[Experiment] Add rigid alias marker by adwinwhite · Pull Request #156742 · rust-lang/rust

adwinwhite · 2026-05-19T09:48:47Z

View all comments

still WIP but push before leaving the computer.

r? lcnr

adwinwhite · 2026-05-19T09:52:11Z

Unfinished. Let's have a look at the perf impact nonetheless.

@bors try @rust-timer queue

[Experiment] Add rigid alias marker

rust-bors · 2026-05-19T11:47:51Z

💔 Test for 73eccb5 failed: CI. Failed job:

try - dist-x86_64-linux-quick (web logs, enhanced plaintext logs)

adwinwhite · 2026-05-20T03:06:55Z

@bors try @rust-timer queue

[Experiment] Add rigid alias marker

rust-bors · 2026-05-20T05:15:45Z

☀️ Try build successful (CI)
Build commit: 42e2939 (42e2939c892f3c5e872d5751bb653ed74736a040, parent: 4b9792692fbb675174d4d2082e7c37b2bc930e71)

rust-timer · 2026-05-20T05:57:06Z

Finished benchmarking commit (42e2939): comparison URL.

Overall result: ❌ regressions - please read:

Benchmarking means the PR may be perf-sensitive. It's automatically marked not fit for rolling up. Overriding is possible but disadvised: it risks changing compiler perf.

Next, please: If you can, justify the regressions found in this try perf run in writing along with @rustbot label: +perf-regression-triaged. If not, fix the regressions and do another perf run. Neutral or positive results will clear the label automatically.

@bors rollup=never
@rustbot label: -S-waiting-on-perf +perf-regression

Instruction count

Our most reliable metric. Used to determine the overall result above. However, even this metric can be noisy.

	mean	range	count
Regressions ❌ (primary)	0.8%	[0.2%, 2.2%]	15
Regressions ❌ (secondary)	11.3%	[0.1%, 95.1%]	29
Improvements ✅ (primary)	-	-	0
Improvements ✅ (secondary)	-0.1%	[-0.1%, -0.1%]	2
All ❌✅ (primary)	0.8%	[0.2%, 2.2%]	15

Max RSS (memory usage)

Results (primary 1.6%, secondary -1.7%)

A less reliable metric. May be of interest, but not used to determine the overall result above.

	mean	range	count
Regressions ❌ (primary)	2.1%	[1.7%, 2.7%]	7
Regressions ❌ (secondary)	2.4%	[0.8%, 3.6%]	6
Improvements ✅ (primary)	-2.4%	[-2.4%, -2.4%]	1
Improvements ✅ (secondary)	-4.1%	[-13.8%, -1.1%]	10
All ❌✅ (primary)	1.6%	[-2.4%, 2.7%]	8

Cycles

Results (primary 2.5%, secondary 17.8%)

A less reliable metric. May be of interest, but not used to determine the overall result above.

	mean	range	count
Regressions ❌ (primary)	2.5%	[2.4%, 2.6%]	2
Regressions ❌ (secondary)	19.3%	[3.5%, 91.9%]	15
Improvements ✅ (primary)	-	-	0
Improvements ✅ (secondary)	-4.7%	[-4.7%, -4.7%]	1
All ❌✅ (primary)	2.5%	[2.4%, 2.6%]	2

Binary size

Results (primary 0.0%, secondary 0.1%)

A less reliable metric. May be of interest, but not used to determine the overall result above.

	mean	range	count
Regressions ❌ (primary)	0.0%	[0.0%, 0.0%]	28
Regressions ❌ (secondary)	0.1%	[0.0%, 0.4%]	27
Improvements ✅ (primary)	-	-	0
Improvements ✅ (secondary)	-	-	0
All ❌✅ (primary)	0.0%	[0.0%, 0.0%]	28

Bootstrap: 510.83s -> 514.725s (0.76%)
Artifact size: 400.58 MiB -> 401.07 MiB (0.12%)

adwinwhite · 2026-05-20T07:42:00Z

@bors try @rust-timer queue

[Experiment] Add rigid alias marker

rust-bors · 2026-05-20T09:52:52Z

☀️ Try build successful (CI)
Build commit: 16cfcfc (16cfcfc63bb62f2884d28afd783504611598f765, parent: 1f8e04d34ab0c1fd9574840aa6db670e41593bfb)

rust-timer · 2026-05-20T10:33:36Z

Finished benchmarking commit (16cfcfc): comparison URL.

Overall result: ❌✅ regressions and improvements - please read:

Benchmarking means the PR may be perf-sensitive. It's automatically marked not fit for rolling up. Overriding is possible but disadvised: it risks changing compiler perf.

Next, please: If you can, justify the regressions found in this try perf run in writing along with @rustbot label: +perf-regression-triaged. If not, fix the regressions and do another perf run. Neutral or positive results will clear the label automatically.

@bors rollup=never
@rustbot label: -S-waiting-on-perf +perf-regression

Instruction count

Our most reliable metric. Used to determine the overall result above. However, even this metric can be noisy.

	mean	range	count
Regressions ❌ (primary)	0.9%	[0.2%, 2.2%]	12
Regressions ❌ (secondary)	11.6%	[0.1%, 93.6%]	23
Improvements ✅ (primary)	-0.3%	[-0.3%, -0.3%]	1
Improvements ✅ (secondary)	-1.8%	[-3.3%, -0.7%]	5
All ❌✅ (primary)	0.8%	[-0.3%, 2.2%]	13

Max RSS (memory usage)

Results (primary 1.5%, secondary -1.2%)

A less reliable metric. May be of interest, but not used to determine the overall result above.

	mean	range	count
Regressions ❌ (primary)	2.4%	[2.0%, 2.9%]	6
Regressions ❌ (secondary)	3.2%	[1.1%, 5.8%]	6
Improvements ✅ (primary)	-3.9%	[-3.9%, -3.9%]	1
Improvements ✅ (secondary)	-4.6%	[-16.0%, -1.1%]	8
All ❌✅ (primary)	1.5%	[-3.9%, 2.9%]	7

Cycles

Results (primary 2.8%, secondary 17.4%)

A less reliable metric. May be of interest, but not used to determine the overall result above.

	mean	range	count
Regressions ❌ (primary)	2.8%	[2.2%, 3.8%]	5
Regressions ❌ (secondary)	23.6%	[3.1%, 89.3%]	10
Improvements ✅ (primary)	-	-	0
Improvements ✅ (secondary)	-3.0%	[-3.3%, -2.8%]	3
All ❌✅ (primary)	2.8%	[2.2%, 3.8%]	5

Binary size

Results (primary 0.0%, secondary 0.1%)

A less reliable metric. May be of interest, but not used to determine the overall result above.

	mean	range	count
Regressions ❌ (primary)	0.0%	[0.0%, 0.0%]	39
Regressions ❌ (secondary)	0.1%	[0.0%, 0.4%]	28
Improvements ✅ (primary)	-	-	0
Improvements ✅ (secondary)	-	-	0
All ❌✅ (primary)	0.0%	[0.0%, 0.0%]	39

Bootstrap: 509.888s -> 513.022s (0.61%)
Artifact size: 400.62 MiB -> 401.10 MiB (0.12%)

adwinwhite · 2026-05-21T07:59:36Z

Local result shows a big perf win on deeply-nested-multi-new-solver, compared to master branch. Let's see other benchmarks.

@bors try @rust-timer queue

rust-timer · 2026-05-21T07:59:39Z

Awaiting bors try build completion.

@rustbot label: +S-waiting-on-perf

[Experiment] Add rigid alias marker

rust-bors · 2026-05-21T08:31:51Z

💔 Test for f1074b1 failed: CI. Failed job:

try - dist-x86_64-linux-quick (web logs, enhanced plaintext logs)

rust-log-analyzer · 2026-05-21T08:32:10Z

The job dist-x86_64-linux-quick failed! Check out the build log: (web) (plain enhanced) (plain)

Click to see the possible cause of the failure (guessed by this bot)

c1e54eec4b57: Pull complete
Digest: sha256:b733d4a32c4da6a00a84df2ca32791bb03df95400243648d8c539e7b4cce329c
Status: Downloaded newer image for ghcr.io/rust-lang/alpine:3.4
6f457ca74096b926d7598e9244985cf093dfa5b3e4ff01bab04097f7899e2557
[CI_JOB_NAME=dist-x86_64-linux-quick]
debug: `DISABLE_CI_RUSTC_IF_INCOMPATIBLE` configured.
---
    Finished `dev` profile [unoptimized + debuginfo] target(s) in 31.77s
##[endgroup]
[2026-05-21T08:10:32.556Z INFO  opt_dist::timer] Section `Stage 1 (Rustc PGO)` starts
[2026-05-21T08:10:32.556Z INFO  opt_dist::timer] Section `Stage 1 (Rustc PGO) > Build PGO instrumented rustc and LLVM` starts
[2026-05-21T08:10:32.556Z INFO  opt_dist::exec] Executing `RUST_BACKTRACE=full python3 /checkout/x.py build --target x86_64-unknown-linux-gnu --host x86_64-unknown-linux-gnu --stage 2 library/std --set rust.llvm-bitcode-linker=false --set build.extended=false --set rust.codegen-backends=['llvm'] --set rust.deny-warnings=false --rust-profile-generate /tmp/tmp-multistage/opt-artifacts/rustc-pgo --set llvm.thin-lto=false --set llvm.link-shared=true [at /checkout/obj]`
##[group]Building bootstrap
    Finished `dev` profile [unoptimized] target(s) in 0.06s
##[endgroup]
[TIMING:start] compile::Assemble { target_compiler: Compiler { stage: 2, host: x86_64-unknown-linux-gnu, forced_compiler: false } }
[TIMING:start] builder::Libdir { compiler: Compiler { stage: 2, host: x86_64-unknown-linux-gnu, forced_compiler: false }, target: x86_64-unknown-linux-gnu }
---
Finished benchmark bitmaps-3.2.1 (1/9)
Executing benchmark cargo-0.87.1 (2/9)
Preparing cargo-0.87.1
Finished benchmark cargo-0.87.1 (2/9)
collector error: Failed to profile 'cargo-0.87.1' with Eprintln, recorded: expected success, got exit status: 101

stderr=    Blocking waiting for file lock on package cache
    Blocking waiting for file lock on package cache
   Compiling proc-macro2 v1.0.93
   Compiling unicode-ident v1.0.16
---
    Checking clru v0.6.2
    Checking overload v0.1.1
    Checking gix-utils v0.1.14
    Checking globset v0.4.15
error[E0277]: the trait bound `<C as CurveArithmetic>::Scalar: ReduceNonZero<<C as Curve>::Uint>` is not satisfied
##[error]   --> /cargo/registry/src/index.crates.io-1949cf8c6b5b557f/elliptic-curve-0.13.8/src/scalar/nonzero.rs:258:22
    |
258 |         let scalar = Scalar::<C>::reduce_nonzero_bytes(bytes);
    |                      ^^^^^^^^^^^ the trait `ReduceNonZero<<C as Curve>::Uint>` is not implemented for `<C as CurveArithmetic>::Scalar`
    |
help: consider further restricting the associated type
    |
257 |     fn reduce_bytes(bytes: &Self::Bytes) -> Self where <C as CurveArithmetic>::Scalar: ReduceNonZero<<C as Curve>::Uint> {
    |                                                  +++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++

    Checking clap_builder v4.5.27
error[E0308]: mismatched types
##[error]   --> /cargo/registry/src/index.crates.io-1949cf8c6b5b557f/elliptic-curve-0.13.8/src/scalar/nonzero.rs:258:56
    |
258 |         let scalar = Scalar::<C>::reduce_nonzero_bytes(bytes);
    |                      --------------------------------- ^^^^^ expected `&GenericArray<u8, ...>`, found `&<... as Reduce<...>>::Bytes`
    |                      |
    |                      arguments to this function are incorrect
    |
    = note: expected reference `&GenericArray<u8, <C as Curve>::FieldBytesSize>`
               found reference `&<<C as CurveArithmetic>::Scalar as Reduce<I>>::Bytes`
    = help: consider constraining the associated type `<<C as CurveArithmetic>::Scalar as Reduce<I>>::Bytes` to `GenericArray<u8, <C as Curve>::FieldBytesSize>`
    = note: for more information, visit https://doc.rust-lang.org/book/ch19-03-advanced-traits.html
note: associated function defined here
   --> /cargo/registry/src/index.crates.io-1949cf8c6b5b557f/elliptic-curve-0.13.8/src/ops.rs:228:8
    |
228 |     fn reduce_nonzero_bytes(bytes: &Self::Bytes) -> Self;
---
             at /cargo/registry/src/index.crates.io-1949cf8c6b5b557f/anyhow-1.0.86/src/backtrace.rs:27:14
   1: collector::check_command_output
             at ./collector/src/lib.rs:237:13
   2: collector::async_command_output::{closure#0}
             at ./collector/src/lib.rs:264:5
   3: <collector::compile::execute::CargoProcess>::run_rustc::{closure#0}
             at ./collector/src/compile/execute/mod.rs:451:52
   4: <collector::compile::benchmark::Benchmark>::measure::{closure#0}::{closure#3}::{closure#0}::{closure#0}
             at ./collector/src/compile/benchmark/mod.rs:388:26
   5: <core::pin::Pin<&mut <collector::compile::benchmark::Benchmark>::measure::{closure#0}::{closure#3}::{closure#0}::{closure#0}> as core::future::future::Future>::poll
             at /rustc/ef0fb8a2563200e322fa4419f09f65a63742038c/library/core/src/future/future.rs:133:9
   6: <tokio::runtime::scheduler::current_thread::CoreGuard>::block_on::<core::pin::Pin<&mut <collector::compile::benchmark::Benchmark>::measure::{closure#0}::{closure#3}::{closure#0}::{closure#0}>>::{closure#0}::{closure#0}::{closure#0}
             at /cargo/registry/src/index.crates.io-1949cf8c6b5b557f/tokio-1.45.1/src/runtime/scheduler/current_thread/mod.rs:733:70
   7: tokio::task::coop::with_budget::<core::task::poll::Poll<core::result::Result<(), anyhow::Error>>, <tokio::runtime::scheduler::current_thread::CoreGuard>::block_on<core::pin::Pin<&mut <collector::compile::benchmark::Benchmark>::measure::{closure#0}::{closure#3}::{closure#0}::{closure#0}>>::{closure#0}::{closure#0}::{closure#0}>
             at /cargo/registry/src/index.crates.io-1949cf8c6b5b557f/tokio-1.45.1/src/task/coop/mod.rs:167:5
   8: tokio::task::coop::budget::<core::task::poll::Poll<core::result::Result<(), anyhow::Error>>, <tokio::runtime::scheduler::current_thread::CoreGuard>::block_on<core::pin::Pin<&mut <collector::compile::benchmark::Benchmark>::measure::{closure#0}::{closure#3}::{closure#0}::{closure#0}>>::{closure#0}::{closure#0}::{closure#0}>
             at /cargo/registry/src/index.crates.io-1949cf8c6b5b557f/tokio-1.45.1/src/task/coop/mod.rs:133:5
   9: <tokio::runtime::scheduler::current_thread::CoreGuard>::block_on::<core::pin::Pin<&mut <collector::compile::benchmark::Benchmark>::measure::{closure#0}::{closure#3}::{closure#0}::{closure#0}>>::{closure#0}::{closure#0}
             at /cargo/registry/src/index.crates.io-1949cf8c6b5b557f/tokio-1.45.1/src/runtime/scheduler/current_thread/mod.rs:733:25
  10: <tokio::runtime::scheduler::current_thread::Context>::enter::<core::task::poll::Poll<core::result::Result<(), anyhow::Error>>, <tokio::runtime::scheduler::current_thread::CoreGuard>::block_on<core::pin::Pin<&mut <collector::compile::benchmark::Benchmark>::measure::{closure#0}::{closure#3}::{closure#0}::{closure#0}>>::{closure#0}::{closure#0}>
             at /cargo/registry/src/index.crates.io-1949cf8c6b5b557f/tokio-1.45.1/src/runtime/scheduler/current_thread/mod.rs:432:19
  11: <tokio::runtime::scheduler::current_thread::CoreGuard>::block_on::<core::pin::Pin<&mut <collector::compile::benchmark::Benchmark>::measure::{closure#0}::{closure#3}::{closure#0}::{closure#0}>>::{closure#0}
             at /cargo/registry/src/index.crates.io-1949cf8c6b5b557f/tokio-1.45.1/src/runtime/scheduler/current_thread/mod.rs:732:44
  12: <tokio::runtime::scheduler::current_thread::CoreGuard>::enter::<<tokio::runtime::scheduler::current_thread::CoreGuard>::block_on<core::pin::Pin<&mut <collector::compile::benchmark::Benchmark>::measure::{closure#0}::{closure#3}::{closure#0}::{closure#0}>>::{closure#0}, core::option::Option<core::result::Result<(), anyhow::Error>>>::{closure#0}
             at /cargo/registry/src/index.crates.io-1949cf8c6b5b557f/tokio-1.45.1/src/runtime/scheduler/current_thread/mod.rs:820:68
  13: <tokio::runtime::context::scoped::Scoped<tokio::runtime::scheduler::Context>>::set::<<tokio::runtime::scheduler::current_thread::CoreGuard>::enter<<tokio::runtime::scheduler::current_thread::CoreGuard>::block_on<core::pin::Pin<&mut <collector::compile::benchmark::Benchmark>::measure::{closure#0}::{closure#3}::{closure#0}::{closure#0}>>::{closure#0}, core::option::Option<core::result::Result<(), anyhow::Error>>>::{closure#0}, (alloc::boxed::Box<tokio::runtime::scheduler::current_thread::Core>, core::option::Option<core::result::Result<(), anyhow::Error>>)>
             at /cargo/registry/src/index.crates.io-1949cf8c6b5b557f/tokio-1.45.1/src/runtime/context/scoped.rs:40:9
  14: tokio::runtime::context::set_scheduler::<(alloc::boxed::Box<tokio::runtime::scheduler::current_thread::Core>, core::option::Option<core::result::Result<(), anyhow::Error>>), <tokio::runtime::scheduler::current_thread::CoreGuard>::enter<<tokio::runtime::scheduler::current_thread::CoreGuard>::block_on<core::pin::Pin<&mut <collector::compile::benchmark::Benchmark>::measure::{closure#0}::{closure#3}::{closure#0}::{closure#0}>>::{closure#0}, core::option::Option<core::result::Result<(), anyhow::Error>>>::{closure#0}>::{closure#0}
             at /cargo/registry/src/index.crates.io-1949cf8c6b5b557f/tokio-1.45.1/src/runtime/context.rs:176:38
  15: <std::thread::local::LocalKey<tokio::runtime::context::Context>>::try_with::<tokio::runtime::context::set_scheduler<(alloc::boxed::Box<tokio::runtime::scheduler::current_thread::Core>, core::option::Option<core::result::Result<(), anyhow::Error>>), <tokio::runtime::scheduler::current_thread::CoreGuard>::enter<<tokio::runtime::scheduler::current_thread::CoreGuard>::block_on<core::pin::Pin<&mut <collector::compile::benchmark::Benchmark>::measure::{closure#0}::{closure#3}::{closure#0}::{closure#0}>>::{closure#0}, core::option::Option<core::result::Result<(), anyhow::Error>>>::{closure#0}>::{closure#0}, (alloc::boxed::Box<tokio::runtime::scheduler::current_thread::Core>, core::option::Option<core::result::Result<(), anyhow::Error>>)>
             at /rustc/ef0fb8a2563200e322fa4419f09f65a63742038c/library/std/src/thread/local.rs:462:12
  16: <std::thread::local::LocalKey<tokio::runtime::context::Context>>::with::<tokio::runtime::context::set_scheduler<(alloc::boxed::Box<tokio::runtime::scheduler::current_thread::Core>, core::option::Option<core::result::Result<(), anyhow::Error>>), <tokio::runtime::scheduler::current_thread::CoreGuard>::enter<<tokio::runtime::scheduler::current_thread::CoreGuard>::block_on<core::pin::Pin<&mut <collector::compile::benchmark::Benchmark>::measure::{closure#0}::{closure#3}::{closure#0}::{closure#0}>>::{closure#0}, core::option::Option<core::result::Result<(), anyhow::Error>>>::{closure#0}>::{closure#0}, (alloc::boxed::Box<tokio::runtime::scheduler::current_thread::Core>, core::option::Option<core::result::Result<(), anyhow::Error>>)>
             at /rustc/ef0fb8a2563200e322fa4419f09f65a63742038c/library/std/src/thread/local.rs:426:20
  17: tokio::runtime::context::set_scheduler::<(alloc::boxed::Box<tokio::runtime::scheduler::current_thread::Core>, core::option::Option<core::result::Result<(), anyhow::Error>>), <tokio::runtime::scheduler::current_thread::CoreGuard>::enter<<tokio::runtime::scheduler::current_thread::CoreGuard>::block_on<core::pin::Pin<&mut <collector::compile::benchmark::Benchmark>::measure::{closure#0}::{closure#3}::{closure#0}::{closure#0}>>::{closure#0}, core::option::Option<core::result::Result<(), anyhow::Error>>>::{closure#0}>
             at /cargo/registry/src/index.crates.io-1949cf8c6b5b557f/tokio-1.45.1/src/runtime/context.rs:176:17
  18: <tokio::runtime::scheduler::current_thread::CoreGuard>::enter::<<tokio::runtime::scheduler::current_thread::CoreGuard>::block_on<core::pin::Pin<&mut <collector::compile::benchmark::Benchmark>::measure::{closure#0}::{closure#3}::{closure#0}::{closure#0}>>::{closure#0}, core::option::Option<core::result::Result<(), anyhow::Error>>>
             at /cargo/registry/src/index.crates.io-1949cf8c6b5b557f/tokio-1.45.1/src/runtime/scheduler/current_thread/mod.rs:820:27
  19: <tokio::runtime::scheduler::current_thread::CoreGuard>::block_on::<core::pin::Pin<&mut <collector::compile::benchmark::Benchmark>::measure::{closure#0}::{closure#3}::{closure#0}::{closure#0}>>
             at /cargo/registry/src/index.crates.io-1949cf8c6b5b557f/tokio-1.45.1/src/runtime/scheduler/current_thread/mod.rs:720:24
  20: <tokio::runtime::scheduler::current_thread::CurrentThread>::block_on::<<collector::compile::benchmark::Benchmark>::measure::{closure#0}::{closure#3}::{closure#0}::{closure#0}>::{closure#0}
             at /cargo/registry/src/index.crates.io-1949cf8c6b5b557f/tokio-1.45.1/src/runtime/scheduler/current_thread/mod.rs:200:33
  21: tokio::runtime::context::runtime::enter_runtime::<<tokio::runtime::scheduler::current_thread::CurrentThread>::block_on<<collector::compile::benchmark::Benchmark>::measure::{closure#0}::{closure#3}::{closure#0}::{closure#0}>::{closure#0}, core::result::Result<(), anyhow::Error>>
             at /cargo/registry/src/index.crates.io-1949cf8c6b5b557f/tokio-1.45.1/src/runtime/context/runtime.rs:65:16
  22: <tokio::runtime::scheduler::current_thread::CurrentThread>::block_on::<<collector::compile::benchmark::Benchmark>::measure::{closure#0}::{closure#3}::{closure#0}::{closure#0}>
             at /cargo/registry/src/index.crates.io-1949cf8c6b5b557f/tokio-1.45.1/src/runtime/scheduler/current_thread/mod.rs:188:9
  23: <tokio::runtime::runtime::Runtime>::block_on_inner::<<collector::compile::benchmark::Benchmark>::measure::{closure#0}::{closure#3}::{closure#0}::{closure#0}>
             at /cargo/registry/src/index.crates.io-1949cf8c6b5b557f/tokio-1.45.1/src/runtime/runtime.rs:356:52
  24: <tokio::runtime::runtime::Runtime>::block_on::<<collector::compile::benchmark::Benchmark>::measure::{closure#0}::{closure#3}::{closure#0}::{closure#0}>
             at /cargo/registry/src/index.crates.io-1949cf8c6b5b557f/tokio-1.45.1/src/runtime/runtime.rs:330:18
  25: collector::utils::wait_for_future::<<collector::compile::benchmark::Benchmark>::measure::{closure#0}::{closure#3}::{closure#0}::{closure#0}, core::result::Result<(), anyhow::Error>>
             at ./collector/src/utils/mod.rs:16:10
  26: <collector::compile::benchmark::Benchmark>::measure::{closure#0}::{closure#3}::{closure#0}
             at ./collector/src/compile/benchmark/mod.rs:377:21
  27: std::sys::backtrace::__rust_begin_short_backtrace::<<collector::compile::benchmark::Benchmark>::measure::{closure#0}::{closure#3}::{closure#0}, core::result::Result<(), anyhow::Error>>
             at /rustc/ef0fb8a2563200e322fa4419f09f65a63742038c/library/std/src/sys/backtrace.rs:166:18
  28: std::thread::lifecycle::spawn_unchecked::<<collector::compile::benchmark::Benchmark>::measure::{closure#0}::{closure#3}::{closure#0}, core::result::Result<(), anyhow::Error>>::{closure#1}::{closure#0}
             at /rustc/ef0fb8a2563200e322fa4419f09f65a63742038c/library/std/src/thread/lifecycle.rs:91:13
  29: <core::panic::unwind_safe::AssertUnwindSafe<std::thread::lifecycle::spawn_unchecked<<collector::compile::benchmark::Benchmark>::measure::{closure#0}::{closure#3}::{closure#0}, core::result::Result<(), anyhow::Error>>::{closure#1}::{closure#0}> as core::ops::function::FnOnce<()>>::call_once
             at /rustc/ef0fb8a2563200e322fa4419f09f65a63742038c/library/core/src/panic/unwind_safe.rs:275:9
  30: std::panicking::catch_unwind::do_call::<core::panic::unwind_safe::AssertUnwindSafe<std::thread::lifecycle::spawn_unchecked<<collector::compile::benchmark::Benchmark>::measure::{closure#0}::{closure#3}::{closure#0}, core::result::Result<(), anyhow::Error>>::{closure#1}::{closure#0}>, core::result::Result<(), anyhow::Error>>
             at /rustc/ef0fb8a2563200e322fa4419f09f65a63742038c/library/std/src/panicking.rs:581:40
  31: __rust_try
  32: std::panicking::catch_unwind::<core::result::Result<(), anyhow::Error>, core::panic::unwind_safe::AssertUnwindSafe<std::thread::lifecycle::spawn_unchecked<<collector::compile::benchmark::Benchmark>::measure::{closure#0}::{closure#3}::{closure#0}, core::result::Result<(), anyhow::Error>>::{closure#1}::{closure#0}>>
             at /rustc/ef0fb8a2563200e322fa4419f09f65a63742038c/library/std/src/panicking.rs:544:19
  33: std::panic::catch_unwind::<core::panic::unwind_safe::AssertUnwindSafe<std::thread::lifecycle::spawn_unchecked<<collector::compile::benchmark::Benchmark>::measure::{closure#0}::{closure#3}::{closure#0}, core::result::Result<(), anyhow::Error>>::{closure#1}::{closure#0}>, core::result::Result<(), anyhow::Error>>
             at /rustc/ef0fb8a2563200e322fa4419f09f65a63742038c/library/std/src/panic.rs:359:14
  34: std::thread::lifecycle::spawn_unchecked::<<collector::compile::benchmark::Benchmark>::measure::{closure#0}::{closure#3}::{closure#0}, core::result::Result<(), anyhow::Error>>::{closure#1}
             at /rustc/ef0fb8a2563200e322fa4419f09f65a63742038c/library/std/src/thread/lifecycle.rs:89:26
  35: <std::thread::lifecycle::spawn_unchecked<<collector::compile::benchmark::Benchmark>::measure::{closure#0}::{closure#3}::{closure#0}, core::result::Result<(), anyhow::Error>>::{closure#1} as core::ops::function::FnOnce<()>>::call_once::{shim:vtable#0}
             at /rustc/ef0fb8a2563200e322fa4419f09f65a63742038c/library/core/src/ops/function.rs:250:5
  36: <alloc::boxed::Box<dyn core::ops::function::FnOnce<(), Output = ()> + core::marker::Send> as core::ops::function::FnOnce<()>>::call_once
             at /rustc/ef0fb8a2563200e322fa4419f09f65a63742038c/library/alloc/src/boxed.rs:2249:9
  37: <std::sys::thread::unix::Thread>::new::thread_start
             at /rustc/ef0fb8a2563200e322fa4419f09f65a63742038c/library/std/src/sys/thread/unix.rs:118:17
---
   5: std::sys::backtrace::__rust_begin_short_backtrace::<fn(), ()>
             at /rustc/ef0fb8a2563200e322fa4419f09f65a63742038c/library/std/src/sys/backtrace.rs:166:18
   6: std::rt::lang_start::<()>::{closure#0}
             at /rustc/ef0fb8a2563200e322fa4419f09f65a63742038c/library/std/src/rt.rs:206:18
   7: <&dyn core::ops::function::Fn<(), Output = i32> + core::marker::Sync + core::panic::unwind_safe::RefUnwindSafe as core::ops::function::FnOnce<()>>::call_once
             at /rustc/ef0fb8a2563200e322fa4419f09f65a63742038c/library/core/src/ops/function.rs:287:21
   8: std::panicking::catch_unwind::do_call::<&dyn core::ops::function::Fn<(), Output = i32> + core::marker::Sync + core::panic::unwind_safe::RefUnwindSafe, i32>
             at /rustc/ef0fb8a2563200e322fa4419f09f65a63742038c/library/std/src/panicking.rs:581:40
   9: std::panicking::catch_unwind::<i32, &dyn core::ops::function::Fn<(), Output = i32> + core::marker::Sync + core::panic::unwind_safe::RefUnwindSafe>
             at /rustc/ef0fb8a2563200e322fa4419f09f65a63742038c/library/std/src/panicking.rs:544:19
  10: std::panic::catch_unwind::<&dyn core::ops::function::Fn<(), Output = i32> + core::marker::Sync + core::panic::unwind_safe::RefUnwindSafe, i32>
             at /rustc/ef0fb8a2563200e322fa4419f09f65a63742038c/library/std/src/panic.rs:359:14
  11: std::rt::lang_start_internal::{closure#0}
             at /rustc/ef0fb8a2563200e322fa4419f09f65a63742038c/library/std/src/rt.rs:175:24
  12: std::panicking::catch_unwind::do_call::<std::rt::lang_start_internal::{closure#0}, isize>
             at /rustc/ef0fb8a2563200e322fa4419f09f65a63742038c/library/std/src/panicking.rs:581:40
---

Stack backtrace:
   0: <anyhow::Error>::msg::<alloc::string::String>
             at /rust/deps/anyhow-1.0.100/src/backtrace.rs:27:14
   1: <opt_dist::exec::CmdBuilder>::run
             at /rustc/f1074b1e3ba0dd39b3af573031d625b55043a85b/src/tools/opt-dist/src/exec.rs:80:17
   2: opt_dist::training::gather_rustc_profiles::{closure#0}
             at /rustc/f1074b1e3ba0dd39b3af573031d625b55043a85b/src/tools/opt-dist/src/training.rs:158:14
   3: opt_dist::utils::with_log_group::<opt_dist::training::gather_rustc_profiles::{closure#0}, core::result::Result<(), anyhow::Error>>
             at /rustc/f1074b1e3ba0dd39b3af573031d625b55043a85b/src/tools/opt-dist/src/utils/mod.rs:68:22
   4: opt_dist::training::gather_rustc_profiles
             at /rustc/f1074b1e3ba0dd39b3af573031d625b55043a85b/src/tools/opt-dist/src/training.rs:155:5
   5: opt_dist::execute_pipeline::{closure#1}::{closure#1}
             at /rustc/f1074b1e3ba0dd39b3af573031d625b55043a85b/src/tools/opt-dist/src/main.rs:260:45
   6: <opt_dist::timer::TimerSection>::section::<opt_dist::execute_pipeline::{closure#1}::{closure#1}, opt_dist::training::RustcPGOProfile>
             at /rustc/f1074b1e3ba0dd39b3af573031d625b55043a85b/src/tools/opt-dist/src/timer.rs:111:22
   7: opt_dist::execute_pipeline::{closure#1}
             at /rustc/f1074b1e3ba0dd39b3af573031d625b55043a85b/src/tools/opt-dist/src/main.rs:260:14
   8: <opt_dist::timer::TimerSection>::section::<opt_dist::execute_pipeline::{closure#1}, opt_dist::training::RustcPGOProfile>
             at /rustc/f1074b1e3ba0dd39b3af573031d625b55043a85b/src/tools/opt-dist/src/timer.rs:111:22
   9: opt_dist::execute_pipeline
             at /rustc/f1074b1e3ba0dd39b3af573031d625b55043a85b/src/tools/opt-dist/src/main.rs:242:35
  10: opt_dist::main
             at /rustc/f1074b1e3ba0dd39b3af573031d625b55043a85b/src/tools/opt-dist/src/main.rs:469:18
  11: <fn() -> core::result::Result<(), anyhow::Error> as core::ops::function::FnOnce<()>>::call_once
             at /rustc/ef0fb8a2563200e322fa4419f09f65a63742038c/library/core/src/ops/function.rs:250:5
  12: std::sys::backtrace::__rust_begin_short_backtrace::<fn() -> core::result::Result<(), anyhow::Error>, core::result::Result<(), anyhow::Error>>
             at /rustc/ef0fb8a2563200e322fa4419f09f65a63742038c/library/std/src/sys/backtrace.rs:166:18
  13: std::rt::lang_start::<core::result::Result<(), anyhow::Error>>::{closure#0}
             at /rustc/ef0fb8a2563200e322fa4419f09f65a63742038c/library/std/src/rt.rs:206:18
  14: <&dyn core::ops::function::Fn<(), Output = i32> + core::marker::Sync + core::panic::unwind_safe::RefUnwindSafe as core::ops::function::FnOnce<()>>::call_once
             at /rustc/ef0fb8a2563200e322fa4419f09f65a63742038c/library/core/src/ops/function.rs:287:21
  15: std::panicking::catch_unwind::do_call::<&dyn core::ops::function::Fn<(), Output = i32> + core::marker::Sync + core::panic::unwind_safe::RefUnwindSafe, i32>
             at /rustc/ef0fb8a2563200e322fa4419f09f65a63742038c/library/std/src/panicking.rs:581:40
  16: std::panicking::catch_unwind::<i32, &dyn core::ops::function::Fn<(), Output = i32> + core::marker::Sync + core::panic::unwind_safe::RefUnwindSafe>
             at /rustc/ef0fb8a2563200e322fa4419f09f65a63742038c/library/std/src/panicking.rs:544:19
  17: std::panic::catch_unwind::<&dyn core::ops::function::Fn<(), Output = i32> + core::marker::Sync + core::panic::unwind_safe::RefUnwindSafe, i32>
             at /rustc/ef0fb8a2563200e322fa4419f09f65a63742038c/library/std/src/panic.rs:359:14
  18: std::rt::lang_start_internal::{closure#0}
             at /rustc/ef0fb8a2563200e322fa4419f09f65a63742038c/library/std/src/rt.rs:175:24
  19: std::panicking::catch_unwind::do_call::<std::rt::lang_start_internal::{closure#0}, isize>
             at /rustc/ef0fb8a2563200e322fa4419f09f65a63742038c/library/std/src/panicking.rs:581:40

rust-log-analyzer · 2026-05-21T08:33:25Z

The job aarch64-gnu-llvm-21-1 failed! Check out the build log: (web) (plain enhanced) (plain)

Click to see the possible cause of the failure (guessed by this bot)

- 
- error[E0277]: the trait bound `u32: Foo` is not satisfied
52   --> $DIR/associated-types-path-2.rs:37:8
53    |
54 LL |     f1(2u32, 4i32);

67 LL | pub fn f1<T: Foo>(a: T, x: T::A) {}
68    |              ^^^ required by this bound in `f1`
69 
- error[E0277]: the trait bound `u32: Foo` is not satisfied
-   --> $DIR/associated-types-path-2.rs:37:14
-    |
- LL |     f1(2u32, 4i32);
-    |              ^^^^ the trait `Foo` is not implemented for `u32`
-    |
- help: the trait `Foo` is implemented for `i32`
-   --> $DIR/associated-types-path-2.rs:11:1
-    |
- LL | impl Foo for i32 {
-    | ^^^^^^^^^^^^^^^^
- 
82 error[E0308]: mismatched types
83   --> $DIR/associated-types-path-2.rs:43:18
84    |

92 LL |     let _: i32 = f2(2i32).try_into().unwrap();
93    |                          ++++++++++++++++++++
94 
- error: aborting due to 6 previous errors
+ error: aborting due to 4 previous errors
96 
---
To only update this specific test, also pass `--test-args associated-types/associated-types-path-2.rs`

error: 1 errors occurred comparing output.
status: exit status: 1
command: env -u RUSTC_LOG_COLOR RUSTC_ICE="0" RUST_BACKTRACE="short" "/checkout/obj/build/aarch64-unknown-linux-gnu/stage2/bin/rustc" "/checkout/tests/ui/associated-types/associated-types-path-2.rs" "-Zthreads=1" "-Zsimulate-remapped-rust-src-base=/rustc/FAKE_PREFIX" "-Ztranslate-remapped-path-to-local-path=no" "-Z" "ignore-directory-in-diagnostics-source-blocks=/cargo" "-Z" "ignore-directory-in-diagnostics-source-blocks=/checkout/vendor" "--sysroot" "/checkout/obj/build/aarch64-unknown-linux-gnu/stage2" "--target=aarch64-unknown-linux-gnu" "--check-cfg" "cfg(test,FALSE)" "--error-format" "json" "--json" "future-incompat" "-Ccodegen-units=1" "-Zui-testing" "-Zdeduplicate-diagnostics=no" "-Zwrite-long-types-to-disk=no" "-Cstrip=debuginfo" "--emit" "metadata" "-C" "prefer-dynamic" "--out-dir" "/checkout/obj/build/aarch64-unknown-linux-gnu/test/ui/associated-types/associated-types-path-2" "-A" "unused" "-W" "unused_attributes" "-A" "internal_features" "-A" "incomplete_features" "-A" "unused_parens" "-A" "unused_braces" "-Crpath" "-Cdebuginfo=0" "-Lnative=/checkout/obj/build/aarch64-unknown-linux-gnu/native/rust-test-helpers"
stdout: none
--- stderr -------------------------------
error[E0308]: mismatched types
##[error]  --> /checkout/tests/ui/associated-types/associated-types-path-2.rs:21:14
   |
---
   |
note: function defined here
  --> /checkout/tests/ui/associated-types/associated-types-path-2.rs:15:8
   |
LL | pub fn f1<T: Foo>(a: T, x: T::A) {}
   |        ^^               -------
help: change the type of the numeric literal from `i32` to `u32`
   |
LL -     f1(2i32, 4i32);
LL +     f1(2i32, 4u32);
---
   | ^^^^^^^^^^^^^^^^
note: required by a bound in `f1`
  --> /checkout/tests/ui/associated-types/associated-types-path-2.rs:15:14
   |
LL | pub fn f1<T: Foo>(a: T, x: T::A) {}
   |              ^^^ required by this bound in `f1`

error[E0277]: the trait bound `u32: Foo` is not satisfied
##[error]  --> /checkout/tests/ui/associated-types/associated-types-path-2.rs:37:8
   |
LL |     f1(2u32, 4i32);
   |     -- ^^^^ the trait `Foo` is not implemented for `u32`
   |     |
   |     required by a bound introduced by this call
   |
help: the trait `Foo` is implemented for `i32`
  --> /checkout/tests/ui/associated-types/associated-types-path-2.rs:11:1
   |
LL | impl Foo for i32 {
   | ^^^^^^^^^^^^^^^^
note: required by a bound in `f1`
  --> /checkout/tests/ui/associated-types/associated-types-path-2.rs:15:14
   |
LL | pub fn f1<T: Foo>(a: T, x: T::A) {}
   |              ^^^ required by this bound in `f1`

error[E0308]: mismatched types
##[error]  --> /checkout/tests/ui/associated-types/associated-types-path-2.rs:43:18
   |
LL |     let _: i32 = f2(2i32);
   |            ---   ^^^^^^^^ expected `i32`, found `u32`
   |            |
   |            expected due to this
   |
help: you can convert a `u32` to an `i32` and panic if the converted value doesn't fit
   |
LL |     let _: i32 = f2(2i32).try_into().unwrap();
   |                          ++++++++++++++++++++

error: aborting due to 4 previous errors

Some errors have detailed explanations: E0277, E0308.
---
---- [ui] tests/ui/attributes/dump-preds.rs stdout ----
Saved the actual stderr to `/checkout/obj/build/aarch64-unknown-linux-gnu/test/ui/attributes/dump-preds/dump-preds.stderr`
diff of stderr:

33 LL |     type Assoc<P: Eq>: std::ops::Deref<Target = ()>
34    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
35    |
-    = note: Binder { value: ProjectionPredicate(AliasTerm { args: [Alias(AliasTy { args: [Self/#0, T/#1, P/#2], kind: Projection { def_id: DefId(..) }, .. })], kind: ProjectionTy { def_id: DefId(..) }, .. }, Term::Ty(())), bound_vars: [] }
+    = note: Binder { value: ProjectionPredicate(AliasTerm { args: [Alias(AliasTy { args: [Self/#0, T/#1, P/#2], kind: Projection { def_id: DefId(..) }, .. }, No)], kind: ProjectionTy { def_id: DefId(..) }, .. }, Term::Ty(())), bound_vars: [] }
37    = note: Binder { value: TraitPredicate(<<Self as Trait<T>>::Assoc<P> as std::ops::Deref>, polarity:Positive), bound_vars: [] }
38    = note: Binder { value: TraitPredicate(<<Self as Trait<T>>::Assoc<P> as std::marker::Sized>, polarity:Positive), bound_vars: [] }
39 

Note: some mismatched output was normalized before being compared
-    = note: Binder { value: ProjectionPredicate(AliasTerm { args: [Alias(AliasTy { args: [Self/#0, T/#1, P/#2], kind: Projection { def_id: DefId(0:5 ~ dump_preds[a6a3]::Trait::Assoc) }, .. }, No)], kind: ProjectionTy { def_id: DefId(2:4404 ~ core[a493]::ops::deref::Deref::Target) }, .. }, Term::Ty(())), bound_vars: [] }
+    = note: Binder { value: ProjectionPredicate(AliasTerm { args: [Alias(AliasTy { args: [Self/#0, T/#1, P/#2], kind: Projection { def_id: DefId(..) }, .. }, No)], kind: ProjectionTy { def_id: DefId(..) }, .. }, Term::Ty(())), bound_vars: [] }


The actual stderr differed from the expected stderr
To update references, rerun the tests and pass the `--bless` flag
To only update this specific test, also pass `--test-args attributes/dump-preds.rs`

error: 1 errors occurred comparing output.
status: exit status: 1
command: env -u RUSTC_LOG_COLOR RUSTC_ICE="0" RUST_BACKTRACE="short" "/checkout/obj/build/aarch64-unknown-linux-gnu/stage2/bin/rustc" "/checkout/tests/ui/attributes/dump-preds.rs" "-Zthreads=1" "-Zsimulate-remapped-rust-src-base=/rustc/FAKE_PREFIX" "-Ztranslate-remapped-path-to-local-path=no" "-Z" "ignore-directory-in-diagnostics-source-blocks=/cargo" "-Z" "ignore-directory-in-diagnostics-source-blocks=/checkout/vendor" "--sysroot" "/checkout/obj/build/aarch64-unknown-linux-gnu/stage2" "--target=aarch64-unknown-linux-gnu" "--check-cfg" "cfg(test,FALSE)" "--error-format" "json" "--json" "future-incompat" "-Ccodegen-units=1" "-Zui-testing" "-Zdeduplicate-diagnostics=no" "-Zwrite-long-types-to-disk=no" "-Cstrip=debuginfo" "--emit" "metadata" "-C" "prefer-dynamic" "--out-dir" "/checkout/obj/build/aarch64-unknown-linux-gnu/test/ui/attributes/dump-preds" "-A" "unused" "-W" "unused_attributes" "-A" "internal_features" "-A" "incomplete_features" "-A" "unused_parens" "-A" "unused_braces" "-Crpath" "-Cdebuginfo=0" "-Lnative=/checkout/obj/build/aarch64-unknown-linux-gnu/native/rust-test-helpers"
stdout: none
--- stderr -------------------------------
error: rustc_dump_predicates
##[error]  --> /checkout/tests/ui/attributes/dump-preds.rs:6:1
   |
LL | trait Trait<T>: Iterator<Item: Copy>
   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
   |
   = note: Binder { value: TraitPredicate(<Self as std::marker::MetaSized>, polarity:Positive), bound_vars: [] }
   = note: Binder { value: TraitPredicate(<Self as std::iter::Iterator>, polarity:Positive), bound_vars: [] }
   = note: Binder { value: TraitPredicate(<<Self as std::iter::Iterator>::Item as std::marker::Copy>, polarity:Positive), bound_vars: [] }
   = note: Binder { value: TraitPredicate(<T as std::marker::Sized>, polarity:Positive), bound_vars: [] }
   = note: Binder { value: TraitPredicate(<std::string::String as std::convert::From<T>>, polarity:Positive), bound_vars: [] }
   = note: Binder { value: TraitPredicate(<Self as Trait<T>>, polarity:Positive), bound_vars: [] }

error: rustc_dump_predicates
##[error]  --> /checkout/tests/ui/attributes/dump-preds.rs:13:5
   |
LL |     type Assoc<P: Eq>: std::ops::Deref<Target = ()>
   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
   |
   = note: Binder { value: TraitPredicate(<Self as std::marker::MetaSized>, polarity:Positive), bound_vars: [] }
   = note: Binder { value: TraitPredicate(<Self as std::iter::Iterator>, polarity:Positive), bound_vars: [] }
   = note: Binder { value: TraitPredicate(<<Self as std::iter::Iterator>::Item as std::marker::Copy>, polarity:Positive), bound_vars: [] }
   = note: Binder { value: TraitPredicate(<T as std::marker::Sized>, polarity:Positive), bound_vars: [] }
   = note: Binder { value: TraitPredicate(<std::string::String as std::convert::From<T>>, polarity:Positive), bound_vars: [] }
   = note: Binder { value: TraitPredicate(<Self as Trait<T>>, polarity:Positive), bound_vars: [] }
   = note: Binder { value: TraitPredicate(<P as std::marker::Sized>, polarity:Positive), bound_vars: [] }
   = note: Binder { value: TraitPredicate(<P as std::cmp::Eq>, polarity:Positive), bound_vars: [] }
   = note: Binder { value: TraitPredicate(<<Self as Trait<T>>::Assoc<()> as std::marker::Copy>, polarity:Positive), bound_vars: [] }

error: rustc_dump_item_bounds
##[error]  --> /checkout/tests/ui/attributes/dump-preds.rs:13:5
   |
LL |     type Assoc<P: Eq>: std::ops::Deref<Target = ()>
   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
   |
   = note: Binder { value: ProjectionPredicate(AliasTerm { args: [Alias(AliasTy { args: [Self/#0, T/#1, P/#2], kind: Projection { def_id: DefId(0:5 ~ dump_preds[a6a3]::Trait::Assoc) }, .. }, No)], kind: ProjectionTy { def_id: DefId(2:4404 ~ core[a493]::ops::deref::Deref::Target) }, .. }, Term::Ty(())), bound_vars: [] }
   = note: Binder { value: TraitPredicate(<<Self as Trait<T>>::Assoc<P> as std::ops::Deref>, polarity:Positive), bound_vars: [] }
   = note: Binder { value: TraitPredicate(<<Self as Trait<T>>::Assoc<P> as std::marker::Sized>, polarity:Positive), bound_vars: [] }

error: aborting due to 3 previous errors
------------------------------------------

---- [ui] tests/ui/attributes/dump-preds.rs stdout end ----
---- [ui] tests/ui/coercion/issue-101066.rs stdout ----

error: test compilation failed although it shouldn't!
status: exit status: 1
command: env -u RUSTC_LOG_COLOR RUSTC_ICE="0" RUST_BACKTRACE="short" "/checkout/obj/build/aarch64-unknown-linux-gnu/stage2/bin/rustc" "/checkout/tests/ui/coercion/issue-101066.rs" "-Zthreads=1" "-Zsimulate-remapped-rust-src-base=/rustc/FAKE_PREFIX" "-Ztranslate-remapped-path-to-local-path=no" "-Z" "ignore-directory-in-diagnostics-source-blocks=/cargo" "-Z" "ignore-directory-in-diagnostics-source-blocks=/checkout/vendor" "--sysroot" "/checkout/obj/build/aarch64-unknown-linux-gnu/stage2" "--target=aarch64-unknown-linux-gnu" "--check-cfg" "cfg(test,FALSE)" "--error-format" "json" "--json" "future-incompat" "-Ccodegen-units=1" "-Zui-testing" "-Zdeduplicate-diagnostics=no" "-Zwrite-long-types-to-disk=no" "-Cstrip=debuginfo" "--emit" "metadata" "-C" "prefer-dynamic" "--out-dir" "/checkout/obj/build/aarch64-unknown-linux-gnu/test/ui/coercion/issue-101066" "-A" "unused" "-W" "unused_attributes" "-A" "internal_features" "-A" "incomplete_features" "-A" "unused_parens" "-A" "unused_braces" "-Crpath" "-Cdebuginfo=0" "-Lnative=/checkout/obj/build/aarch64-unknown-linux-gnu/native/rust-test-helpers"
stdout: none
--- stderr -------------------------------
error[E0308]: mismatched types
##[error]  --> /checkout/tests/ui/coercion/issue-101066.rs:12:33
   |
LL |     fn valid_integer_try_from<N>(i: N) -> Result<Self::Integer, ()>
   |                               - found this type parameter
...
LL |         Self::Integer::try_from(i).map_err(|_| ())
   |         ----------------------- ^ expected `usize`, found type parameter `N`
   |         |
   |         arguments to this function are incorrect
   |
   = note:        expected type `usize`
           found type parameter `N`
---
------------------------------------------

---- [ui] tests/ui/coercion/issue-101066.rs stdout end ----
---- [ui] tests/ui/coherence/indirect-impl-for-trait-obj-coherence.rs#next stdout ----
Saved the actual stderr to `/checkout/obj/build/aarch64-unknown-linux-gnu/test/ui/coherence/indirect-impl-for-trait-obj-coherence.next/indirect-impl-for-trait-obj-coherence.next.stderr`
diff of stderr:

1 error[E0284]: type annotations needed: cannot normalize `<dyn Object<U, Output = T> as Object<U>>::Output`
-   --> $DIR/indirect-impl-for-trait-obj-coherence.rs:25:5
+   --> $DIR/indirect-impl-for-trait-obj-coherence.rs:25:41
3    |
4 LL |     foo::<dyn Object<U, Output = T>, U>(x)
-    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ cannot normalize `<dyn Object<U, Output = T> as Object<U>>::Output`
+    |                                         ^ cannot normalize `<dyn Object<U, Output = T> as Object<U>>::Output`
6 
7 error: aborting due to 1 previous error
8 

Note: some mismatched output was normalized before being compared
-   --> /checkout/tests/ui/coherence/indirect-impl-for-trait-obj-coherence.rs:25:41
+   --> $DIR/indirect-impl-for-trait-obj-coherence.rs:25:41
+    |                                         ^ cannot normalize `<dyn Object<U, Output = T> as Object<U>>::Output`


The actual stderr differed from the expected stderr
To update references, rerun the tests and pass the `--bless` flag
To only update this specific test, also pass `--test-args coherence/indirect-impl-for-trait-obj-coherence.rs`

error in revision `next`: 1 errors occurred comparing output.
status: exit status: 1
command: env -u RUSTC_LOG_COLOR RUSTC_ICE="0" RUST_BACKTRACE="short" "/checkout/obj/build/aarch64-unknown-linux-gnu/stage2/bin/rustc" "/checkout/tests/ui/coherence/indirect-impl-for-trait-obj-coherence.rs" "-Zthreads=1" "-Zsimulate-remapped-rust-src-base=/rustc/FAKE_PREFIX" "-Ztranslate-remapped-path-to-local-path=no" "-Z" "ignore-directory-in-diagnostics-source-blocks=/cargo" "-Z" "ignore-directory-in-diagnostics-source-blocks=/checkout/vendor" "--sysroot" "/checkout/obj/build/aarch64-unknown-linux-gnu/stage2" "--target=aarch64-unknown-linux-gnu" "--cfg" "next" "--check-cfg" "cfg(test,FALSE,current,next)" "--error-format" "json" "--json" "future-incompat" "-Ccodegen-units=1" "-Zui-testing" "-Zdeduplicate-diagnostics=no" "-Zwrite-long-types-to-disk=no" "-Cstrip=debuginfo" "--emit" "metadata" "-C" "prefer-dynamic" "--out-dir" "/checkout/obj/build/aarch64-unknown-linux-gnu/test/ui/coherence/indirect-impl-for-trait-obj-coherence.next" "-A" "unused" "-W" "unused_attributes" "-A" "internal_features" "-A" "incomplete_features" "-A" "unused_parens" "-A" "unused_braces" "-Crpath" "-Cdebuginfo=0" "-Lnative=/checkout/obj/build/aarch64-unknown-linux-gnu/native/rust-test-helpers" "-Znext-solver"
stdout: none
--- stderr -------------------------------
error[E0284]: type annotations needed: cannot normalize `<dyn Object<U, Output = T> as Object<U>>::Output`
##[error]  --> /checkout/tests/ui/coherence/indirect-impl-for-trait-obj-coherence.rs:25:41
   |
LL |     foo::<dyn Object<U, Output = T>, U>(x)
   |                                         ^ cannot normalize `<dyn Object<U, Output = T> as Object<U>>::Output`

error: aborting due to 1 previous error

For more information about this error, try `rustc --explain E0284`.
------------------------------------------
---
diff of stderr:

15    = note: this behavior recently changed as a result of a bug fix; see rust-lang/rust#56105 for details
16 
17 error[E0284]: type annotations needed: cannot normalize `<for<'a> fn(&'a (), ()) as Overlap<for<'a> fn(&'a (), ())>>::Assoc`
-   --> $DIR/associated-type.rs:45:5
+   --> $DIR/associated-type.rs:45:59
19    |
20 LL |     foo::<for<'a> fn(&'a (), ()), for<'a> fn(&'a (), ())>(3usize);
-    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ cannot normalize `<for<'a> fn(&'a (), ()) as Overlap<for<'a> fn(&'a (), ())>>::Assoc`
+    |                                                           ^^^^^^ cannot normalize `<for<'a> fn(&'a (), ()) as Overlap<for<'a> fn(&'a (), ())>>::Assoc`
22 
23 error: aborting due to 2 previous errors
24 

Note: some mismatched output was normalized before being compared
-   --> /checkout/tests/ui/coherence/occurs-check/associated-type.rs:45:59
+   --> $DIR/associated-type.rs:45:59
+    |                                                           ^^^^^^ cannot normalize `<for<'a> fn(&'a (), ()) as Overlap<for<'a> fn(&'a (), ())>>::Assoc`


The actual stderr differed from the expected stderr
To update references, rerun the tests and pass the `--bless` flag
To only update this specific test, also pass `--test-args coherence/occurs-check/associated-type.rs`

error in revision `next`: 1 errors occurred comparing output.
status: exit status: 1
command: env -u RUSTC_LOG_COLOR RUSTC_ICE="0" RUST_BACKTRACE="short" "/checkout/obj/build/aarch64-unknown-linux-gnu/stage2/bin/rustc" "/checkout/tests/ui/coherence/occurs-check/associated-type.rs" "-Zthreads=1" "-Zsimulate-remapped-rust-src-base=/rustc/FAKE_PREFIX" "-Ztranslate-remapped-path-to-local-path=no" "-Z" "ignore-directory-in-diagnostics-source-blocks=/cargo" "-Z" "ignore-directory-in-diagnostics-source-blocks=/checkout/vendor" "--sysroot" "/checkout/obj/build/aarch64-unknown-linux-gnu/stage2" "--target=aarch64-unknown-linux-gnu" "--cfg" "next" "--check-cfg" "cfg(test,FALSE,old,next)" "--error-format" "json" "--json" "future-incompat" "-Ccodegen-units=1" "-Zui-testing" "-Zdeduplicate-diagnostics=no" "-Zwrite-long-types-to-disk=no" "-Cstrip=debuginfo" "--emit" "metadata" "-C" "prefer-dynamic" "--out-dir" "/checkout/obj/build/aarch64-unknown-linux-gnu/test/ui/coherence/occurs-check/associated-type.next" "-A" "unused" "-W" "unused_attributes" "-A" "internal_features" "-A" "incomplete_features" "-A" "unused_parens" "-A" "unused_braces" "-Crpath" "-Cdebuginfo=0" "-Lnative=/checkout/obj/build/aarch64-unknown-linux-gnu/native/rust-test-helpers" "-Znext-solver"
stdout: none
--- stderr -------------------------------
 WARN rustc_infer::infer::relate::generalize may incompletely handle alias type: AliasTerm { args: [*const ?1t, '^0.Named(DefId(0:27 ~ associated_type[f554]::{impl#3}::'a#1))], kind: ProjectionTy { def_id: DefId(0:5 ~ associated_type[f554]::ToUnit::Unit) }, .. }
 WARN rustc_infer::infer::relate::generalize may incompletely handle alias type: AliasTerm { args: [*const ?1t, '^0.Named(DefId(0:27 ~ associated_type[f554]::{impl#3}::'a#1))], kind: ProjectionTy { def_id: DefId(0:5 ~ associated_type[f554]::ToUnit::Unit) }, .. }
error[E0119]: conflicting implementations of trait `Overlap<for<'a> fn(&'a (), ())>` for type `for<'a> fn(&'a (), ())`
##[error]  --> /checkout/tests/ui/coherence/occurs-check/associated-type.rs:32:1
   |
LL |   impl<T> Overlap<T> for T {
   |   ------------------------ first implementation here
...
LL | / impl<T> Overlap<for<'a> fn(&'a (), Assoc<'a, T>)> for T
LL | | //~^ ERROR conflicting implementations of trait
LL | | where
LL | |     for<'a> *const T: ToUnit<'a>,
   | |_________________________________^ conflicting implementation for `for<'a> fn(&'a (), ())`
   |
   = note: this behavior recently changed as a result of a bug fix; see rust-lang/rust#56105 for details

error[E0284]: type annotations needed: cannot normalize `<for<'a> fn(&'a (), ()) as Overlap<for<'a> fn(&'a (), ())>>::Assoc`
##[error]  --> /checkout/tests/ui/coherence/occurs-check/associated-type.rs:45:59
   |
LL |     foo::<for<'a> fn(&'a (), ()), for<'a> fn(&'a (), ())>(3usize);
   |                                                           ^^^^^^ cannot normalize `<for<'a> fn(&'a (), ()) as Overlap<for<'a> fn(&'a (), ())>>::Assoc`

error: aborting due to 2 previous errors

Some errors have detailed explanations: E0119, E0284.
For more information about an error, try `rustc --explain E0119`.
------------------------------------------

---- [ui] tests/ui/coherence/occurs-check/associated-type.rs#next stdout end ----
---- [ui] tests/ui/const-generics/gca/ambiguous-on-failed-eval-with-vars-fail.rs#next stdout ----
Saved the actual stderr to `/checkout/obj/build/aarch64-unknown-linux-gnu/test/ui/const-generics/gca/ambiguous-on-failed-eval-with-vars-fail.next/ambiguous-on-failed-eval-with-vars-fail.next.stderr`
diff of stderr:

14 LL |     let (mut arr, mut arr_with_weird_len): ([_; N], _) = free();
15    |                                          +++++++++++++
16 
+ error[E0284]: type annotations needed for `([(); _], [(); 10])`
+   --> $DIR/ambiguous-on-failed-eval-with-vars-fail.rs:29:9
+    |
+ LL |     let (mut arr, mut arr_with_weird_len) = free();
+    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^   ---- type must be known at this point
+    |
+ help: consider giving this pattern a type, where the value of const parameter `N` is specified
+    |
+ LL |     let (mut arr, mut arr_with_weird_len): ([_; N], _) = free();
+    |                                          +++++++++++++
+ 
17 error[E0271]: type mismatch resolving `FREE::<10> == 2`
18   --> $DIR/ambiguous-on-failed-eval-with-vars-fail.rs:35:45
19    |

36 LL |     let (mut arr, mut arr_with_weird_len): ([_; N], _) = proj();
37    |                                          +++++++++++++
38 
+ error[E0284]: type annotations needed for `([(); _], [(); 10])`
+   --> $DIR/ambiguous-on-failed-eval-with-vars-fail.rs:46:9
+    |
+ LL |     let (mut arr, mut arr_with_weird_len) = proj();
+    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^   ---- type must be known at this point
+    |
+ help: consider giving this pattern a type, where the value of const parameter `N` is specified
+    |
+ LL |     let (mut arr, mut arr_with_weird_len): ([_; N], _) = proj();
+    |                                          +++++++++++++
+ 
39 error[E0271]: type mismatch resolving `<S as Trait>::PROJ::<10> == 2`
40   --> $DIR/ambiguous-on-failed-eval-with-vars-fail.rs:52:45
41    |

45    = note: expected constant `2`
46               found constant `10`
---

Note: some mismatched output was normalized before being compared
-   --> /checkout/tests/ui/const-generics/gca/ambiguous-on-failed-eval-with-vars-fail.rs:29:9
-   --> /checkout/tests/ui/const-generics/gca/ambiguous-on-failed-eval-with-vars-fail.rs:46:9
+ error[E0284]: type annotations needed for `([(); _], [(); 10])`
+   --> $DIR/ambiguous-on-failed-eval-with-vars-fail.rs:29:9
+    |
+ LL |     let (mut arr, mut arr_with_weird_len) = free();
+    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^   ---- type must be known at this point
+    |
+ help: consider giving this pattern a type, where the value of const parameter `N` is specified
+    |
+ LL |     let (mut arr, mut arr_with_weird_len): ([_; N], _) = free();
+    |                                          +++++++++++++
+ 
+ error[E0284]: type annotations needed for `([(); _], [(); 10])`
+   --> $DIR/ambiguous-on-failed-eval-with-vars-fail.rs:46:9
+    |
+ LL |     let (mut arr, mut arr_with_weird_len) = proj();
+    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^   ---- type must be known at this point
+    |
+ help: consider giving this pattern a type, where the value of const parameter `N` is specified
+    |
+ LL |     let (mut arr, mut arr_with_weird_len): ([_; N], _) = proj();
+    |                                          +++++++++++++
+ 
+ error: aborting due to 6 previous errors


The actual stderr differed from the expected stderr
To update references, rerun the tests and pass the `--bless` flag
To only update this specific test, also pass `--test-args const-generics/gca/ambiguous-on-failed-eval-with-vars-fail.rs`

error in revision `next`: 1 errors occurred comparing output.
status: exit status: 1
command: env -u RUSTC_LOG_COLOR RUSTC_ICE="0" RUST_BACKTRACE="short" "/checkout/obj/build/aarch64-unknown-linux-gnu/stage2/bin/rustc" "/checkout/tests/ui/const-generics/gca/ambiguous-on-failed-eval-with-vars-fail.rs" "-Zthreads=1" "-Zsimulate-remapped-rust-src-base=/rustc/FAKE_PREFIX" "-Ztranslate-remapped-path-to-local-path=no" "-Z" "ignore-directory-in-diagnostics-source-blocks=/cargo" "-Z" "ignore-directory-in-diagnostics-source-blocks=/checkout/vendor" "--sysroot" "/checkout/obj/build/aarch64-unknown-linux-gnu/stage2" "--target=aarch64-unknown-linux-gnu" "--cfg" "next" "--check-cfg" "cfg(test,FALSE,old,next)" "--error-format" "json" "--json" "future-incompat" "-Ccodegen-units=1" "-Zui-testing" "-Zdeduplicate-diagnostics=no" "-Zwrite-long-types-to-disk=no" "-Cstrip=debuginfo" "--emit" "metadata" "-C" "prefer-dynamic" "--out-dir" "/checkout/obj/build/aarch64-unknown-linux-gnu/test/ui/const-generics/gca/ambiguous-on-failed-eval-with-vars-fail.next" "-A" "unused" "-W" "unused_attributes" "-A" "internal_features" "-A" "incomplete_features" "-A" "unused_parens" "-A" "unused_braces" "-Crpath" "-Cdebuginfo=0" "-Lnative=/checkout/obj/build/aarch64-unknown-linux-gnu/native/rust-test-helpers" "-Znext-solver"
stdout: none
--- stderr -------------------------------
error[E0284]: type annotations needed for `([(); _], [(); 10])`
##[error]  --> /checkout/tests/ui/const-generics/gca/ambiguous-on-failed-eval-with-vars-fail.rs:29:9
   |
LL |     let (mut arr, mut arr_with_weird_len) = free();
   |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^   ------ type must be known at this point
   |
note: required by a const generic parameter in `free`
  --> /checkout/tests/ui/const-generics/gca/ambiguous-on-failed-eval-with-vars-fail.rs:24:9
   |
LL | fn free<const N: usize>() -> ([(); N], [(); FREE::<N>]) {
   |         ^^^^^^^^^^^^^^ required by this const generic parameter in `free`
help: consider giving this pattern a type, where the value of const parameter `N` is specified
   |
LL |     let (mut arr, mut arr_with_weird_len): ([_; N], _) = free();
   |                                          +++++++++++++

error[E0284]: type annotations needed for `([(); _], [(); 10])`
##[error]  --> /checkout/tests/ui/const-generics/gca/ambiguous-on-failed-eval-with-vars-fail.rs:29:9
   |
LL |     let (mut arr, mut arr_with_weird_len) = free();
   |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^   ---- type must be known at this point
   |
help: consider giving this pattern a type, where the value of const parameter `N` is specified
   |
LL |     let (mut arr, mut arr_with_weird_len): ([_; N], _) = free();
   |                                          +++++++++++++

error[E0271]: type mismatch resolving `FREE::<10> == 2`
##[error]  --> /checkout/tests/ui/const-generics/gca/ambiguous-on-failed-eval-with-vars-fail.rs:35:45
   |
LL |     let (mut arr, mut arr_with_weird_len) = free();
   |                                             ^^^^^^ types differ

error[E0284]: type annotations needed for `([(); _], [(); 10])`
##[error]  --> /checkout/tests/ui/const-generics/gca/ambiguous-on-failed-eval-with-vars-fail.rs:46:9
   |
LL |     let (mut arr, mut arr_with_weird_len) = proj();
   |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^   ------ type must be known at this point
   |
note: required by a const generic parameter in `proj`
  --> /checkout/tests/ui/const-generics/gca/ambiguous-on-failed-eval-with-vars-fail.rs:41:9
   |
LL | fn proj<const N: usize>() -> ([(); N], [(); <S as Trait>::PROJ::<N>]) {
   |         ^^^^^^^^^^^^^^ required by this const generic parameter in `proj`
help: consider giving this pattern a type, where the value of const parameter `N` is specified
   |
LL |     let (mut arr, mut arr_with_weird_len): ([_; N], _) = proj();
   |                                          +++++++++++++

error[E0284]: type annotations needed for `([(); _], [(); 10])`
##[error]  --> /checkout/tests/ui/const-generics/gca/ambiguous-on-failed-eval-with-vars-fail.rs:46:9
   |
LL |     let (mut arr, mut arr_with_weird_len) = proj();
   |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^   ---- type must be known at this point
   |
help: consider giving this pattern a type, where the value of const parameter `N` is specified
   |
LL |     let (mut arr, mut arr_with_weird_len): ([_; N], _) = proj();
   |                                          +++++++++++++

error[E0271]: type mismatch resolving `<S as Trait>::PROJ::<10> == 2`
##[error]  --> /checkout/tests/ui/const-generics/gca/ambiguous-on-failed-eval-with-vars-fail.rs:52:45
   |
LL |     let (mut arr, mut arr_with_weird_len) = proj();
   |                                             ^^^^^^ expected `2`, found `10`
   |
   = note: expected constant `2`
              found constant `10`

error: aborting due to 6 previous errors
---
diff of stderr:

40   --> $DIR/try-from-with-const-genericsrs-98299.rs:5:36
41    |
42 LL |     SmallCString::try_from(p).map(|cstr| cstr);
-    |     -------------------------      ^^^^
+    |     ----------------------         ^^^^
44    |     |
45    |     type must be known at this point
46    |
---
To only update this specific test, also pass `--test-args const-generics/try-from-with-const-genericsrs-98299.rs`

error: 1 errors occurred comparing output.
status: exit status: 1
command: env -u RUSTC_LOG_COLOR RUSTC_ICE="0" RUST_BACKTRACE="short" "/checkout/obj/build/aarch64-unknown-linux-gnu/stage2/bin/rustc" "/checkout/tests/ui/const-generics/try-from-with-const-genericsrs-98299.rs" "-Zthreads=1" "-Zsimulate-remapped-rust-src-base=/rustc/FAKE_PREFIX" "-Ztranslate-remapped-path-to-local-path=no" "-Z" "ignore-directory-in-diagnostics-source-blocks=/cargo" "-Z" "ignore-directory-in-diagnostics-source-blocks=/checkout/vendor" "--sysroot" "/checkout/obj/build/aarch64-unknown-linux-gnu/stage2" "--target=aarch64-unknown-linux-gnu" "--check-cfg" "cfg(test,FALSE)" "--error-format" "json" "--json" "future-incompat" "-Ccodegen-units=1" "-Zui-testing" "-Zdeduplicate-diagnostics=no" "-Zwrite-long-types-to-disk=no" "-Cstrip=debuginfo" "--emit" "metadata" "-C" "prefer-dynamic" "--out-dir" "/checkout/obj/build/aarch64-unknown-linux-gnu/test/ui/const-generics/try-from-with-const-genericsrs-98299" "-A" "unused" "-W" "unused_attributes" "-A" "internal_features" "-A" "incomplete_features" "-A" "unused_parens" "-A" "unused_braces" "-Crpath" "-Cdebuginfo=0" "-Lnative=/checkout/obj/build/aarch64-unknown-linux-gnu/native/rust-test-helpers"
stdout: none
--- stderr -------------------------------
error[E0284]: type annotations needed for `SmallCString<_>`
##[error]  --> /checkout/tests/ui/const-generics/try-from-with-const-genericsrs-98299.rs:5:36
   |
LL |     SmallCString::try_from(p).map(|cstr| cstr);
   |     ------------                   ^^^^
   |     |
   |     type must be known at this point
   |
note: required by a const generic parameter in `SmallCString`
  --> /checkout/tests/ui/const-generics/try-from-with-const-genericsrs-98299.rs:11:25
   |
LL | pub struct SmallCString<const N: usize> {}
   |                         ^^^^^^^^^^^^^^ required by this const generic parameter in `SmallCString`
help: consider giving this closure parameter an explicit type, where the value of const parameter `N` is specified
   |
LL |     SmallCString::try_from(p).map(|cstr: SmallCString<N>| cstr);
   |                                        +++++++++++++++++

error[E0284]: type annotations needed for `SmallCString<_>`
##[error]  --> /checkout/tests/ui/const-generics/try-from-with-const-genericsrs-98299.rs:5:36
   |
LL |     SmallCString::try_from(p).map(|cstr| cstr);
   |     ------------                   ^^^^
   |     |
   |     type must be known at this point
   |
note: required for `SmallCString<_>` to implement `TryFrom<()>`
  --> /checkout/tests/ui/const-generics/try-from-with-const-genericsrs-98299.rs:13:22
   |
LL | impl<const N: usize> TryFrom<()> for SmallCString<N> {
   |      --------------  ^^^^^^^^^^^     ^^^^^^^^^^^^^^^
   |      |
   |      unsatisfied trait bound introduced here
help: consider giving this closure parameter an explicit type, where the value of const parameter `N` is specified
   |
LL |     SmallCString::try_from(p).map(|cstr: SmallCString<N>| cstr);
   |                                        +++++++++++++++++

error[E0284]: type annotations needed for `SmallCString<_>`
##[error]  --> /checkout/tests/ui/const-generics/try-from-with-const-genericsrs-98299.rs:5:36
   |
LL |     SmallCString::try_from(p).map(|cstr| cstr);
   |     ----------------------         ^^^^
   |     |
   |     type must be known at this point
   |
note: required for `SmallCString<_>` to implement `TryFrom<()>`
  --> /checkout/tests/ui/const-generics/try-from-with-const-genericsrs-98299.rs:13:22
   |
LL | impl<const N: usize> TryFrom<()> for SmallCString<N> {
   |      --------------  ^^^^^^^^^^^     ^^^^^^^^^^^^^^^
   |      |
   |      unsatisfied trait bound introduced here
help: consider giving this closure parameter an explicit type, where the value of const parameter `N` is specified
   |
LL |     SmallCString::try_from(p).map(|cstr: SmallCString<N>| cstr);
   |                                        +++++++++++++++++

error: aborting due to 3 previous errors

For more information about this error, try `rustc --explain E0284`.
---
error in revision `next`: ui test did not emit an error
note: by default, ui tests are expected not to compile.
hint: use check-pass, build-pass, or run-pass directive to change this behavior.
status: exit status: 0
command: env -u RUSTC_LOG_COLOR RUSTC_ICE="0" RUST_BACKTRACE="short" "/checkout/obj/build/aarch64-unknown-linux-gnu/stage2/bin/rustc" "/checkout/tests/ui/coroutine/delayed-obligations-emit.rs" "-Zthreads=1" "-Zsimulate-remapped-rust-src-base=/rustc/FAKE_PREFIX" "-Ztranslate-remapped-path-to-local-path=no" "-Z" "ignore-directory-in-diagnostics-source-blocks=/cargo" "-Z" "ignore-directory-in-diagnostics-source-blocks=/checkout/vendor" "--sysroot" "/checkout/obj/build/aarch64-unknown-linux-gnu/stage2" "--target=aarch64-unknown-linux-gnu" "--cfg" "next" "--check-cfg" "cfg(test,FALSE,current,next)" "--error-format" "json" "--json" "future-incompat" "-Ccodegen-units=1" "-Zui-testing" "-Zdeduplicate-diagnostics=no" "-Zwrite-long-types-to-disk=no" "-Cstrip=debuginfo" "--emit" "metadata" "-C" "prefer-dynamic" "--out-dir" "/checkout/obj/build/aarch64-unknown-linux-gnu/test/ui/coroutine/delayed-obligations-emit.next" "-A" "unused" "-W" "unused_attributes" "-A" "internal_features" "-A" "incomplete_features" "-A" "unused_parens" "-A" "unused_braces" "-Crpath" "-Cdebuginfo=0" "-Lnative=/checkout/obj/build/aarch64-unknown-linux-gnu/native/rust-test-helpers" "--edition=2024" "-Znext-solver"
stdout: none
stderr: none

---- [ui] tests/ui/coroutine/delayed-obligations-emit.rs#next stdout end ----
---- [ui] tests/ui/generic-associated-types/bugs/issue-91762.rs stdout ----
Saved the actual stderr to `/checkout/obj/build/aarch64-unknown-linux-gnu/test/ui/generic-associated-types/bugs/issue-91762/issue-91762.stderr`
diff of stderr:

2   --> $DIR/issue-91762.rs:24:15
3    |
4 LL |         ret = <Self::Base as Functor>::fmap(arg);
-    |               ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ cannot infer type of the type parameter `T` declared on the associated function `fmap`
+    |               ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ --- type must be known at this point
+    |               |
+    |               cannot infer type of the type parameter `T` declared on the associated function `fmap`
6    |
-    = note: cannot satisfy `<<Self as FunctorExt<T>>::Base as Functor>::With<_> == Self`
+    = note: cannot satisfy `<<Self as FunctorExt<T>>::Base as Functor>::With<_> == _`
8 help: consider specifying the generic arguments
9    |
10 LL |         ret = <Self::Base as Functor>::fmap::<T, U>(arg);


The actual stderr differed from the expected stderr
To update references, rerun the tests and pass the `--bless` flag
To only update this specific test, also pass `--test-args generic-associated-types/bugs/issue-91762.rs`

error: 1 errors occurred comparing output.
status: exit status: 1
command: env -u RUSTC_LOG_COLOR RUSTC_ICE="0" RUST_BACKTRACE="short" "/checkout/obj/build/aarch64-unknown-linux-gnu/stage2/bin/rustc" "/checkout/tests/ui/generic-associated-types/bugs/issue-91762.rs" "-Zthreads=1" "-Zsimulate-remapped-rust-src-base=/rustc/FAKE_PREFIX" "-Ztranslate-remapped-path-to-local-path=no" "-Z" "ignore-directory-in-diagnostics-source-blocks=/cargo" "-Z" "ignore-directory-in-diagnostics-source-blocks=/checkout/vendor" "--sysroot" "/checkout/obj/build/aarch64-unknown-linux-gnu/stage2" "--target=aarch64-unknown-linux-gnu" "--check-cfg" "cfg(test,FALSE)" "--error-format" "json" "--json" "future-incompat" "-Ccodegen-units=1" "-Zui-testing" "-Zdeduplicate-diagnostics=no" "-Zwrite-long-types-to-disk=no" "-Cstrip=debuginfo" "--emit" "metadata" "-C" "prefer-dynamic" "--out-dir" "/checkout/obj/build/aarch64-unknown-linux-gnu/test/ui/generic-associated-types/bugs/issue-91762" "-A" "unused" "-W" "unused_attributes" "-A" "internal_features" "-A" "incomplete_features" "-A" "unused_parens" "-A" "unused_braces" "-Crpath" "-Cdebuginfo=0" "-Lnative=/checkout/obj/build/aarch64-unknown-linux-gnu/native/rust-test-helpers"
stdout: none
--- stderr -------------------------------
error[E0284]: type annotations needed
##[error]  --> /checkout/tests/ui/generic-associated-types/bugs/issue-91762.rs:24:15
   |
LL |         ret = <Self::Base as Functor>::fmap(arg);
   |               ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ --- type must be known at this point
   |               |
   |               cannot infer type of the type parameter `T` declared on the associated function `fmap`
   |
   = note: cannot satisfy `<<Self as FunctorExt<T>>::Base as Functor>::With<_> == _`
help: consider specifying the generic arguments
   |
LL |         ret = <Self::Base as Functor>::fmap::<T, U>(arg);
   |                                            ++++++++

error: aborting due to 1 previous error

For more information about this error, try `rustc --explain E0284`.
------------------------------------------

---- [ui] tests/ui/generic-associated-types/bugs/issue-91762.rs stdout end ----
---- [ui] tests/ui/impl-trait/in-trait/cycle-effective-visibilities-during-dyn-compatibility-check.rs stdout ----
Saved the actual stderr to `/checkout/obj/build/aarch64-unknown-linux-gnu/test/ui/impl-trait/in-trait/cycle-effective-visibilities-during-dyn-compatibility-check/cycle-effective-visibilities-during-dyn-compatibility-check.stderr`
diff of stderr:

29    = help: consider moving `foo` to another trait
30    = help: only type `Outer` implements `MyTrait`; consider using it directly instead.
31 
- error[E0277]: the trait bound `&dyn MyTrait: MyTrait` is not satisfied
-   --> $DIR/cycle-effective-visibilities-during-dyn-compatibility-check.rs:20:9
-    |
- LL |         MyTrait::foo(&self)
-    |         ^^^^^^^^^^^^^^^^^^^ the trait `MyTrait` is not implemented for `&dyn MyTrait`
-    |
- help: the trait `MyTrait` is implemented for `Outer`
-   --> $DIR/cycle-effective-visibilities-during-dyn-compatibility-check.rs:10:1
-    |
- LL | impl MyTrait for Outer {
-    | ^^^^^^^^^^^^^^^^^^^^^^
- 
44 error[E0038]: the trait `MyTrait` is not dyn compatible
45   --> $DIR/cycle-effective-visibilities-during-dyn-compatibility-check.rs:16:6
46    |

75    = help: consider moving `foo` to another trait
76    = help: only type `Outer` implements `MyTrait`; consider using it directly instead.
77 
- error: aborting due to 5 previous errors
+ error: aborting due to 4 previous errors
79 
80 Some errors have detailed explanations: E0038, E0277.
---
To only update this specific test, also pass `--test-args impl-trait/in-trait/cycle-effective-visibilities-during-dyn-compatibility-check.rs`

error: 1 errors occurred comparing output.
status: exit status: 1
command: env -u RUSTC_LOG_COLOR RUSTC_ICE="0" RUST_BACKTRACE="short" "/checkout/obj/build/aarch64-unknown-linux-gnu/stage2/bin/rustc" "/checkout/tests/ui/impl-trait/in-trait/cycle-effective-visibilities-during-dyn-compatibility-check.rs" "-Zthreads=1" "-Zsimulate-remapped-rust-src-base=/rustc/FAKE_PREFIX" "-Ztranslate-remapped-path-to-local-path=no" "-Z" "ignore-directory-in-diagnostics-source-blocks=/cargo" "-Z" "ignore-directory-in-diagnostics-source-blocks=/checkout/vendor" "--sysroot" "/checkout/obj/build/aarch64-unknown-linux-gnu/stage2" "--target=aarch64-unknown-linux-gnu" "--check-cfg" "cfg(test,FALSE)" "--error-format" "json" "--json" "future-incompat" "-Ccodegen-units=1" "-Zui-testing" "-Zdeduplicate-diagnostics=no" "-Zwrite-long-types-to-disk=no" "-Cstrip=debuginfo" "--emit" "metadata" "-C" "prefer-dynamic" "--out-dir" "/checkout/obj/build/aarch64-unknown-linux-gnu/test/ui/impl-trait/in-trait/cycle-effective-visibilities-during-dyn-compatibility-check" "-A" "unused" "-W" "unused_attributes" "-A" "internal_features" "-A" "incomplete_features" "-A" "unused_parens" "-A" "unused_braces" "-Crpath" "-Cdebuginfo=0" "-Lnative=/checkout/obj/build/aarch64-unknown-linux-gnu/native/rust-test-helpers"
stdout: none
--- stderr -------------------------------
error[E0277]: the trait bound `&dyn MyTrait: MyTrait` is not satisfied
##[error]  --> /checkout/tests/ui/impl-trait/in-trait/cycle-effective-visibilities-during-dyn-compatibility-check.rs:20:22
   |
LL |         MyTrait::foo(&self)
   |         ------------ ^^^^^ the trait `MyTrait` is not implemented for `&dyn MyTrait`
   |         |
   |         required by a bound introduced by this call
   |
help: the trait `MyTrait` is implemented for `Outer`
  --> /checkout/tests/ui/impl-trait/in-trait/cycle-effective-visibilities-during-dyn-compatibility-check.rs:10:1
   |
LL | impl MyTrait for Outer {
   | ^^^^^^^^^^^^^^^^^^^^^^

error[E0038]: the trait `MyTrait` is not dyn compatible
##[error]  --> /checkout/tests/ui/impl-trait/in-trait/cycle-effective-visibilities-during-dyn-compatibility-check.rs:20:9
   |
LL |         MyTrait::foo(&self)
   |         ^^^^^^^^^^^^ `MyTrait` is not dyn compatible
   |
note: for a trait to be dyn compatible it needs to allow building a vtable
      for more information, visit <https://doc.rust-lang.org/reference/items/traits.html#dyn-compatibility>
  --> /checkout/tests/ui/impl-trait/in-trait/cycle-effective-visibilities-during-dyn-compatibility-check.rs:5:22
   |
LL | trait MyTrait {
   |       ------- this trait is not dyn compatible...
LL |     fn foo(&self) -> impl Marker;
   |                      ^^^^^^^^^^^ ...because method `foo` references an `impl Trait` type in its return type
   = help: consider moving `foo` to another trait
   = help: only type `Outer` implements `MyTrait`; consider using it directly instead.

error[E0038]: the trait `MyTrait` is not dyn compatible
##[error]  --> /checkout/tests/ui/impl-trait/in-trait/cycle-effective-visibilities-during-dyn-compatibility-check.rs:16:6
   |
LL | impl dyn MyTrait {
   |      ^^^^^^^^^^^ `MyTrait` is not dyn compatible
   |
note: for a trait to be dyn compatible it needs to allow building a vtable
      for more information, visit <https://doc.rust-lang.org/reference/items/traits.html#dyn-compatibility>
  --> /checkout/tests/ui/impl-trait/in-trait/cycle-effective-visibilities-during-dyn-compatibility-check.rs:5:22
   |
LL | trait MyTrait {
   |       ------- this trait is not dyn compatible...
LL |     fn foo(&self) -> impl Marker;
   |                      ^^^^^^^^^^^ ...because method `foo` references an `impl Trait` type in its return type
   = help: consider moving `foo` to another trait
   = help: only type `Outer` implements `MyTrait`; consider using it directly instead.

error[E0038]: the trait `MyTrait` is not dyn compatible
##[error]  --> /checkout/tests/ui/impl-trait/in-trait/cycle-effective-visibilities-during-dyn-compatibility-check.rs:18:15
   |
LL |     fn other(&self) -> impl Marker {
   |               ^^^^ `MyTrait` is not dyn compatible
   |
note: for a trait to be dyn compatible it needs to allow building a vtable
      for more information, visit <https://doc.rust-lang.org/reference/items/traits.html#dyn-compatibility>
  --> /checkout/tests/ui/impl-trait/in-trait/cycle-effective-visibilities-during-dyn-compatibility-check.rs:5:22
   |
LL | trait MyTrait {
   |       ------- this trait is not dyn compatible...
LL |     fn foo(&self) -> impl Marker;
   |                      ^^^^^^^^^^^ ...because method `foo` references an `impl Trait` type in its return type
   = help: consider moving `foo` to another trait
   = help: only type `Outer` implements `MyTrait`; consider using it directly instead.

error: aborting due to 4 previous errors

Some errors have detailed explanations: E0038, E0277.
For more information about an error, try `rustc --explain E0038`.
------------------------------------------

---- [ui] tests/ui/impl-trait/in-trait/cycle-effective-visibilities-during-dyn-compatibility-check.rs stdout end ----
---- [ui] tests/ui/impl-trait/in-trait/false-positive-predicate-entailment-error.rs#next stdout ----

error in revision `next`: test compilation failed although it shouldn't!
status: exit status: 1
command: env -u RUSTC_LOG_COLOR RUSTC_ICE="0" RUST_BACKTRACE="short" "/checkout/obj/build/aarch64-unknown-linux-gnu/stage2/bin/rustc" "/checkout/tests/ui/impl-trait/in-trait/false-positive-predicate-entailment-error.rs" "-Zthreads=1" "-Zsimulate-remapped-rust-src-base=/rustc/FAKE_PREFIX" "-Ztranslate-remapped-path-to-local-path=no" "-Z" "ignore-directory-in-diagnostics-source-blocks=/cargo" "-Z" "ignore-directory-in-diagnostics-source-blocks=/checkout/vendor" "--sysroot" "/checkout/obj/build/aarch64-unknown-linux-gnu/stage2" "--target=aarch64-unknown-linux-gnu" "--cfg" "next" "--check-cfg" "cfg(test,FALSE,current,next)" "--error-format" "json" "--json" "future-incompat" "-Ccodegen-units=1" "-Zui-testing" "-Zdeduplicate-diagnostics=no" "-Zwrite-long-types-to-disk=no" "-Cstrip=debuginfo" "--emit" "metadata" "-C" "prefer-dynamic" "--out-dir" "/checkout/obj/build/aarch64-unknown-linux-gnu/test/ui/impl-trait/in-trait/false-positive-predicate-entailment-error.next" "-A" "unused" "-W" "unused_attributes" "-A" "internal_features" "-A" "incomplete_features" "-A" "unused_parens" "-A" "unused_braces" "-Crpath" "-Cdebuginfo=0" "-Lnative=/checkout/obj/build/aarch64-unknown-linux-gnu/native/rust-test-helpers" "-Znext-solver"
stdout: none
--- stderr -------------------------------
error[E0277]: the trait bound `F: MyFn<i32>` is not satisfied
##[error]  --> /checkout/tests/ui/impl-trait/in-trait/false-positive-predicate-entailment-error.rs:36:5
   |
LL | /     fn autobatch<F>(self) -> impl Trait
...  |
LL | |     where
LL | |         F: Callback<Self::CallbackArg>,
   | |_______________________________________^ the trait `MyFn<i32>` is not implemented for `F`
   |
note: required for `F` to implement `Callback<i32>`
  --> /checkout/tests/ui/impl-trait/in-trait/false-positive-predicate-entailment-error.rs:14:21
   |
LL | impl<A, F: MyFn<A>> Callback<A> for F {
   |            -------  ^^^^^^^^^^^     ^
   |            |
   |            unsatisfied trait bound introduced here
help: consider further restricting type parameter `F` with trait `MyFn`
   |
LL |         F: Callback<Self::CallbackArg> + MyFn<i32>,
   |                                        +++++++++++

error[E0277]: the trait bound `F: MyFn<i32>` is not satisfied
##[error]  --> /checkout/tests/ui/impl-trait/in-trait/false-positive-predicate-entailment-error.rs:36:5
   |
LL | /     fn autobatch<F>(self) -> impl Trait
...  |
LL | |     where
LL | |         F: Callback<Self::CallbackArg>,
   | |_______________________________________^ the trait `MyFn<i32>` is not implemented for `F`
   |
note: required for `F` to implement `Callback<i32>`
  --> /checkout/tests/ui/impl-trait/in-trait/false-positive-predicate-entailment-error.rs:14:21
   |
LL | impl<A, F: MyFn<A>> Callback<A> for F {
   |            -------  ^^^^^^^^^^^     ^
   |            |
   |            unsatisfied trait bound introduced here
   = note: duplicate diagnostic emitted due to `-Z deduplicate-diagnostics=no`
help: consider further restricting type parameter `F` with trait `MyFn`
   |
LL |         F: Callback<Self::CallbackArg> + MyFn<i32>,
   |                                        +++++++++++

error[E0277]: the trait bound `F: Callback<i32>` is not satisfied
##[error]  --> /checkout/tests/ui/impl-trait/in-trait/false-positive-predicate-entailment-error.rs:42:12
   |
LL |         F: Callback<Self::CallbackArg>,
   |            ^^^^^^^^^^^^^^^^^^^^^^^^^^^ the trait `MyFn<i32>` is not implemented for `F`
   |
note: required for `F` to implement `Callback<i32>`
  --> /checkout/tests/ui/impl-trait/in-trait/false-positive-predicate-entailment-error.rs:14:21
   |
LL | impl<A, F: MyFn<A>> Callback<A> for F {
   |            -------  ^^^^^^^^^^^     ^
   |            |
   |            unsatisfied trait bound introduced here
note: the requirement `F: Callback<i32>` appears on the `impl`'s method `autobatch` but not on the corresponding trait's method
  --> /checkout/tests/ui/impl-trait/in-trait/false-positive-predicate-entailment-error.rs:25:8
   |
LL | trait ChannelSender {
   |       ------------- in this trait
...
LL |     fn autobatch<F>(self) -> impl Trait
   |        ^^^^^^^^^ this trait's method doesn't have the requirement `F: Callback<i32>`
help: consider further restricting type parameter `F` with trait `MyFn`
   |
LL |         F: Callback<Self::CallbackArg> + MyFn<i32>,
   |                                        +++++++++++

error: the type `impl Trait` is not well-formed
##[error]  --> /checkout/tests/ui/impl-trait/in-trait/false-positive-predicate-entailment-error.rs:36:30
   |
LL |     fn autobatch<F>(self) -> impl Trait
   |                              ^^^^^^^^^^

error[E0277]: the trait bound `F: Callback<i32>` is not satisfied
##[error]  --> /checkout/tests/ui/impl-trait/in-trait/false-positive-predicate-entailment-error.rs:42:12
   |
LL |         F: Callback<Self::CallbackArg>,
   |            ^^^^^^^^^^^^^^^^^^^^^^^^^^^ the trait `MyFn<i32>` is not implemented for `F`
   |
note: required for `F` to implement `Callback<i32>`
  --> /checkout/tests/ui/impl-trait/in-trait/false-positive-predicate-entailment-error.rs:14:21
   |
LL | impl<A, F: MyFn<A>> Callback<A> for F {
   |            -------  ^^^^^^^^^^^     ^
   |            |
   |            unsatisfied trait bound introduced here
note: the requirement `F: Callback<i32>` appears on the `impl`'s method `autobatch` but not on the corresponding trait's method
  --> /checkout/tests/ui/impl-trait/in-trait/false-positive-predicate-entailment-error.rs:25:8
   |
LL | trait ChannelSender {
   |       ------------- in this trait
...
LL |     fn autobatch<F>(self) -> impl Trait
   |        ^^^^^^^^^ this trait's method doesn't have the requirement `F: Callback<i32>`
   = note: duplicate diagnostic emitted due to `-Z deduplicate-diagnostics=no`
help: consider further restricting type parameter `F` with trait `MyFn`
   |
LL |         F: Callback<Self::CallbackArg> + MyFn<i32>,
   |                                        +++++++++++

error[E0277]: the trait bound `F: MyFn<i32>` is not satisfied
##[error]  --> /checkout/tests/ui/impl-trait/in-trait/false-positive-predicate-entailment-error.rs:36:5
   |
LL | /     fn autobatch<F>(self) -> impl Trait
...  |
LL | |     where
LL | |         F: Callback<Self::CallbackArg>,
   | |_______________________________________^ the trait `MyFn<i32>` is not implemented for `F`
   |
note: required for `F` to implement `Callback<i32>`
  --> /checkout/tests/ui/impl-trait/in-trait/false-positive-predicate-entailment-error.rs:14:21
   |
LL | impl<A, F: MyFn<A>> Callback<A> for F {
   |            -------  ^^^^^^^^^^^     ^
   |            |
   |            unsatisfied trait bound introduced here
   = note: duplicate diagnostic emitted due to `-Z deduplicate-diagnostics=no`
help: consider further restricting type parameter `F` with trait `MyFn`
   |
LL |         F: Callback<Self::CallbackArg> + MyFn<i32>,
   |                                        +++++++++++

error[E0276]: impl has stricter requirements than trait
##[error]  --> /checkout/tests/ui/impl-trait/in-trait/false-positive-predicate-entailment-error.rs:36:5
   |
LL | /     fn autobatch<F>(self) -> impl Trait
LL | |     where
LL | |         F: Callback<Self::CallbackArg>;
   | |_______________________________________- definition of `autobatch` from trait
...
LL | /     fn autobatch<F>(self) -> impl Trait
...  |
LL | |     where
LL | |         F: Callback<Self::CallbackArg>,
   | |_______________________________________^ impl has extra requirement `impl Trait well-formed`

error[E0277]: the trait bound `F: MyFn<i32>` is not satisfied
##[error]  --> /checkout/tests/ui/impl-trait/in-trait/false-positive-predicate-entailment-error.rs:36:30
   |
LL |     fn autobatch<F>(self) -> impl Trait
   |                              ^^^^^^^^^^ the trait `MyFn<i32>` is not implemented for `F`
   |
note: required for `F` to implement `Callback<i32>`
  --> /checkout/tests/ui/impl-trait/in-trait/false-positive-predicate-entailment-error.rs:14:21
   |
LL | impl<A, F: MyFn<A>> Callback<A> for F {
   |            -------  ^^^^^^^^^^^     ^
   |            |
   |            unsatisfied trait bound introduced here

error[E0277]: the trait bound `F: Callback<i32>` is not satisfied
##[error]  --> /checkout/tests/ui/impl-trait/in-trait/false-positive-predicate-entailment-error.rs:27:12
   |
LL |         F: Callback<Self::CallbackArg>;
   |            ^^^^^^^^^^^^^^^^^^^^^^^^^^^ the trait `MyFn<i32>` is not implemented for `F`
   |
note: required for `F` to implement `Callback<i32>`
  --> /checkout/tests/ui/impl-trait/in-trait/false-positive-predicate-entailment-error.rs:14:21
   |
LL | impl<A, F: MyFn<A>> Callback<A> for F {
   |            -------  ^^^^^^^^^^^     ^
   |            |
   |            unsatisfied trait bound introduced here

error[E0277]: the trait bound `F: MyFn<i32>` is not satisfied
##[error]  --> /checkout/tests/ui/impl-trait/in-trait/false-positive-predicate-entailment-error.rs:36:5
   |
LL | /     fn autobatch<F>(self) -> impl Trait
...  |
LL | |     where
LL | |         F: Callback<Self::CallbackArg>,
   | |_______________________________________^ the trait `MyFn<i32>` is not implemented for `F`
   |
note: required for `F` to implement `Callback<i32>`
  --> /checkout/tests/ui/impl-trait/in-trait/false-positive-predicate-entailment-error.rs:14:21
   |
LL | impl<A, F: MyFn<A>> Callback<A> for F {
   |            -------  ^^^^^^^^^^^     ^
   |            |
   |            unsatisfied trait bound introduced here
   = note: duplicate diagnostic emitted due to `-Z deduplicate-diagnostics=no`
help: consider further restricting type parameter `F` with trait `MyFn`
   |
LL |         F: Callback<Self::CallbackArg> + MyFn<i32>,
   |                                        +++++++++++

error[E0277]: the trait bound `F: MyFn<i32>` is not satisfied
##[error]  --> /checkout/tests/ui/impl-trait/in-trait/false-positive-predicate-entailment-error.rs:42:12
   |
LL |         F: Callback<Self::CallbackArg>,
   |            ^^^^^^^^^^^^^^^^^^^^^^^^^^^ the trait `MyFn<i32>` is not implemented for `F`
   |
note: required by a bound in `Callback`
  --> /checkout/tests/ui/impl-trait/in-trait/false-positive-predicate-entailment-error.rs:10:20
   |
LL | trait Callback<A>: MyFn<A, Output = Self::Ret> {
   |                    ^^^^^^^^^^^^^^^^^^^^^^^^^^^ required by this bound in `Callback`
help: consider further restricting type parameter `F` with trait `MyFn`
   |
LL |         F: Callback<Self::CallbackArg> + MyFn<i32>,
   |                                        +++++++++++

error: the type `impl Trait` is not well-formed
##[error]  --> /checkout/tests/ui/impl-trait/in-trait/false-positive-predicate-entailment-error.rs:36:30
   |
LL |     fn autobatch<F>(self) -> impl Trait
   |                              ^^^^^^^^^^
   |
   = note: duplicate diagnostic emitted due to `-Z deduplicate-diagnostics=no`

error: aborting due to 12 previous errors
---
---- [ui] tests/ui/impl-trait/in-trait/issue-102140.rs stdout ----
Saved the actual stderr to `/checkout/obj/build/aarch64-unknown-linux-gnu/test/ui/impl-trait/in-trait/issue-102140/issue-102140.stderr`
diff of stderr:

12 LL +         MyTrait::foo(self)
13    |
14 
- error[E0277]: the trait bound `&dyn MyTrait: MyTrait` is not satisfied
-   --> $DIR/issue-102140.rs:20:9
-    |
- LL |         MyTrait::foo(&self)
-    |         ^^^^^^^^^^^^^^^^^^^ the trait `MyTrait` is not implemented for `&dyn MyTrait`
-    |
- help: the trait `MyTrait` is implemented for `Outer`
-   --> $DIR/issue-102140.rs:12:1
-    |
- LL | impl MyTrait for Outer {
-    | ^^^^^^^^^^^^^^^^^^^^^^
- 
---
To only update this specific test, also pass `--test-args impl-trait/in-trait/issue-102140.rs`

error: 1 errors occurred comparing output.
status: exit status: 1
command: env -u RUSTC_LOG_COLOR RUSTC_ICE="0" RUST_BACKTRACE="short" "/checkout/obj/build/aarch64-unknown-linux-gnu/stage2/bin/rustc" "/checkout/tests/ui/impl-trait/in-trait/issue-102140.rs" "-Zthreads=1" "-Zsimulate-remapped-rust-src-base=/rustc/FAKE_PREFIX" "-Ztranslate-remapped-path-to-local-path=no" "-Z" "ignore-directory-in-diagnostics-source-blocks=/cargo" "-Z" "ignore-directory-in-diagnostics-source-blocks=/checkout/vendor" "--sysroot" "/checkout/obj/build/aarch64-unknown-linux-gnu/stage2" "--target=aarch64-unknown-linux-gnu" "--check-cfg" "cfg(test,FALSE)" "--error-format" "json" "--json" "future-incompat" "-Ccodegen-units=1" "-Zui-testing" "-Zdeduplicate-diagnostics=no" "-Zwrite-long-types-to-disk=no" "-Cstrip=debuginfo" "--emit" "metadata" "-C" "prefer-dynamic" "--out-dir" "/checkout/obj/build/aarch64-unknown-linux-gnu/test/ui/impl-trait/in-trait/issue-102140" "-A" "unused" "-W" "unused_attributes" "-A" "internal_features" "-A" "incomplete_features" "-A" "unused_parens" "-A" "unused_braces" "-Crpath" "-Cdebuginfo=0" "-Lnative=/checkout/obj/build/aarch64-unknown-linux-gnu/native/rust-test-helpers"
stdout: none
--- stderr -------------------------------
error[E0277]: the trait bound `&dyn MyTrait: MyTrait` is not satisfied
##[error]  --> /checkout/tests/ui/impl-trait/in-trait/issue-102140.rs:20:22
   |
LL |         MyTrait::foo(&self)
   |         ------------ ^^^^^ the trait `MyTrait` is not implemented for `&dyn MyTrait`
   |         |
   |         required by a bound introduced by this call
   |
help: consider removing the leading `&`-reference
   |
LL -         MyTrait::foo(&self)
LL +         MyTrait::foo(self)
   |

error: aborting due to 1 previous error

For more information about this error, try `rustc --explain E0277`.
---
To only update this specific test, also pass `--test-args impl-trait/unsized_coercion.rs`

error in revision `next`: 1 errors occurred comparing output.
status: exit status: 1
command: env -u RUSTC_LOG_COLOR RUSTC_ICE="0" RUST_BACKTRACE="short" "/checkout/obj/build/aarch64-unknown-linux-gnu/stage2/bin/rustc" "/checkout/tests/ui/impl-trait/unsized_coercion.rs" "-Zthreads=1" "-Zsimulate-remapped-rust-src-base=/rustc/FAKE_PREFIX" "-Ztranslate-remapped-path-to-local-path=no" "-Z" "ignore-directory-in-diagnostics-source-blocks=/cargo" "-Z" "ignore-directory-in-diagnostics-source-blocks=/checkout/vendor" "--sysroot" "/checkout/obj/build/aarch64-unknown-linux-gnu/stage2" "--target=aarch64-unknown-linux-gnu" "--cfg" "next" "--check-cfg" "cfg(test,FALSE,next,old)" "--error-format" "json" "--json" "future-incompat" "-Ccodegen-units=1" "-Zui-testing" "-Zdeduplicate-diagnostics=no" "-Zwrite-long-types-to-disk=no" "-Cstrip=debuginfo" "--emit" "metadata" "-C" "prefer-dynamic" "--out-dir" "/checkout/obj/build/aarch64-unknown-linux-gnu/test/ui/impl-trait/unsized_coercion.next" "-A" "unused" "-W" "unused_attributes" "-A" "internal_features" "-A" "incomplete_features" "-A" "unused_parens" "-A" "unused_braces" "-Crpath" "-Cdebuginfo=0" "-Lnative=/checkout/obj/build/aarch64-unknown-linux-gnu/native/rust-test-helpers" "-Znext-solver"
stdout: none
--- stderr -------------------------------
error[E0277]: the size for values of type `dyn Trait` cannot be known at compilation time
##[error]  --> /checkout/tests/ui/impl-trait/unsized_coercion.rs:12:15
   |
LL | fn hello() -> Box<impl Trait> {
   |               ^^^^^^^^^^^^^^^ doesn't have a size known at compile-time
   |
   = help: the trait `Sized` is not implemented for `dyn Trait`

error[E0277]: the size for values of type `dyn Trait` cannot be known at compilation time
---
To only update this specific test, also pass `--test-args impl-trait/unsized_coercion3.rs`

error in revision `next`: 1 errors occurred comparing output.
status: exit status: 1
command: env -u RUSTC_LOG_COLOR RUSTC_ICE="0" RUST_BACKTRACE="short" "/checkout/obj/build/aarch64-unknown-linux-gnu/stage2/bin/rustc" "/checkout/tests/ui/impl-trait/unsized_coercion3.rs" "-Zthreads=1" "-Zsimulate-remapped-rust-src-base=/rustc/FAKE_PREFIX" "-Ztranslate-remapped-path-to-local-path=no" "-Z" "ignore-directory-in-diagnostics-source-blocks=/cargo" "-Z" "ignore-directory-in-diagnostics-source-blocks=/checkout/vendor" "--sysroot" "/checkout/obj/build/aarch64-unknown-linux-gnu/stage2" "--target=aarch64-unknown-linux-gnu" "--cfg" "next" "--check-cfg" "cfg(test,FALSE,next,old)" "--error-format" "json" "--json" "future-incompat" "-Ccodegen-units=1" "-Zui-testing" "-Zdeduplicate-diagnostics=no" "-Zwrite-long-types-to-disk=no" "-Cstrip=debuginfo" "--emit" "metadata" "-C" "prefer-dynamic" "--out-dir" "/checkout/obj/build/aarch64-unknown-linux-gnu/test/ui/impl-trait/unsized_coercion3.next" "-A" "unused" "-W" "unused_attributes" "-A" "internal_features" "-A" "incomplete_features" "-A" "unused_parens" "-A" "unused_braces" "-Crpath" "-Cdebuginfo=0" "-Lnative=/checkout/obj/build/aarch64-unknown-linux-gnu/native/rust-test-helpers" "-Znext-solver"
stdout: none
--- stderr -------------------------------
error[E0277]: the trait bound `dyn Send: Trait` is not satisfied
##[error]  --> /checkout/tests/ui/impl-trait/unsized_coercion3.rs:11:15
   |
LL | fn hello() -> Box<impl Trait + ?Sized> {
   |               ^^^^^^^^^^^^^^^^^^^^^^^^ the trait `Trait` is not implemented for `dyn Send`
   |
help: the trait `Trait` is implemented for `u32`
  --> /checkout/tests/ui/impl-trait/unsized_coercion3.rs:9:1
   |
LL | impl Trait for u32 {}
---
To only update this specific test, also pass `--test-args iterators/issue-28098.rs`

error: 1 errors occurred comparing output.
status: exit status: 1
command: env -u RUSTC_LOG_COLOR RUSTC_ICE="0" RUST_BACKTRACE="short" "/checkout/obj/build/aarch64-unknown-linux-gnu/stage2/bin/rustc" "/checkout/tests/ui/iterators/issue-28098.rs" "-Zthreads=1" "-Zsimulate-remapped-rust-src-base=/rustc/FAKE_PREFIX" "-Ztranslate-remapped-path-to-local-path=no" "-Z" "ignore-directory-in-diagnostics-source-blocks=/cargo" "-Z" "ignore-directory-in-diagnostics-source-blocks=/checkout/vendor" "--sysroot" "/checkout/obj/build/aarch64-unknown-linux-gnu/stage2" "--target=aarch64-unknown-linux-gnu" "--check-cfg" "cfg(test,FALSE)" "--error-format" "json" "--json" "future-incompat" "-Ccodegen-units=1" "-Zui-testing" "-Zdeduplicate-diagnostics=no" "-Zwrite-long-types-to-disk=no" "-Cstrip=debuginfo" "--emit" "metadata" "-C" "prefer-dynamic" "--out-dir" "/checkout/obj/build/aarch64-unknown-linux-gnu/test/ui/iterators/issue-28098" "-A" "unused" "-W" "unused_attributes" "-A" "internal_features" "-A" "incomplete_features" "-A" "unused_parens" "-A" "unused_braces" "-Crpath" "-Cdebuginfo=0" "-Lnative=/checkout/obj/build/aarch64-unknown-linux-gnu/native/rust-test-helpers"
stdout: none
--- stderr -------------------------------
error[E0277]: `()` is not an iterator
##[error]  --> /checkout/tests/ui/iterators/issue-28098.rs:2:28
   |
---
To only update this specific test, also pass `--test-args methods/rigid-alias-bound-is-not-inherent.rs`

error in revision `next`: 1 errors occurred comparing output.
status: exit status: 1
command: env -u RUSTC_LOG_COLOR RUSTC_ICE="0" RUST_BACKTRACE="short" "/checkout/obj/build/aarch64-unknown-linux-gnu/stage2/bin/rustc" "/checkout/tests/ui/methods/rigid-alias-bound-is-not-inherent.rs" "-Zthreads=1" "-Zsimulate-remapped-rust-src-base=/rustc/FAKE_PREFIX" "-Ztranslate-remapped-path-to-local-path=no" "-Z" "ignore-directory-in-diagnostics-source-blocks=/cargo" "-Z" "ignore-directory-in-diagnostics-source-blocks=/checkout/vendor" "--sysroot" "/checkout/obj/build/aarch64-unknown-linux-gnu/stage2" "--target=aarch64-unknown-linux-gnu" "--cfg" "next" "--check-cfg" "cfg(test,FALSE,current,next)" "--error-format" "json" "--json" "future-incompat" "-Ccodegen-units=1" "-Zui-testing" "-Zdeduplicate-diagnostics=no" "-Zwrite-long-types-to-disk=no" "-Cstrip=debuginfo" "--emit" "metadata" "-C" "prefer-dynamic" "--out-dir" "/checkout/obj/build/aarch64-unknown-linux-gnu/test/ui/methods/rigid-alias-bound-is-not-inherent.next" "-A" "unused" "-W" "unused_attributes" "-A" "internal_features" "-A" "incomplete_features" "-A" "unused_parens" "-A" "unused_braces" "-Crpath" "-Cdebuginfo=0" "-Lnative=/checkout/obj/build/aarch64-unknown-linux-gnu/native/rust-test-helpers" "-Znext-solver"
stdout: none
--- stderr -------------------------------
error[E0034]: multiple applicable items in scope
##[error]  --> /checkout/tests/ui/methods/rigid-alias-bound-is-not-inherent.rs:42:7
   |
---
25 
+ error[E0277]: the trait bound `(): Project` is not satisfied
+   --> $DIR/bad-projection.rs:14:1
+    |
+ LL | pub fn uwu() -> <() as Project>::Assoc {}
+    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ the trait `Project` is not implemented for `()`
+    |
+ help: this trait has no implementations, consider adding one
+   --> $DIR/bad-projection.rs:9:1
+    |
+ LL | trait Project {
---
- 
- error[E0277]: the trait bound `(): Project` is not satisfied
-   --> $DIR/bad-projection.rs:14:1
-    |
- LL | pub fn uwu() -> <() as Project>::Assoc {}
-    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ the trait `Project` is not implemented for `()`
-    |
- help: this trait has no implementations, consider adding one
-   --> $DIR/bad-projection.rs:9:1
-    |
- LL | trait Project {
---
-   --> /checkout/tests/ui/proc-macro/bad-projection.rs:9:1
+ error[E0277]: the trait bound `(): Project` is not satisfied
+   --> $DIR/bad-projection.rs:14:1
+    |
+ LL | pub fn uwu() -> <() as Project>::Assoc {}
+    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ the trait `Project` is not implemented for `()`
+    |
+ help: this trait has no implementations, consider adding one
+   --> $DIR/bad-projection.rs:9:1
+    |
+ LL | trait Project {
---
To only update this specific test, also pass `--test-args proc-macro/bad-projection.rs`

error: 1 errors occurred comparing output.
status: exit status: 1
command: env -u RUSTC_LOG_COLOR RUSTC_ICE="0" RUST_BACKTRACE="short" "/checkout/obj/build/aarch64-unknown-linux-gnu/stage2/bin/rustc" "/checkout/tests/ui/proc-macro/bad-projection.rs" "-Zthreads=1" "-Zsimulate-remapped-rust-src-base=/rustc/FAKE_PREFIX" "-Ztranslate-remapped-path-to-local-path=no" "-Z" "ignore-directory-in-diagnostics-source-blocks=/cargo" "-Z" "ignore-directory-in-diagnostics-source-blocks=/checkout/vendor" "--sysroot" "/checkout/obj/build/aarch64-unknown-linux-gnu/stage2" "--target=aarch64-unknown-linux-gnu" "--check-cfg" "cfg(test,FALSE)" "--error-format" "json" "--json" "future-incompat" "-Ccodegen-units=1" "-Zui-testing" "-Zdeduplicate-diagnostics=no" "-Zwrite-long-types-to-disk=no" "-Cstrip=debuginfo" "--emit" "metadata" "--out-dir" "/checkout/obj/build/aarch64-unknown-linux-gnu/test/ui/proc-macro/bad-projection" "-A" "unused" "-W" "unused_attributes" "-A" "internal_features" "-A" "incomplete_features" "-A" "unused_parens" "-A" "unused_braces" "-Crpath" "-Cdebuginfo=0" "-Lnative=/checkout/obj/build/aarch64-unknown-linux-gnu/native/rust-test-helpers"
stdout: none
--- stderr -------------------------------
error[E0277]: the trait bound `(): Project` is not satisfied
##[error]  --> /checkout/tests/ui/proc-macro/bad-projection.rs:14:17
   |
LL | pub fn uwu() -> <() as Project>::Assoc {}
   |                 ^^^^^^^^^^^^^^^^^^^^^^ the trait `Project` is not implemented for `()`
   |
help: this trait has no implementations, consider adding one
  --> /checkout/tests/ui/proc-macro/bad-projection.rs:9:1
   |
LL | trait Project {
   | ^^^^^^^^^^^^^

error[E0277]: the trait bound `(): Project` is not satisfied
##[error]  --> /checkout/tests/ui/proc-macro/bad-projection.rs:14:17
   |
LL | pub fn uwu() -> <() as Project>::Assoc {}
   |                 ^^^^^^^^^^^^^^^^^^^^^^ the trait `Project` is not implemented for `()`
   |
help: this trait has no implementations, consider adding one
  --> /checkout/tests/ui/proc-macro/bad-projection.rs:9:1
   |
LL | trait Project {
   | ^^^^^^^^^^^^^
   = note: duplicate diagnostic emitted due to `-Z deduplicate-diagnostics=no`

error[E0277]: the trait bound `(): Project` is not satisfied
##[error]  --> /checkout/tests/ui/proc-macro/bad-projection.rs:14:1
   |
LL | pub fn uwu() -> <() as Project>::Assoc {}
   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ the trait `Project` is not implemented for `()`
   |
help: this trait has no implementations, consider adding one
  --> /checkout/tests/ui/proc-macro/bad-projection.rs:9:1
   |
LL | trait Project {
   | ^^^^^^^^^^^^^

error[E0593]: function is expected to take 1 argument, but it takes 0 arguments
##[error]  --> /checkout/tests/ui/proc-macro/bad-projection.rs:14:1
   |
LL | pub fn uwu() -> <() as Project>::Assoc {}
   | --------------------------------------^^^
   | |
   | expected function that takes 1 argument
   | takes 0 arguments
   | required by a bound introduced by this call
   |
note: required by a bound in `proc_macro::bridge::client::ProcMacro::bang`
  --> /rustc/FAKE_PREFIX/library/proc_macro/src/bridge/client.rs:366:4

error[E0277]: the trait bound `(): Project` is not satisfied
##[error]  --> /checkout/tests/ui/proc-macro/bad-projection.rs:14:1
   |
LL | pub fn uwu() -> <() as Project>::Assoc {}
   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ the trait `Project` is not implemented for `()`
   |
help: this trait has no implementations, consider adding one
  --> /checkout/tests/ui/proc-macro/bad-projection.rs:9:1
   |
LL | trait Project {
---

+ error[E0284]: type annotations needed: cannot normalize `<&T as Foo>::Item`
+   --> $DIR/next-solver-region-resolution.rs:18:1
+    |
+ LL | / impl<'a, T> Foo for &T
+ LL | |
+ LL | | where
+ LL | |     Self::Item: Baz,
+    | |____________________^ cannot normalize `<&T as Foo>::Item`
+ 
+ error[E0284]: type annotations needed: cannot normalize `<&'a T as Foo>::Item`
+   --> $DIR/next-solver-region-resolution.rs:12:1
+    |
+ LL | / impl<'a, T> Foo for &'a T
+ LL | | where
+ LL | |     Self::Item: 'a,
+    | |___________________^ cannot normalize `<&'a T as Foo>::Item`
+ 
1 error[E0119]: conflicting implementations of trait `Foo` for type `&_`
2   --> $DIR/next-solver-region-resolution.rs:18:1
3    |

---
-   --> /checkout/tests/ui/specialization/min_specialization/next-solver-region-resolution.rs:12:1
+ error[E0284]: type annotations needed: cannot normalize `<&T as Foo>::Item`
+   --> $DIR/next-solver-region-resolution.rs:18:1
+    |
+ LL | / impl<'a, T> Foo for &T
+ LL | |
+ LL | | where
+ LL | |     Self::Item: Baz,
+    | |____________________^ cannot normalize `<&T as Foo>::Item`
+ 
+ error[E0284]: type annotations needed: cannot normalize `<&'a T as Foo>::Item`
+   --> $DIR/next-solver-region-resolution.rs:12:1
+    |
+ LL | / impl<'a, T> Foo for &'a T
+ LL | | where
+ LL | |     Self::Item: 'a,
+    | |___________________^ cannot normalize `<&'a T as Foo>::Item`
+ 
+ error: aborting due to 3 previous errors
+ Some errors have detailed explanations: E0119, E0284.
+ For more information about an error, try `rustc --explain E0119`.


The actual stderr differed from the expected stderr
To update references, rerun the tests and pass the `--bless` flag
To only update this specific test, also pass `--test-args specialization/min_specialization/next-solver-region-resolution.rs`

error: 1 errors occurred comparing output.
status: exit status: 1
command: env -u RUSTC_LOG_COLOR RUSTC_ICE="0" RUST_BACKTRACE="short" "/checkout/obj/build/aarch64-unknown-linux-gnu/stage2/bin/rustc" "/checkout/tests/ui/specialization/min_specialization/next-solver-region-resolution.rs" "-Zthreads=1" "-Zsimulate-remapped-rust-src-base=/rustc/FAKE_PREFIX" "-Ztranslate-remapped-path-to-local-path=no" "-Z" "ignore-directory-in-diagnostics-source-blocks=/cargo" "-Z" "ignore-directory-in-diagnostics-source-blocks=/checkout/vendor" "--sysroot" "/checkout/obj/build/aarch64-unknown-linux-gnu/stage2" "--target=aarch64-unknown-linux-gnu" "--check-cfg" "cfg(test,FALSE)" "--error-format" "json" "--json" "future-incompat" "-Ccodegen-units=1" "-Zui-testing" "-Zdeduplicate-diagnostics=no" "-Zwrite-long-types-to-disk=no" "-Cstrip=debuginfo" "--emit" "metadata" "-C" "prefer-dynamic" "--out-dir" "/checkout/obj/build/aarch64-unknown-linux-gnu/test/ui/specialization/min_specialization/next-solver-region-resolution" "-A" "unused" "-W" "unused_attributes" "-A" "internal_features" "-A" "incomplete_features" "-A" "unused_parens" "-A" "unused_braces" "-Crpath" "-Cdebuginfo=0" "-Lnative=/checkout/obj/build/aarch64-unknown-linux-gnu/native/rust-test-helpers" "-Znext-solver=globally"
stdout: none
--- stderr -------------------------------
error[E0284]: type annotations needed: cannot normalize `<&T as Foo>::Item`
##[error]  --> /checkout/tests/ui/specialization/min_specialization/next-solver-region-resolution.rs:18:1
   |
LL | / impl<'a, T> Foo for &T
LL | | //~^ ERROR: conflicting implementations of trait `Foo` for type `&_`
LL | | where
LL | |     Self::Item: Baz,
   | |____________________^ cannot normalize `<&T as Foo>::Item`

error[E0284]: type annotations needed: cannot normalize `<&'a T as Foo>::Item`
##[error]  --> /checkout/tests/ui/specialization/min_specialization/next-solver-region-resolution.rs:12:1
   |
LL | / impl<'a, T> Foo for &'a T
LL | | where
LL | |     Self::Item: 'a,
   | |___________________^ cannot normalize `<&'a T as Foo>::Item`

error[E0119]: conflicting implementations of trait `Foo` for type `&_`
##[error]  --> /checkout/tests/ui/specialization/min_specialization/next-solver-region-resolution.rs:18:1
   |
LL | / impl<'a, T> Foo for &'a T
---
Saved the actual stderr to `/checkout/obj/build/aarch64-unknown-linux-gnu/test/ui/traits/const-traits/unsatisfied-const-trait-bound/unsatisfied-const-trait-bound.stderr`
diff of stderr:

42    |
43 LL | fn accept0<T: Trait>(_: Container<{ T::make() }>) {}
44    |                                   ^^^^^^^^^^^^^
+ note: ...which requires computing normalized predicates of `accept0::{constant#0}`...
+   --> $DIR/unsatisfied-const-trait-bound.rs:28:35
+    |
+ LL | fn accept0<T: Trait>(_: Container<{ T::make() }>) {}
+    |                                   ^^^^^^^^^^^^^
45    = note: ...which again requires evaluating type-level constant, completing the cycle
- note: cycle used when checking that `accept0` is well-formed
+ note: cycle used when computing normalized predicates of `accept0`
47   --> $DIR/unsatisfied-const-trait-bound.rs:28:35
48    |
49 LL | fn accept0<T: Trait>(_: Container<{ T::make() }>) {}

72 LL | const fn accept1<T: [const] Trait>(_: Container<{ T::make() }>) {}
73    |                                                 ^^^^^^^^^^^^^
74 note: ...which requires type-checking `accept1::{constant#0}`...
+   --> $DIR/unsatisfied-const-trait-bound.rs:32:49
+    |
+ LL | const fn accept1<T: [const] Trait>(_: Container<{ T::make() }>) {}
+    |                                                 ^^^^^^^^^^^^^
+ note: ...which requires computing normalized predicates of `accept1::{constant#0}`...
75   --> $DIR/unsatisfied-const-trait-bound.rs:32:49
76    |
77 LL | const fn accept1<T: [const] Trait>(_: Container<{ T::make() }>) {}

Note: some mismatched output was normalized before being compared
-   --> /checkout/tests/ui/traits/const-traits/unsatisfied-const-trait-bound.rs:28:35
-   --> /checkout/tests/ui/traits/const-traits/unsatisfied-const-trait-bound.rs:32:49
+ note: ...which requires computing normalized predicates of `accept0::{constant#0}`...
+   --> $DIR/unsatisfied-const-trait-bound.rs:28:35
+    |
+ LL | fn accept0<T: Trait>(_: Container<{ T::make() }>) {}
+    |                                   ^^^^^^^^^^^^^
+ note: cycle used when computing normalized predicates of `accept0`
+   --> $DIR/unsatisfied-const-trait-bound.rs:32:49
+    |
+ LL | const fn accept1<T: [const] Trait>(_: Container<{ T::make() }>) {}
+    |                                                 ^^^^^^^^^^^^^
+ note: ...which requires computing normalized predicates of `accept1::{constant#0}`...


The actual stderr differed from the expected stderr
To update references, rerun the tests and pass the `--bless` flag
To only update this specific test, also pass `--test-args traits/const-traits/unsatisfied-const-trait-bound.rs`

error: 1 errors occurred comparing output.
status: exit status: 1
command: env -u RUSTC_LOG_COLOR RUSTC_ICE="0" RUST_BACKTRACE="short" "/checkout/obj/build/aarch64-unknown-linux-gnu/stage2/bin/rustc" "/checkout/tests/ui/traits/const-traits/unsatisfied-const-trait-bound.rs" "-Zthreads=1" "-Zsimulate-remapped-rust-src-base=/rustc/FAKE_PREFIX" "-Ztranslate-remapped-path-to-local-path=no" "-Z" "ignore-directory-in-diagnostics-source-blocks=/cargo" "-Z" "ignore-directory-in-diagnostics-source-blocks=/checkout/vendor" "--sysroot" "/checkout/obj/build/aarch64-unknown-linux-gnu/stage2" "--target=aarch64-unknown-linux-gnu" "--check-cfg" "cfg(test,FALSE)" "--error-format" "json" "--json" "future-incompat" "-Ccodegen-units=1" "-Zui-testing" "-Zdeduplicate-diagnostics=no" "-Zwrite-long-types-to-disk=no" "-Cstrip=debuginfo" "--emit" "metadata" "-C" "prefer-dynamic" "--out-dir" "/checkout/obj/build/aarch64-unknown-linux-gnu/test/ui/traits/const-traits/unsatisfied-const-trait-bound" "-A" "unused" "-W" "unused_attributes" "-A" "internal_features" "-A" "incomplete_features" "-A" "unused_parens" "-A" "unused_braces" "-Crpath" "-Cdebuginfo=0" "-Lnative=/checkout/obj/build/aarch64-unknown-linux-gnu/native/rust-test-helpers" "-Znext-solver"
stdout: none
--- stderr -------------------------------
error: `-Znext-solver=globally` and `generic_const_exprs` are incompatible, using them at the same time is not allowed
##[error]  --> /checkout/tests/ui/traits/const-traits/unsatisfied-const-trait-bound.rs:5:30
   |
---

error[E0391]: cycle detected when evaluating type-level constant
##[error]  --> /checkout/tests/ui/traits/const-traits/unsatisfied-const-trait-bound.rs:28:35
   |
LL | fn accept0<T: Trait>(_: Container<{ T::make() }>) {}
   |                                   ^^^^^^^^^^^^^
   |
note: ...which requires const-evaluating + checking `accept0::{constant#0}`...
  --> /checkout/tests/ui/traits/const-traits/unsatisfied-const-trait-bound.rs:28:35
   |
LL | fn accept0<T: Trait>(_: Container<{ T::make() }>) {}
   |                                   ^^^^^^^^^^^^^
note: ...which requires checking if `accept0::{constant#0}` is a trivial const...
  --> /checkout/tests/ui/traits/const-traits/unsatisfied-const-trait-bound.rs:28:35
   |
LL | fn accept0<T: Trait>(_: Container<{ T::make() }>) {}
   |                                   ^^^^^^^^^^^^^
note: ...which requires building MIR for `accept0::{constant#0}`...
  --> /checkout/tests/ui/traits/const-traits/unsatisfied-const-trait-bound.rs:28:35
   |
LL | fn accept0<T: Trait>(_: Container<{ T::make() }>) {}
   |                                   ^^^^^^^^^^^^^
note: ...which requires building an abstract representation for `accept0::{constant#0}`...
  --> /checkout/tests/ui/traits/const-traits/unsatisfied-const-trait-bound.rs:28:35
   |
LL | fn accept0<T: Trait>(_: Container<{ T::make() }>) {}
   |                                   ^^^^^^^^^^^^^
note: ...which requires building THIR for `accept0::{constant#0}`...
  --> /checkout/tests/ui/traits/const-traits/unsatisfied-const-trait-bound.rs:28:35
   |
LL | fn accept0<T: Trait>(_: Container<{ T::make() }>) {}
   |                                   ^^^^^^^^^^^^^
note: ...which requires type-checking `accept0::{constant#0}`...
  --> /checkout/tests/ui/traits/const-traits/unsatisfied-const-trait-bound.rs:28:35
   |
LL | fn accept0<T: Trait>(_: Container<{ T::make() }>) {}
   |                                   ^^^^^^^^^^^^^
note: ...which requires computing normalized predicates of `accept0::{constant#0}`...
  --> /checkout/tests/ui/traits/const-traits/unsatisfied-const-trait-bound.rs:28:35
   |
LL | fn accept0<T: Trait>(_: Container<{ T::make() }>) {}
   |                                   ^^^^^^^^^^^^^
   = note: ...which again requires evaluating type-level constant, completing the cycle
note: cycle used when computing normalized predicates of `accept0`
  --> /checkout/tests/ui/traits/const-traits/unsatisfied-const-trait-bound.rs:28:35
   |
LL | fn accept0<T: Trait>(_: Container<{ T::make() }>) {}
   |                                   ^^^^^^^^^^^^^
   = note: see https://rustc-dev-guide.rust-lang.org/overview.html#queries and https://rustc-dev-guide.rust-lang.org/query.html for more information

error[E0391]: cycle detected when checking if `accept1::{constant#0}` is a trivial const
##[error]  --> /checkout/tests/ui/traits/const-traits/unsatisfied-const-trait-bound.rs:32:49
   |
LL | const fn accept1<T: [const] Trait>(_: Container<{ T::make() }>) {}
   |                                                 ^^^^^^^^^^^^^
   |
note: ...which requires building MIR for `accept1::{constant#0}`...
  --> /checkout/tests/ui/traits/const-traits/unsatisfied-const-trait-bound.rs:32:49
   |
LL | const fn accept1<T: [const] Trait>(_: Container<{ T::make() }>) {}
   |                                                 ^^^^^^^^^^^^^
note: ...which requires building an abstract representation for `accept1::{constant#0}`...
  --> /checkout/tests/ui/traits/const-traits/unsatisfied-const-trait-bound.rs:32:49
   |
LL | const fn accept1<T: [const] Trait>(_: Container<{ T::make() }>) {}
   |                                                 ^^^^^^^^^^^^^
note: ...which requires building THIR for `accept1::{constant#0}`...
  --> /checkout/tests/ui/traits/const-traits/unsatisfied-const-trait-bound.rs:32:49
   |
LL | const fn accept1<T: [const] Trait>(_: Container<{ T::make() }>) {}
   |                                                 ^^^^^^^^^^^^^
note: ...which requires type-checking `accept1::{constant#0}`...
  --> /checkout/tests/ui/traits/const-traits/unsatisfied-const-trait-bound.rs:32:49
   |
LL | const fn accept1<T: [const] Trait>(_: Container<{ T::make() }>) {}
   |                                                 ^^^^^^^^^^^^^
note: ...which requires computing normalized predicates of `accept1::{constant#0}`...
  --> /checkout/tests/ui/traits/const-traits/unsatisfied-const-trait-bound.rs:32:49
   |
LL | const fn accept1<T: [const] Trait>(_: Container<{ T::make() }>) {}
   |                                                 ^^^^^^^^^^^^^
note: ...which requires evaluating type-level constant...
  --> /checkout/tests/ui/traits/const-traits/unsatisfied-const-trait-bound.rs:32:49
   |
LL | const fn accept1<T: [const] Trait>(_: Container<{ T::make() }>) {}
   |                                                 ^^^^^^^^^^^^^
note: ...which requires const-evaluating + checking `accept1::{constant#0}`...
  --> /checkout/tests/ui/traits/const-traits/unsatisfied-const-trait-bound.rs:32:49
   |
LL | const fn accept1<T: [const] Trait>(_: Container<{ T::make() }>) {}
   |                                                 ^^^^^^^^^^^^^
   = note: ...which again requires checking if `accept1::{constant#0}` is a trivial const, completing the cycle
note: cycle used when const-evaluating + checking `accept1::{constant#0}`
  --> /checkout/tests/ui/traits/const-traits/unsatisfied-const-trait-bound.rs:32:49
   |
LL | const fn accept1<T: [const] Trait>(_: Container<{ T::make() }>) {}
   |                                                 ^^^^^^^^^^^^^
   = note: see https://rustc-dev-guide.rust-lang.org/overview.html#queries and https://rustc-dev-guide.rust-lang.org/query.html for more information

error: aborting due to 3 previous errors

---
---- [ui] tests/ui/traits/explicit-reference-cast.rs stdout ----
Saved the actual stderr to `/checkout/obj/build/aarch64-unknown-linux-gnu/test/ui/traits/explicit-reference-cast/explicit-reference-cast.stderr`
diff of stderr:

41    = note: required for `&PathBuf` to implement `Into<ToolB>`
42    = note: required for `ToolB` to implement `TryFrom<&PathBuf>`
43 
- error[E0277]: the trait bound `ToolB: From<&PathBuf>` is not satisfied
-   --> $DIR/explicit-reference-cast.rs:43:13
-    |
- LL |     let _ = ToolB::try_from(&path);
-    |             ^^^^^^^^^^^^^^^^^^^^^^ unsatisfied trait bound
-    |
-    = help: consider casting the `&PathBuf` value to `&Path`
- help: the trait `From<&PathBuf>` is not implemented for `ToolB`
-   --> $DIR/explicit-reference-cast.rs:23:1
-    |
- LL | pub struct ToolB(PathBuf);
-    | ^^^^^^^^^^^^^^^^
- help: the trait `TryFrom<&PathBuf>` is not implemented for `ToolB`
-       but trait `TryFrom<&Path>` is implemented for it
-   --> $DIR/explicit-reference-cast.rs:27:1
-    |
- LL | impl TryFrom<&Path> for ToolB {
-    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
-    = help: for that trait implementation, expected `Path`, found `PathBuf`
-    = note: required for `&PathBuf` to implement `Into<ToolB>`
-    = note: required for `ToolB` to implement `TryFrom<&PathBuf>`
- 
- error: aborting due to 3 previous errors
+ error: aborting due to 2 previous errors
67 
68 For more information about this error, try `rustc --explain E0277`.
---
To only update this specific test, also pass `--test-args traits/explicit-reference-cast.rs`

error: 1 errors occurred comparing output.
status: exit status: 1
command: env -u RUSTC_LOG_COLOR RUSTC_ICE="0" RUST_BACKTRACE="short" "/checkout/obj/build/aarch64-unknown-linux-gnu/stage2/bin/rustc" "/checkout/tests/ui/traits/explicit-reference-cast.rs" "-Zthreads=1" "-Zsimulate-remapped-rust-src-base=/rustc/FAKE_PREFIX" "-Ztranslate-remapped-path-to-local-path=no" "-Z" "ignore-directory-in-diagnostics-source-blocks=/cargo" "-Z" "ignore-directory-in-diagnostics-source-blocks=/checkout/vendor" "--sysroot" "/checkout/obj/build/aarch64-unknown-linux-gnu/stage2" "--target=aarch64-unknown-linux-gnu" "--check-cfg" "cfg(test,FALSE)" "--error-format" "json" "--json" "future-incompat" "-Ccodegen-units=1" "-Zui-testing" "-Zdeduplicate-diagnostics=no" "-Zwrite-long-types-to-disk=no" "-Cstrip=debuginfo" "--emit" "metadata" "-C" "prefer-dynamic" "--out-dir" "/checkout/obj/build/aarch64-unknown-linux-gnu/test/ui/traits/explicit-reference-cast" "-A" "unused" "-W" "unused_attributes" "-A" "internal_features" "-A" "incomplete_features" "-A" "unused_parens" "-A" "unused_braces" "-Crpath" "-Cdebuginfo=0" "-Lnative=/checkout/obj/build/aarch64-unknown-linux-gnu/native/rust-test-helpers"
stdout: none
--- stderr -------------------------------
error[E0277]: the trait bound `ToolA: From<&PathBuf>` is not satisfied
##[error]  --> /checkout/tests/ui/traits/explicit-reference-cast.rs:40:13
   |
LL |     let _ = ToolA::from(&path);
   |             ^^^^^ unsatisfied trait bound
   |
   = help: consider casting the `&PathBuf` value to `&Path`
help: the trait `From<&PathBuf>` is not implemented for `ToolA`
  --> /checkout/tests/ui/traits/explicit-reference-cast.rs:6:1
   |
LL | pub struct ToolA(PathBuf);
   | ^^^^^^^^^^^^^^^^
help: `ToolA` implements trait `From<T>`
  --> /checkout/tests/ui/traits/explicit-reference-cast.rs:9:1
   |
LL | impl From<&Path> for ToolA {
   | ^^^^^^^^^^^^^^^^^^^^^^^^^^ `From<&Path>`
...
LL | impl From<&str> for ToolA {
   | ^^^^^^^^^^^^^^^^^^^^^^^^^ `From<&str>`

error[E0277]: the trait bound `ToolB: TryFrom<&PathBuf>` is not satisfied
##[error]  --> /checkout/tests/ui/traits/explicit-reference-cast.rs:43:13
   |
LL |     let _ = ToolB::try_from(&path);
   |             ^^^^^ unsatisfied trait bound
   |
   = help: consider casting the `&PathBuf` value to `&Path`
help: the trait `From<&PathBuf>` is not implemented for `ToolB`
  --> /checkout/tests/ui/traits/explicit-reference-cast.rs:23:1
   |
LL | pub struct ToolB(PathBuf);
   | ^^^^^^^^^^^^^^^^
help: the trait `TryFrom<&PathBuf>` is not implemented for `ToolB`
      but trait `TryFrom<&Path>` is implemented for it
  --> /checkout/tests/ui/traits/explicit-reference-cast.rs:27:1
   |
LL | impl TryFrom<&Path> for ToolB {
   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
   = help: for that trait implementation, expected `Path`, found `PathBuf`
   = note: required for `&PathBuf` to implement `Into<ToolB>`
   = note: required for `ToolB` to implement `TryFrom<&PathBuf>`

error: aborting due to 2 previous errors

For more information about this error, try `rustc --explain E0277`.
------------------------------------------
---
110    |
111 LL | #[derive(Clone, Copy)]
-    |          ^^^^^ `i32` is not an iterator
+    |          ----- in this derive macro expansion
+ LL | struct Bar<T>(T, N, NotDefined, <i32 as Iterator>::Item, Vec<i32>, String);
+    |                                 ^^^^^^^^^^^^^^^^^^^^^^^ `i32` is not an iterator
113    |
114    = help: the trait `Iterator` is not implemented for `i32`
115 

116 error[E0277]: `i32` is not an iterator
-   --> $DIR/issue-50480.rs:12:33
+   --> $DIR/issue-50480.rs:11:10
118    |
119 LL | #[derive(Clone, Copy)]
-    |          ----- in this derive macro expansion
- LL | struct Bar<T>(T, N, NotDefined, <i32 as Iterator>::Item, Vec<i32>, String);
-    |                                 ^^^^^^^^^^^^^^^^^^^^^^^ `i32` is not an iterator
+    |          ^^^^^ `i32` is not an iterator
123    |
124    = help: the trait `Iterator` is not implemented for `i32`
125 

Note: some mismatched output was normalized before being compared
-   --> /checkout/tests/ui/traits/issue-50480.rs:12:33
-   --> /checkout/tests/ui/traits/issue-50480.rs:11:10
+   --> $DIR/issue-50480.rs:12:33
+    |          ----- in this derive macro expansion
+ LL | struct Bar<T>(T, N, NotDefined, <i32 as Iterator>::Item, Vec<i32>, String);
+    |                                 ^^^^^^^^^^^^^^^^^^^^^^^ `i32` is not an iterator
+   --> $DIR/issue-50480.rs:11:10
+    |          ^^^^^ `i32` is not an iterator


The actual stderr differed from the expected stderr
To update references, rerun the tests and pass the `--bless` flag
To only update this specific test, also pass `--test-args traits/issue-50480.rs`

error: 1 errors occurred comparing output.
status: exit status: 1
command: env -u RUSTC_LOG_COLOR RUSTC_ICE="0" RUST_BACKTRACE="short" "/checkout/obj/build/aarch64-unknown-linux-gnu/stage2/bin/rustc" "/checkout/tests/ui/traits/issue-50480.rs" "-Zthreads=1" "-Zsimulate-remapped-rust-src-base=/rustc/FAKE_PREFIX" "-Ztranslate-remapped-path-to-local-path=no" "-Z" "ignore-directory-in-diagnostics-source-blocks=/cargo" "-Z" "ignore-directory-in-diagnostics-source-blocks=/checkout/vendor" "--sysroot" "/checkout/obj/build/aarch64-unknown-linux-gnu/stage2" "--target=aarch64-unknown-linux-gnu" "--check-cfg" "cfg(test,FALSE)" "--error-format" "json" "--json" "future-incompat" "-Ccodegen-units=1" "-Zui-testing" "-Zdeduplicate-diagnostics=no" "-Zwrite-long-types-to-disk=no" "-Cstrip=debuginfo" "--emit" "metadata" "-C" "prefer-dynamic" "--out-dir" "/checkout/obj/build/aarch64-unknown-linux-gnu/test/ui/traits/issue-50480" "-A" "unused" "-W" "unused_attributes" "-A" "internal_features" "-A" "incomplete_features" "-A" "unused_parens" "-A" "unused_braces" "-Crpath" "-Cdebuginfo=0" "-Lnative=/checkout/obj/build/aarch64-unknown-linux-gnu/native/rust-test-helpers"
stdout: none
--- stderr -------------------------------
error[E0425]: cannot find type `N` in this scope
##[error]  --> /checkout/tests/ui/traits/issue-50480.rs:2:12
   |
LL | struct Foo(N, NotDefined, <i32 as Iterator>::Item, Vec<i32>, String);
   |            ^ not found in this scope
   |
help: you might be missing a type parameter
   |
LL | struct Foo<N>(N, NotDefined, <i32 as Iterator>::Item, Vec<i32>, String);
   |           +++

error[E0425]: cannot find type `NotDefined` in this scope
##[error]  --> /checkout/tests/ui/traits/issue-50480.rs:2:15
   |
LL | struct Foo(N, NotDefined, <i32 as Iterator>::Item, Vec<i32>, String);
   |               ^^^^^^^^^^ not found in this scope

error[E0425]: cannot find type `N` in this scope
##[error]  --> /checkout/tests/ui/traits/issue-50480.rs:2:12
   |
LL | struct Foo(N, NotDefined, <i32 as Iterator>::Item, Vec<i32>, String);
   |            ^ not found in this scope
   |
help: you might be missing a type parameter
   |
LL | struct Foo<N>(N, NotDefined, <i32 as Iterator>::Item, Vec<i32>, String);
   |           +++

error[E0425]: cannot find type `NotDefined` in this scope
##[error]  --> /checkout/tests/ui/traits/issue-50480.rs:2:15
   |
LL | struct Foo(N, NotDefined, <i32 as Iterator>::Item, Vec<i32>, String);
   |               ^^^^^^^^^^ not found in this scope
   |
help: you might be missing a type parameter
   |
LL | struct Foo<NotDefined>(N, NotDefined, <i32 as Iterator>::Item, Vec<i32>, String);
   |           ++++++++++++

error[E0425]: cannot find type `N` in this scope
##[error]  --> /checkout/tests/ui/traits/issue-50480.rs:12:18
   |
LL | struct Bar<T>(T, N, NotDefined, <i32 as Iterator>::Item, Vec<i32>, String);
   |            -     ^
   |            |
   |            similarly named type parameter `T` defined here
   |
help: a type parameter with a similar name exists
   |
LL - struct Bar<T>(T, N, NotDefined, <i32 as Iterator>::Item, Vec<i32>, String);
LL + struct Bar<T>(T, T, NotDefined, <i32 as Iterator>::Item, Vec<i32>, String);
   |
help: you might be missing a type parameter
   |
LL | struct Bar<T, N>(T, N, NotDefined, <i32 as Iterator>::Item, Vec<i32>, String);
   |             +++

error[E0425]: cannot find type `NotDefined` in this scope
##[error]  --> /checkout/tests/ui/traits/issue-50480.rs:12:21
   |
LL | struct Bar<T>(T, N, NotDefined, <i32 as Iterator>::Item, Vec<i32>, String);
   |                     ^^^^^^^^^^ not found in this scope

error[E0277]: `i32` is not an iterator
##[error]  --> /checkout/tests/ui/traits/issue-50480.rs:2:27
   |
LL | struct Foo(N, NotDefined, <i32 as Iterator>::Item, Vec<i32>, String);
   |                           ^^^^^^^^^^^^^^^^^^^^^^^ `i32` is not an iterator
   |
   = help: the trait `Iterator` is not implemented for `i32`

error[E0204]: the trait `Copy` cannot be implemented for this type
##[error]  --> /checkout/tests/ui/traits/issue-50480.rs:2:8
   |
LL | #[derive(Clone, Copy)]
   |                 ---- in this derive macro expansion
LL | struct Foo(N, NotDefined, <i32 as Iterator>::Item, Vec<i32>, String);
   |        ^^^                                         --------  ------ this field does not implement `Copy`
   |                                                    |
   |                                                    this field does not implement `Copy`

error[E0204]: the trait `Copy` cannot be implemented for this type
##[error]  --> /checkout/tests/ui/traits/issue-50480.rs:12:8
   |
LL | #[derive(Clone, Copy)] //~ ERROR `i32` is not an iterator
   |                 ---- in this derive macro expansion
LL | struct Bar<T>(T, N, NotDefined, <i32 as Iterator>::Item, Vec<i32>, String);
   |        ^^^                                               --------  ------ this field does not implement `Copy`
   |                                                          |
   |                                                          this field does not implement `Copy`

error[E0277]: `i32` is not an iterator
##[error]  --> /checkout/tests/ui/traits/issue-50480.rs:12:33
   |
LL | struct Bar<T>(T, N, NotDefined, <i32 as Iterator>::Item, Vec<i32>, String);
   |                                 ^^^^^^^^^^^^^^^^^^^^^^^ `i32` is not an iterator
   |
   = help: the trait `Iterator` is not implemented for `i32`

error[E0277]: `i32` is not an iterator
##[error]  --> /checkout/tests/ui/traits/issue-50480.rs:2:28
   |
LL | struct Foo(N, NotDefined, <i32 as Iterator>::Item, Vec<i32>, String);
   |                            ^^^ `i32` is not an iterator
   |
   = help: the trait `Iterator` is not implemented for `i32`

error[E0277]: `i32` is not an iterator
##[error]  --> /checkout/tests/ui/traits/issue-50480.rs:12:33
   |
LL | #[derive(Clone, Copy)] //~ ERROR `i32` is not an iterator
   |          ----- in this derive macro expansion
LL | struct Bar<T>(T, N, NotDefined, <i32 as Iterator>::Item, Vec<i32>, String);
   |                                 ^^^^^^^^^^^^^^^^^^^^^^^ `i32` is not an iterator
   |
   = help: the trait `Iterator` is not implemented for `i32`

error[E0277]: `i32` is not an iterator
##[error]  --> /checkout/tests/ui/traits/issue-50480.rs:11:10
   |
LL | #[derive(Clone, Copy)] //~ ERROR `i32` is not an iterator
   |          ^^^^^ `i32` is not an iterator
   |
   = help: the trait `Iterator` is not implemented for `i32`

error: aborting due to 13 previous errors

---
diff of stderr:

- error[E0275]: overflow evaluating the requirement `String: Copy`
-   --> $DIR/alias-bound-unsound.rs:22:38
+ error[E0275]: overflow evaluating the requirement `<() as Foo>::Item == _`
+   --> $DIR/alias-bound-unsound.rs:22:5
3    |
4 LL |     type Item = String where String: Copy;
-    |                                      ^^^^
+    |     ^^^^^^^^^
+ 
+ error[E0276]: impl has stricter requirements than trait
+   --> $DIR/alias-bound-unsound.rs:22:38
6    |
- note: the requirement `String: Copy` appears on the `impl`'s associated type `Item` but not on the corresponding trait's associated type
-   --> $DIR/alias-bound-unsound.rs:12:10
-    |
- LL | trait Foo {
-    |       --- in this trait
12 LL |     type Item: Copy
-    |          ^^^^ this trait's associated type doesn't have the requirement `String: Copy`
+    |     --------------- definition of `Item` from trait
+ ...
+ LL |     type Item = String where String: Copy;
+    |                                      ^^^^ impl has extra requirement `String: Copy`
14 
- error[E0275]: overflow evaluating the requirement `<() as Foo>::Item == String`
-   --> $DIR/alias-bound-unsound.rs:28:22
+ error[E0275]: overflow evaluating the requirement `<() as Foo>::Item == _`
+   --> $DIR/alias-bound-unsound.rs:28:43
17    |
18 LL |     let _ = identity(<() as Foo>::copy_me(&x));
-    |                      ^^^^^^^^^^^^^^^^^^^^^^^^
+    |                                           ^^
20 
21 error[E0275]: overflow evaluating the requirement `<() as Foo>::Item == _`
22   --> $DIR/alias-bound-unsound.rs:28:22

23    |
24 LL |     let _ = identity(<() as Foo>::copy_me(&x));
-    |                      ^^^^^^^^^^^^^^^^^^^^^^^^
+    |                      ^^^^^^^^^^^^^^^^^^^^
26 
- error[E0275]: overflow evaluating the requirement `<() as Foo>::Item == _`
-   --> $DIR/alias-bound-unsound.rs:28:43
-    |
- LL |     let _ = identity(<() as Foo>::copy_me(&x));
-    |                                           ^^
- 
- error[E0275]: overflow evaluating the requirement `<() as Foo>::Item == _`
+ error[E0275]: overflow evaluating the requirement `<() as Foo>::Item == String`
34   --> $DIR/alias-bound-unsound.rs:28:22
35    |
36 LL |     let _ = identity(<() as Foo>::copy_me(&x));

37    |                      ^^^^^^^^^^^^^^^^^^^^^^^^
-    |
-    = note: duplicate diagnostic emitted due to `-Z deduplicate-diagnostics=no`
40 
---
Note: some mismatched output was normalized before being compared
-   --> /checkout/tests/ui/traits/next-solver/alias-bound-unsound.rs:22:5
-   --> /checkout/tests/ui/traits/next-solver/alias-bound-unsound.rs:22:38
-   --> /checkout/tests/ui/traits/next-solver/alias-bound-unsound.rs:28:43
+ error[E0275]: overflow evaluating the requirement `<() as Foo>::Item == _`
+   --> $DIR/alias-bound-unsound.rs:22:5
+    |     ^^^^^^^^^
+ 
+ error[E0276]: impl has stricter requirements than trait
+   --> $DIR/alias-bound-unsound.rs:22:38
+    |     --------------- definition of `Item` from trait
+ ...
+ LL |     type Item = String where String: Copy;
+    |                                      ^^^^ impl has extra requirement `String: Copy`
+ error[E0275]: overflow evaluating the requirement `<() as Foo>::Item == _`
+   --> $DIR/alias-bound-unsound.rs:28:43
+    |                                           ^^
+    |                      ^^^^^^^^^^^^^^^^^^^^
+ error[E0275]: overflow evaluating the requirement `<() as Foo>::Item == String`
+ Some errors have detailed explanations: E0275, E0276.
+ For more information about an error, try `rustc --explain E0275`.


The actual stderr differed from the expected stderr
To update references, rerun the tests and pass the `--bless` flag
To only update this specific test, also pass `--test-args traits/next-solver/alias-bound-unsound.rs`

error: 1 errors occurred comparing output.
status: exit status: 1
command: env -u RUSTC_LOG_COLOR RUSTC_ICE="0" RUST_BACKTRACE="short" "/checkout/obj/build/aarch64-unknown-linux-gnu/stage2/bin/rustc" "/checkout/tests/ui/traits/next-solver/alias-bound-unsound.rs" "-Zthreads=1" "-Zsimulate-remapped-rust-src-base=/rustc/FAKE_PREFIX" "-Ztranslate-remapped-path-to-local-path=no" "-Z" "ignore-directory-in-diagnostics-source-blocks=/cargo" "-Z" "ignore-directory-in-diagnostics-source-blocks=/checkout/vendor" "--sysroot" "/checkout/obj/build/aarch64-unknown-linux-gnu/stage2" "--target=aarch64-unknown-linux-gnu" "--check-cfg" "cfg(test,FALSE)" "--error-format" "json" "--json" "future-incompat" "-Ccodegen-units=1" "-Zui-testing" "-Zdeduplicate-diagnostics=no" "-Zwrite-long-types-to-disk=no" "-Cstrip=debuginfo" "--emit" "metadata" "-C" "prefer-dynamic" "--out-dir" "/checkout/obj/build/aarch64-unknown-linux-gnu/test/ui/traits/next-solver/alias-bound-unsound" "-A" "unused" "-W" "unused_attributes" "-A" "internal_features" "-A" "incomplete_features" "-A" "unused_parens" "-A" "unused_braces" "-Crpath" "-Cdebuginfo=0" "-Lnative=/checkout/obj/build/aarch64-unknown-linux-gnu/native/rust-test-helpers" "-Znext-solver"
stdout: none
--- stderr -------------------------------
error[E0275]: overflow evaluating the requirement `<() as Foo>::Item == _`
##[error]  --> /checkout/tests/ui/traits/next-solver/alias-bound-unsound.rs:22:5
   |
LL |     type Item = String where String: Copy;
   |     ^^^^^^^^^

---
...
LL |     type Item = String where String: Copy;
   |                                      ^^^^ impl has extra requirement `String: Copy`

error[E0275]: overflow evaluating the requirement `<() as Foo>::Item == _`
##[error]  --> /checkout/tests/ui/traits/next-solver/alias-bound-unsound.rs:28:43
   |
LL |     let _ = identity(<() as Foo>::copy_me(&x));
   |                                           ^^

error[E0275]: overflow evaluating the requirement `<() as Foo>::Item == _`
##[error]  --> /checkout/tests/ui/traits/next-solver/alias-bound-unsound.rs:28:22
   |
LL |     let _ = identity(<() as Foo>::copy_me(&x));
   |                      ^^^^^^^^^^^^^^^^^^^^

error[E0275]: overflow evaluating the requirement `<() as Foo>::Item == String`
##[error]  --> /checkout/tests/ui/traits/next-solver/alias-bound-unsound.rs:28:22
   |
LL |     let _ = identity(<() as Foo>::copy_me(&x));
   |                      ^^^^^^^^^^^^^^^^^^^^^^^^

error: aborting due to 5 previous errors

Some errors have detailed explanations: E0275, E0276.
For more information about an error, try `rustc --explain E0275`.
------------------------------------------

---- [ui] tests/ui/traits/next-solver/alias-bound-unsound.rs stdout end ----
---- [ui] tests/ui/traits/next-solver/assembly/ambiguity-due-to-uniquification-4.rs#next stdout ----
Saved the actual stderr to `/checkout/obj/build/aarch64-unknown-linux-gnu/test/ui/traits/next-solver/assembly/ambiguity-due-to-uniquification-4.next/ambiguity-due-to-uniquification-4.next.stderr`
diff of stderr:

- error[E0284]: type annotations needed: cannot normalize `<T as Trait<'_>>::Type`
-   --> $DIR/ambiguity-due-to-uniquification-4.rs:17:44
+ error[E0282]: type annotations needed
+   --> $DIR/ambiguity-due-to-uniquification-4.rs:17:47
3    |
4 LL | pub fn f<'a, 'b, T: Trait<'a> + Trait<'b>>(v: <T as Trait<'a>>::Type) {}
-    |                                            ^ cannot normalize `<T as Trait<'_>>::Type`
+    |                                               ^^^^^^^^^^^^^^^^^^^^^^ cannot infer type for associated type `<T as Trait<'_>>::Type`
6 
7 error: aborting due to 1 previous error
8 

- For more information about this error, try `rustc --explain E0284`.
---
To only update this specific test, also pass `--test-args traits/next-solver/assembly/ambiguity-due-to-uniquification-4.rs`

error in revision `next`: 1 errors occurred comparing output.
status: exit status: 1
command: env -u RUSTC_LOG_COLOR RUSTC_ICE="0" RUST_BACKTRACE="short" "/checkout/obj/build/aarch64-unknown-linux-gnu/stage2/bin/rustc" "/checkout/tests/ui/traits/next-solver/assembly/ambiguity-due-to-uniquification-4.rs" "-Zthreads=1" "-Zsimulate-remapped-rust-src-base=/rustc/FAKE_PREFIX" "-Ztranslate-remapped-path-to-local-path=no" "-Z" "ignore-directory-in-diagnostics-source-blocks=/cargo" "-Z" "ignore-directory-in-diagnostics-source-blocks=/checkout/vendor" "--sysroot" "/checkout/obj/build/aarch64-unknown-linux-gnu/stage2" "--target=aarch64-unknown-linux-gnu" "--cfg" "next" "--check-cfg" "cfg(test,FALSE,current,next)" "--error-format" "json" "--json" "future-incompat" "-Ccodegen-units=1" "-Zui-testing" "-Zdeduplicate-diagnostics=no" "-Zwrite-long-types-to-disk=no" "-Cstrip=debuginfo" "--emit" "metadata" "-C" "prefer-dynamic" "--out-dir" "/checkout/obj/build/aarch64-unknown-linux-gnu/test/ui/traits/next-solver/assembly/ambiguity-due-to-uniquification-4.next" "-A" "unused" "-W" "unused_attributes" "-A" "internal_features" "-A" "incomplete_features" "-A" "unused_parens" "-A" "unused_braces" "-Crpath" "-Cdebuginfo=0" "-Lnative=/checkout/obj/build/aarch64-unknown-linux-gnu/native/rust-test-helpers" "-Znext-solver"
stdout: none
--- stderr -------------------------------
error[E0282]: type annotations needed
##[error]  --> /checkout/tests/ui/traits/next-solver/assembly/ambiguity-due-to-uniquification-4.rs:17:47
   |
LL | pub fn f<'a, 'b, T: Trait<'a> + Trait<'b>>(v: <T as Trait<'a>>::Type) {}
   |                                               ^^^^^^^^^^^^^^^^^^^^^^ cannot infer type for associated type `<T as Trait<'_>>::Type`

error: aborting due to 1 previous error

For more information about this error, try `rustc --explain E0282`.
------------------------------------------
---
diff of stderr:

8    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ conflicting implementation
9    |
10    = note: overflow evaluating the requirement `<LocalTy as Overflow>::Assoc == _`
-    = note: overflow evaluating the requirement `<LocalTy as Overflow>::Assoc == _`
12    = help: consider increasing the recursion limit by adding a `#![recursion_limit = "256"]` attribute to your crate (`trait_ref_is_knowable_norm_overflow`)
13 
14 error: aborting due to 1 previous error


The actual stderr differed from the expected stderr
To update references, rerun the tests and pass the `--bless` flag
To only update this specific test, also pass `--test-args traits/next-solver/coherence/trait_ref_is_knowable-norm-overflow.rs`

error: 1 errors occurred comparing output.
status: exit status: 1
command: env -u RUSTC_LOG_COLOR RUSTC_ICE="0" RUST_BACKTRACE="short" "/checkout/obj/build/aarch64-unknown-linux-gnu/stage2/bin/rustc" "/checkout/tests/ui/traits/next-solver/coherence/trait_ref_is_knowable-norm-overflow.rs" "-Zthreads=1" "-Zsimulate-remapped-rust-src-base=/rustc/FAKE_PREFIX" "-Ztranslate-remapped-path-to-local-path=no" "-Z" "ignore-directory-in-diagnostics-source-blocks=/cargo" "-Z" "ignore-directory-in-diagnostics-source-blocks=/checkout/vendor" "--sysroot" "/checkout/obj/build/aarch64-unknown-linux-gnu/stage2" "--target=aarch64-unknown-linux-gnu" "--check-cfg" "cfg(test,FALSE)" "--error-format" "json" "--json" "future-incompat" "-Ccodegen-units=1" "-Zui-testing" "-Zdeduplicate-diagnostics=no" "-Zwrite-long-types-to-disk=no" "-Cstrip=debuginfo" "--emit" "metadata" "-C" "prefer-dynamic" "--out-dir" "/checkout/obj/build/aarch64-unknown-linux-gnu/test/ui/traits/next-solver/coherence/trait_ref_is_knowable-norm-overflow" "-A" "unused" "-W" "unused_attributes" "-A" "internal_features" "-A" "incomplete_features" "-A" "unused_parens" "-A" "unused_braces" "-Crpath" "-Cdebuginfo=0" "-Lnative=/checkout/obj/build/aarch64-unknown-linux-gnu/native/rust-test-helpers" "-Znext-solver"
stdout: none
--- stderr -------------------------------
error[E0119]: conflicting implementations of trait `Trait`
##[error]  --> /checkout/tests/ui/traits/next-solver/coherence/trait_ref_is_knowable-norm-overflow.rs:20:1
   |
LL | impl<T: Copy> Trait for T {}
   | ------------------------- first implementation here
LL | struct LocalTy;
LL | impl Trait for <LocalTy as Overflow>::Assoc {}
   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ conflicting implementation
   |
   = note: overflow evaluating the requirement `<LocalTy as Overflow>::Assoc == _`
   = help: consider increasing the recursion limit by adding a `#![recursion_limit = "256"]` attribute to your crate (`trait_ref_is_knowable_norm_overflow`)

error: aborting due to 1 previous error

For more information about this error, try `rustc --explain E0119`.
------------------------------------------

---- [ui] tests/ui/traits/next-solver/coherence/trait_ref_is_knowable-norm-overflow.rs stdout end ----
---- [ui] tests/ui/traits/next-solver/cycles/coinduction/item-bound-via-impl-where-clause.rs#next stdout ----
Saved the actual stderr to `/checkout/obj/build/aarch64-unknown-linux-gnu/test/ui/traits/next-solver/cycles/coinduction/item-bound-via-impl-where-clause.next/item-bound-via-impl-where-clause.next.stderr`
diff of stderr:

14   --> $DIR/item-bound-via-impl-where-clause.rs:31:21
15    |
16 LL |     let s: String = transmute::<_, String>(vec![65_u8, 66, 67]);
-    |                     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+    |                     ^^^^^^^^^^^^^^^^^^^^^^
18 
19 error[E0275]: overflow evaluating the requirement `<Vec<u8> as Trait<String>>::Proof == _`
20   --> $DIR/item-bound-via-impl-where-clause.rs:31:21

21    |
22 LL |     let s: String = transmute::<_, String>(vec![65_u8, 66, 67]);
23    |                     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
-    |
-    = note: duplicate diagnostic emitted due to `-Z deduplicate-diagnostics=no`
26 
27 error: aborting due to 3 previous errors
---
To only update this specific test, also pass `--test-args traits/next-solver/cycles/coinduction/item-bound-via-impl-where-clause.rs`

error in revision `next`: 1 errors occurred comparing output.
status: exit status: 1
command: env -u RUSTC_LOG_COLOR RUSTC_ICE="0" RUST_BACKTRACE="short" "/checkout/obj/build/aarch64-unknown-linux-gnu/stage2/bin/rustc" "/checkout/tests/ui/traits/next-solver/cycles/coinduction/item-bound-via-impl-where-clause.rs" "-Zthreads=1" "-Zsimulate-remapped-rust-src-base=/rustc/FAKE_PREFIX" "-Ztranslate-remapped-path-to-local-path=no" "-Z" "ignore-directory-in-diagnostics-source-blocks=/cargo" "-Z" "ignore-directory-in-diagnostics-source-blocks=/checkout/vendor" "--sysroot" "/checkout/obj/build/aarch64-unknown-linux-gnu/stage2" "--target=aarch64-unknown-linux-gnu" "--cfg" "next" "--check-cfg" "cfg(test,FALSE,current,next)" "--error-format" "json" "--json" "future-incompat" "-Ccodegen-units=1" "-Zui-testing" "-Zdeduplicate-diagnostics=no" "-Zwrite-long-types-to-disk=no" "-Cstrip=debuginfo" "--emit" "metadata" "-C" "prefer-dynamic" "--out-dir" "/checkout/obj/build/aarch64-unknown-linux-gnu/test/ui/traits/next-solver/cycles/coinduction/item-bound-via-impl-where-clause.next" "-A" "unused" "-W" "unused_attributes" "-A" "internal_features" "-A" "incomplete_features" "-A" "unused_parens" "-A" "unused_braces" "-Crpath" "-Cdebuginfo=0" "-Lnative=/checkout/obj/build/aarch64-unknown-linux-gnu/native/rust-test-helpers" "-Znext-solver"
stdout: none
--- stderr -------------------------------
error[E0275]: overflow evaluating the requirement `Vec<u8>: Trait<String>`
##[error]  --> /checkout/tests/ui/traits/next-solver/cycles/coinduction/item-bound-via-impl-where-clause.rs:31:33
   |
LL |     let s: String = transmute::<_, String>(vec![65_u8, 66, 67]);
   |                                 ^
   |
note: required by a bound in `transmute`
  --> /checkout/tests/ui/traits/next-solver/cycles/coinduction/item-bound-via-impl-where-clause.rs:29:17
   |
LL | fn transmute<L: Trait<R>, R>(r: L) -> <L::Proof as Trait<R>>::Proof { r }
   |                 ^^^^^^^^ required by this bound in `transmute`

error[E0275]: overflow evaluating the requirement `<Vec<u8> as Trait<String>>::Proof == _`
##[error]  --> /checkout/tests/ui/traits/next-solver/cycles/coinduction/item-bound-via-impl-where-clause.rs:31:21
   |
LL |     let s: String = transmute::<_, String>(vec![65_u8, 66, 67]);
   |                     ^^^^^^^^^^^^^^^^^^^^^^

error[E0275]: overflow evaluating the requirement `<Vec<u8> as Trait<String>>::Proof == _`
##[error]  --> /checkout/tests/ui/traits/next-solver/cycles/coinduction/item-bound-via-impl-where-clause.rs:31:21
   |
LL |     let s: String = transmute::<_, String>(vec![65_u8, 66, 67]);
   |                     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^

error: aborting due to 3 previous errors

For more information about this error, try `rustc --explain E0275`.
---
To only update this specific test, also pass `--test-args traits/next-solver/cycles/normalizes-to-is-not-productive.rs`

error: 1 errors occurred comparing output.
status: exit status: 1
command: env -u RUSTC_LOG_COLOR RUSTC_ICE="0" RUST_BACKTRACE="short" "/checkout/obj/build/aarch64-unknown-linux-gnu/stage2/bin/rustc" "/checkout/tests/ui/traits/next-solver/cycles/normalizes-to-is-not-productive.rs" "-Zthreads=1" "-Zsimulate-remapped-rust-src-base=/rustc/FAKE_PREFIX" "-Ztranslate-remapped-path-to-local-path=no" "-Z" "ignore-directory-in-diagnostics-source-blocks=/cargo" "-Z" "ignore-directory-in-diagnostics-source-blocks=/checkout/vendor" "--sysroot" "/checkout/obj/build/aarch64-unknown-linux-gnu/stage2" "--target=aarch64-unknown-linux-gnu" "--check-cfg" "cfg(test,FALSE)" "--error-format" "json" "--json" "future-incompat" "-Ccodegen-units=1" "-Zui-testing" "-Zdeduplicate-diagnostics=no" "-Zwrite-long-types-to-disk=no" "-Cstrip=debuginfo" "--emit" "metadata" "-C" "prefer-dynamic" "--out-dir" "/checkout/obj/build/aarch64-unknown-linux-gnu/test/ui/traits/next-solver/cycles/normalizes-to-is-not-productive" "-A" "unused" "-W" "unused_attributes" "-A" "internal_features" "-A" "incomplete_features" "-A" "unused_parens" "-A" "unused_braces" "-Crpath" "-Cdebuginfo=0" "-Lnative=/checkout/obj/build/aarch64-unknown-linux-gnu/native/rust-test-helpers" "-Znext-solver"
stdout: none
--- stderr -------------------------------
error[E0277]: the trait bound `Foo: Bound` is not satisfied
##[error]  --> /checkout/tests/ui/traits/next-solver/cycles/normalizes-to-is-not-productive.rs:40:1
   |
---
---- [ui] tests/ui/traits/next-solver/dyn-incompatibility.rs stdout ----
Saved the actual stderr to `/checkout/obj/build/aarch64-unknown-linux-gnu/test/ui/traits/next-solver/dyn-incompatibility/dyn-incompatibility.stderr`
diff of stderr:

15 LL | pub fn copy_any<T: std::marker::Copy>(t: &T) -> T {
16    |                  +++++++++++++++++++
17 
- error[E0277]: the trait bound `T: Copy` is not satisfied in `dyn Setup<From = T>`
-   --> $DIR/dyn-incompatibility.rs:12:31
-    |
- LL |     copy::<dyn Setup<From=T>>(t)
-    |                               ^ within `dyn Setup<From = T>`, the trait `Copy` is not implemented for `T`
-    |
-    = note: required because it appears within the type `dyn Setup<From = T>`
- help: consider restricting type parameter `T` with trait `Copy`
-    |
- LL | pub fn copy_any<T: std::marker::Copy>(t: &T) -> T {
-    |                  +++++++++++++++++++
- 
- error[E0277]: the trait bound `T: Copy` is not satisfied in `dyn Setup<From = T>`
-   --> $DIR/dyn-incompatibility.rs:12:5
-    |
- LL |     copy::<dyn Setup<From=T>>(t)
-    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^ within `dyn Setup<From = T>`, the trait `Copy` is not implemented for `T`
-    |
-    = note: required because it appears within the type `dyn Setup<From = T>`
- help: consider restricting type parameter `T` with trait `Copy`
-    |
- LL | pub fn copy_any<T: std::marker::Copy>(t: &T) -> T {
-    |                  +++++++++++++++++++
- 
- error: aborting due to 3 previous errors
+ error: aborting due to 1 previous error
43 
---
To only update this specific test, also pass `--test-args traits/next-solver/dyn-incompatibility.rs`

error: 1 errors occurred comparing output.
status: exit status: 1
command: env -u RUSTC_LOG_COLOR RUSTC_ICE="0" RUST_BACKTRACE="short" "/checkout/obj/build/aarch64-unknown-linux-gnu/stage2/bin/rustc" "/checkout/tests/ui/traits/next-solver/dyn-incompatibility.rs" "-Zthreads=1" "-Zsimulate-remapped-rust-src-base=/rustc/FAKE_PREFIX" "-Ztranslate-remapped-path-to-local-path=no" "-Z" "ignore-directory-in-diagnostics-source-blocks=/cargo" "-Z" "ignore-directory-in-diagnostics-source-blocks=/checkout/vendor" "--sysroot" "/checkout/obj/build/aarch64-unknown-linux-gnu/stage2" "--target=aarch64-unknown-linux-gnu" "--check-cfg" "cfg(test,FALSE)" "--error-format" "json" "--json" "future-incompat" "-Ccodegen-units=1" "-Zui-testing" "-Zdeduplicate-diagnostics=no" "-Zwrite-long-types-to-disk=no" "-Cstrip=debuginfo" "--emit" "metadata" "-C" "prefer-dynamic" "--out-dir" "/checkout/obj/build/aarch64-unknown-linux-gnu/test/ui/traits/next-solver/dyn-incompatibility" "-A" "unused" "-W" "unused_attributes" "-A" "internal_features" "-A" "incomplete_features" "-A" "unused_parens" "-A" "unused_braces" "-Crpath" "-Cdebuginfo=0" "-Lnative=/checkout/obj/build/aarch64-unknown-linux-gnu/native/rust-test-helpers" "-Znext-solver"
stdout: none
--- stderr -------------------------------
error[E0277]: the trait bound `T: Copy` is not satisfied in `dyn Setup<From = T>`
##[error]  --> /checkout/tests/ui/traits/next-solver/dyn-incompatibility.rs:12:12
   |
LL |     copy::<dyn Setup<From=T>>(t)
   |            ^^^^^^^^^^^^^^^^^ within `dyn Setup<From = T>`, the trait `Copy` is not implemented for `T`
   |
   = note: required because it appears within the type `dyn Setup<From = T>`
note: required by a bound in `copy`
  --> /checkout/tests/ui/traits/next-solver/dyn-incompatibility.rs:7:12
   |
LL | fn copy<U: Setup + ?Sized>(from: &U::From) -> U::From {
   |            ^^^^^ required by this bound in `copy`
help: consider restricting type parameter `T` with trait `Copy`
   |
LL | pub fn copy_any<T: std::marker::Copy>(t: &T) -> T {
   |                  +++++++++++++++++++

error: aborting due to 1 previous error

For more information about this error, try `rustc --explain E0277`.
------------------------------------------

---- [ui] tests/ui/traits/next-solver/dyn-incompatibility.rs stdout end ----
---- [ui] tests/ui/traits/next-solver/find-param-recursion-issue-152716.rs stdout ----
Saved the actual stderr to `/checkout/obj/build/aarch64-unknown-linux-gnu/test/ui/traits/next-solver/find-param-recursion-issue-152716/find-param-recursion-issue-152716.stderr`
diff of stderr:

- error[E0275]: overflow evaluating the requirement `(): Trait<for<'b> fn(<T as Proj<'b>>::Assoc)>`
+ error[E0277]: the trait bound `(): Trait<fn(fn(fn(for<'b> fn(<T as Proj<'b>>::Assoc))))>` is not satisfied
2   --> $DIR/find-param-recursion-issue-152716.rs:16:9
3    |
4 LL |     (): Trait<<T as Proj<'static>>::Assoc>

-    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ the trait `Trait<fn(fn(fn(for<'b> fn(<T as Proj<'b>>::Assoc))))>` is not implemented for `()`
6    |
-    = help: consider increasing the recursion limit by adding a `#![recursion_limit = "256"]` attribute to your crate (`find_param_recursion_issue_152716`)
+ help: this trait has no implementations, consider adding one
+   --> $DIR/find-param-recursion-issue-152716.rs:9:1
+    |
---
12 

Note: some mismatched output was normalized before being compared
-   --> /checkout/tests/ui/traits/next-solver/find-param-recursion-issue-152716.rs:9:1
+ error[E0277]: the trait bound `(): Trait<fn(fn(fn(for<'b> fn(<T as Proj<'b>>::Assoc))))>` is not satisfied
+    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ the trait `Trait<fn(fn(fn(for<'b> fn(<T as Proj<'b>>::Assoc))))>` is not implemented for `()`
+ help: this trait has no implementations, consider adding one
+   --> $DIR/find-param-recursion-issue-152716.rs:9:1
+    |
+ LL | trait Trait<T> {}
+    | ^^^^^^^^^^^^^^
+ For more information about this error, try `rustc --explain E0277`.
---
To only update this specific test, also pass `--test-args traits/next-solver/find-param-recursion-issue-152716.rs`

error: 1 errors occurred comparing output.
status: exit status: 1
command: env -u RUSTC_LOG_COLOR RUSTC_ICE="0" RUST_BACKTRACE="short" "/checkout/obj/build/aarch64-unknown-linux-gnu/stage2/bin/rustc" "/checkout/tests/ui/traits/next-solver/find-param-recursion-issue-152716.rs" "-Zthreads=1" "-Zsimulate-remapped-rust-src-base=/rustc/FAKE_PREFIX" "-Ztranslate-remapped-path-to-local-path=no" "-Z" "ignore-directory-in-diagnostics-source-blocks=/cargo" "-Z" "ignore-directory-in-diagnostics-source-blocks=/checkout/vendor" "--sysroot" "/checkout/obj/build/aarch64-unknown-linux-gnu/stage2" "--target=aarch64-unknown-linux-gnu" "--check-cfg" "cfg(test,FALSE)" "--error-format" "json" "--json" "future-incompat" "-Ccodegen-units=1" "-Zui-testing" "-Zdeduplicate-diagnostics=no" "-Zwrite-long-types-to-disk=no" "-Cstrip=debuginfo" "--emit" "metadata" "-C" "prefer-dynamic" "--out-dir" "/checkout/obj/build/aarch64-unknown-linux-gnu/test/ui/traits/next-solver/find-param-recursion-issue-152716" "-A" "unused" "-W" "unused_attributes" "-A" "internal_features" "-A" "incomplete_features" "-A" "unused_parens" "-A" "unused_braces" "-Crpath" "-Cdebuginfo=0" "-Lnative=/checkout/obj/build/aarch64-unknown-linux-gnu/native/rust-test-helpers" "-Znext-solver"
stdout: none
--- stderr -------------------------------
error[E0277]: the trait bound `(): Trait<fn(fn(fn(for<'b> fn(<T as Proj<'b>>::Assoc))))>` is not satisfied
##[error]  --> /checkout/tests/ui/traits/next-solver/find-param-recursion-issue-152716.rs:16:9
   |
LL |     (): Trait<<T as Proj<'static>>::Assoc>
   |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ the trait `Trait<fn(fn(fn(for<'b> fn(<T as Proj<'b>>::Assoc))))>` is not implemented for `()`
   |
help: this trait has no implementations, consider adding one
  --> /checkout/tests/ui/traits/next-solver/find-param-recursion-issue-152716.rs:9:1
   |
LL | trait Trait<T> {}
---
---- [ui] tests/ui/traits/next-solver/normalization-shadowing/is-global-norm-binius_field-regression.rs#next stdout ----

error in revision `next`: test compilation failed although it shouldn't!
status: exit status: 1
command: env -u RUSTC_LOG_COLOR RUSTC_ICE="0" RUST_BACKTRACE="short" "/checkout/obj/build/aarch64-unknown-linux-gnu/stage2/bin/rustc" "/checkout/tests/ui/traits/next-solver/normalization-shadowing/is-global-norm-binius_field-regression.rs" "-Zthreads=1" "-Zsimulate-remapped-rust-src-base=/rustc/FAKE_PREFIX" "-Ztranslate-remapped-path-to-local-path=no" "-Z" "ignore-directory-in-diagnostics-source-blocks=/cargo" "-Z" "ignore-directory-in-diagnostics-source-blocks=/checkout/vendor" "--sysroot" "/checkout/obj/build/aarch64-unknown-linux-gnu/stage2" "--target=aarch64-unknown-linux-gnu" "--cfg" "next" "--check-cfg" "cfg(test,FALSE,current,next)" "--error-format" "json" "--json" "future-incompat" "-Ccodegen-units=1" "-Zui-testing" "-Zdeduplicate-diagnostics=no" "-Zwrite-long-types-to-disk=no" "-Cstrip=debuginfo" "--emit" "metadata" "-C" "prefer-dynamic" "--out-dir" "/checkout/obj/build/aarch64-unknown-linux-gnu/test/ui/traits/next-solver/normalization-shadowing/is-global-norm-binius_field-regression.next" "-A" "unused" "-W" "unused_attributes" "-A" "internal_features" "-A" "incomplete_features" "-A" "unused_parens" "-A" "unused_braces" "-Crpath" "-Cdebuginfo=0" "-Lnative=/checkout/obj/build/aarch64-unknown-linux-gnu/native/rust-test-helpers" "-Znext-solver"
stdout: none
--- stderr -------------------------------
error[E0310]: the associated type `<Self as HasUnderlier>::Underlier` may not live long enough
##[error]  --> /checkout/tests/ui/traits/next-solver/normalization-shadowing/is-global-norm-binius_field-regression.rs:11:50
   |
LL | pub trait Field: Sized + HasUnderlier<Underlier: PackScalar<Self>> {}
   |                                                  ^^^^^^^^^^^^^^^^
   |                                                  |
   |                                                  the associated type `<Self as HasUnderlier>::Underlier` must be valid for the static lifetime...
   |                                                  ...so that the type `<Self as HasUnderlier>::Underlier` will meet its required lifetime bounds
   |
help: consider adding an explicit lifetime bound
   |
LL | pub trait Field: Sized + HasUnderlier<Underlier: PackScalar<Self>> where <Self as HasUnderlier>::Underlier: 'static {}
   |                                                                    ++++++++++++++++++++++++++++++++++++++++++++++++

error: aborting due to 1 previous error

For more information about this error, try `rustc --explain E0310`.
------------------------------------------

---- [ui] tests/ui/traits/next-solver/normalization-shadowing/is-global-norm-binius_field-regression.rs#next stdout end ----
---- [ui] tests/ui/traits/next-solver/normalize/normalize-param-env-1.rs stdout ----

error: test compilation failed although it shouldn't!
status: exit status: 1
command: env -u RUSTC_LOG_COLOR RUSTC_ICE="0" RUST_BACKTRACE="short" "/checkout/obj/build/aarch64-unknown-linux-gnu/stage2/bin/rustc" "/checkout/tests/ui/traits/next-solver/normalize/normalize-param-env-1.rs" "-Zthreads=1" "-Zsimulate-remapped-rust-src-base=/rustc/FAKE_PREFIX" "-Ztranslate-remapped-path-to-local-path=no" "-Z" "ignore-directory-in-diagnostics-source-blocks=/cargo" "-Z" "ignore-directory-in-diagnostics-source-blocks=/checkout/vendor" "--sysroot" "/checkout/obj/build/aarch64-unknown-linux-gnu/stage2" "--target=aarch64-unknown-linux-gnu" "--check-cfg" "cfg(test,FALSE)" "--error-format" "json" "--json" "future-incompat" "-Ccodegen-units=1" "-Zui-testing" "-Zdeduplicate-diagnostics=no" "-Zwrite-long-types-to-disk=no" "-Cstrip=debuginfo" "--emit" "metadata" "-C" "prefer-dynamic" "--out-dir" "/checkout/obj/build/aarch64-unknown-linux-gnu/test/ui/traits/next-solver/normalize/normalize-param-env-1" "-A" "unused" "-W" "unused_attributes" "-A" "internal_features" "-A" "incomplete_features" "-A" "unused_parens" "-A" "unused_braces" "-Crpath" "-Cdebuginfo=0" "-Lnative=/checkout/obj/build/aarch64-unknown-linux-gnu/native/rust-test-helpers" "-Znext-solver"
stdout: none
--- stderr -------------------------------
error[E0277]: the trait bound `T: Trait<()>` is not satisfied
##[error]  --> /checkout/tests/ui/traits/next-solver/normalize/normalize-param-env-1.rs:26:1
   |
---
------------------------------------------

---- [ui] tests/ui/traits/next-solver/normalize/normalize-param-env-1.rs stdout end ----
---- [ui] tests/ui/traits/next-solver/normalize/normalize-param-env-2.rs stdout ----
Saved the actual stderr to `/checkout/obj/build/aarch64-unknown-linux-gnu/test/ui/traits/next-solver/normalize/normalize-param-env-2/normalize-param-env-2.stderr`
diff of stderr:

- error[E0275]: overflow evaluating the requirement `<() as A<T>>::Assoc == _`
-   --> $DIR/normalize-param-env-2.rs:22:5
+ error[E0276]: impl has stricter requirements than trait
+   --> $DIR/normalize-param-env-2.rs:24:22
3    |
4 LL | /     fn f()
5 LL | |     where

6 LL | |         Self::Assoc: A<T>,
-    | |__________________________^
- 
- error[E0275]: overflow evaluating the requirement `<() as A<T>>::Assoc == _`
-   --> $DIR/normalize-param-env-2.rs:22:5
-    |
- LL | /     fn f()
- LL | |     where
- LL | |         Self::Assoc: A<T>,
-    | |__________________________^
-    |
-    = note: duplicate diagnostic emitted due to `-Z deduplicate-diagnostics=no`
- 
- error[E0275]: overflow evaluating the requirement `<() as A<T>>::Assoc == _`
-   --> $DIR/normalize-param-env-2.rs:24:22
-    |
- LL |         Self::Assoc: A<T>,
-    |                      ^^^^
- 
- error[E0283]: type annotations needed
-   --> $DIR/normalize-param-env-2.rs:24:22
-    |
- LL |         Self::Assoc: A<T>,
-    |                      ^^^^ cannot infer type
-    |
- note: multiple `impl`s or `where` clauses satisfying `_: A<T>` found
-   --> $DIR/normalize-param-env-2.rs:19:1
-    |
- LL | impl<T> A<T> for () {
-    | ^^^^^^^^^^^^^^^^^^^
+    | |__________________________- definition of `f` from trait
36 ...
- LL |         Self::Assoc: A<T>,
-    |                      ^^^^
- note: the requirement `_: A<T>` appears on the `impl`'s associated function `f` but not on the corresponding trait's associated function
-   --> $DIR/normalize-param-env-2.rs:12:8
-    |
- LL | trait A<T> {
-    |       - in this trait
- ...
- LL |     fn f()
-    |        ^ this trait's associated function doesn't have the requirement `_: A<T>`
+ LL |           Self::Assoc: A<T>,
+    |                        ^^^^ impl has extra requirement `<() as A<T>>::Assoc: A<T>`
47 
- error[E0275]: overflow evaluating the requirement `<() as A<T>>::Assoc == _`
+ error[E0277]: the trait bound `<() as A<T>>::Assoc: A<T>` is not satisfied
49   --> $DIR/normalize-param-env-2.rs:24:22
50    |
51 LL |         Self::Assoc: A<T>,

-    |                      ^^^^
+    |                      ^^^^ the trait `A<T>` is not implemented for `<() as A<T>>::Assoc`
53    |
- note: required by a bound in `A`
-   --> $DIR/normalize-param-env-2.rs:9:1
-    |
- LL | / trait A<T> {
- LL | |     type Assoc;
- LL | |
- LL | |     fn f()
- ...  |
- LL | | }
-    | |_^ required by this bound in `A`
- 
- error[E0275]: overflow evaluating the requirement `<() as A<T>>::Assoc == _`
-   --> $DIR/normalize-param-env-2.rs:24:22
-    |
- LL |         Self::Assoc: A<T>,
-    |                      ^^^^
-    |
---
-    |
- LL |         Self::Assoc: A<T>,
-    |                      ^^^^ cannot infer type
-    |
- note: multiple `impl`s or `where` clauses satisfying `_: A<T>` found
+ help: the trait `A<T>` is implemented for `()`
80   --> $DIR/normalize-param-env-2.rs:19:1
81    |
82 LL | impl<T> A<T> for () {

83    | ^^^^^^^^^^^^^^^^^^^
- ...
- LL |         Self::Assoc: A<T>,
-    |                      ^^^^
87 
- error[E0275]: overflow evaluating whether `<() as A<T>>::Assoc` is well-formed
-   --> $DIR/normalize-param-env-2.rs:24:22
+ error[E0277]: the trait bound `<() as A<T>>::Assoc: A<T>` is not satisfied
+   --> $DIR/normalize-param-env-2.rs:27:18
90    |
- LL |         Self::Assoc: A<T>,
-    |                      ^^^^
- 
- error[E0275]: overflow evaluating the requirement `(): A<T>`
-   --> $DIR/normalize-param-env-2.rs:27:10
-    |
97 LL |         <() as A<T>>::f();
-    |          ^^
- 
- error[E0275]: overflow evaluating the requirement `<() as A<T>>::Assoc == _`
-   --> $DIR/normalize-param-env-2.rs:27:9
+    |                  ^ the trait `A<T>` is not implemented for `<() as A<T>>::Assoc`
102    |
- LL |         <() as A<T>>::f();
-    |         ^^^^^^^^^^^^^^^^^
- 
- error[E0283]: type annotations needed
-   --> $DIR/normalize-param-env-2.rs:27:9
-    |
- LL |         <() as A<T>>::f();
-    |         ^^^^^^^^^^^^^^^^^ cannot infer type
-    |
- note: multiple `impl`s or `where` clauses satisfying `_: A<T>` found
+ help: the trait `A<T>` is implemented for `()`
113   --> $DIR/normalize-param-env-2.rs:19:1
114    |
115 LL | impl<T> A<T> for () {

116    | ^^^^^^^^^^^^^^^^^^^
---
-   --> /checkout/tests/ui/traits/next-solver/normalize/normalize-param-env-2.rs:24:22
-   --> /checkout/tests/ui/traits/next-solver/normalize/normalize-param-env-2.rs:27:18
+ error[E0276]: impl has stricter requirements than trait
+   --> $DIR/normalize-param-env-2.rs:24:22
+    | |__________________________- definition of `f` from trait
+ LL |           Self::Assoc: A<T>,
+    |                        ^^^^ impl has extra requirement `<() as A<T>>::Assoc: A<T>`
+ error[E0277]: the trait bound `<() as A<T>>::Assoc: A<T>` is not satisfied
+    |                      ^^^^ the trait `A<T>` is not implemented for `<() as A<T>>::Assoc`
+ help: the trait `A<T>` is implemented for `()`
+ error[E0277]: the trait bound `<() as A<T>>::Assoc: A<T>` is not satisfied
+   --> $DIR/normalize-param-env-2.rs:27:18
+    |                  ^ the trait `A<T>` is not implemented for `<() as A<T>>::Assoc`
+ help: the trait `A<T>` is implemented for `()`
+ error: aborting due to 3 previous errors
+ Some errors have detailed explanations: E0276, E0277.
+ For more information about an error, try `rustc --explain E0276`.


The actual stderr differed from the expected stderr
To update references, rerun the tests and pass the `--bless` flag
To only update this specific test, also pass `--test-args traits/next-solver/normalize/normalize-param-env-2.rs`

error: 1 errors occurred comparing output.
status: exit status: 1
command: env -u RUSTC_LOG_COLOR RUSTC_ICE="0" RUST_BACKTRACE="short" "/checkout/obj/build/aarch64-unknown-linux-gnu/stage2/bin/rustc" "/checkout/tests/ui/traits/next-solver/normalize/normalize-param-env-2.rs" "-Zthreads=1" "-Zsimulate-remapped-rust-src-base=/rustc/FAKE_PREFIX" "-Ztranslate-remapped-path-to-local-path=no" "-Z" "ignore-directory-in-diagnostics-source-blocks=/cargo" "-Z" "ignore-directory-in-diagnostics-source-blocks=/checkout/vendor" "--sysroot" "/checkout/obj/build/aarch64-unknown-linux-gnu/stage2" "--target=aarch64-unknown-linux-gnu" "--check-cfg" "cfg(test,FALSE)" "--error-format" "json" "--json" "future-incompat" "-Ccodegen-units=1" "-Zui-testing" "-Zdeduplicate-diagnostics=no" "-Zwrite-long-types-to-disk=no" "-Cstrip=debuginfo" "--emit" "metadata" "-C" "prefer-dynamic" "--out-dir" "/checkout/obj/build/aarch64-unknown-linux-gnu/test/ui/traits/next-solver/normalize/normalize-param-env-2" "-A" "unused" "-W" "unused_attributes" "-A" "internal_features" "-A" "incomplete_features" "-A" "unused_parens" "-A" "unused_braces" "-Crpath" "-Cdebuginfo=0" "-Lnative=/checkout/obj/build/aarch64-unknown-linux-gnu/native/rust-test-helpers" "-Znext-solver"
stdout: none
--- stderr -------------------------------
error[E0276]: impl has stricter requirements than trait
##[error]  --> /checkout/tests/ui/traits/next-solver/normalize/normalize-param-env-2.rs:24:22
   |
LL | /     fn f()
LL | |     where
LL | |         Self::Assoc: A<T>,
   | |__________________________- definition of `f` from trait
...
LL |           Self::Assoc: A<T>,
   |                        ^^^^ impl has extra requirement `<() as A<T>>::Assoc: A<T>`

error[E0277]: the trait bound `<() as A<T>>::Assoc: A<T>` is not satisfied
##[error]  --> /checkout/tests/ui/traits/next-solver/normalize/normalize-param-env-2.rs:24:22
   |
LL |         Self::Assoc: A<T>,
   |                      ^^^^ the trait `A<T>` is not implemented for `<() as A<T>>::Assoc`
   |
help: the trait `A<T>` is implemented for `()`
  --> /checkout/tests/ui/traits/next-solver/normalize/normalize-param-env-2.rs:19:1
   |
LL | impl<T> A<T> for () {
   | ^^^^^^^^^^^^^^^^^^^

error[E0277]: the trait bound `<() as A<T>>::Assoc: A<T>` is not satisfied
##[error]  --> /checkout/tests/ui/traits/next-solver/normalize/normalize-param-env-2.rs:27:18
   |
LL |         <() as A<T>>::f();
   |                  ^ the trait `A<T>` is not implemented for `<() as A<T>>::Assoc`
   |
help: the trait `A<T>` is implemented for `()`
  --> /checkout/tests/ui/traits/next-solver/normalize/normalize-param-env-2.rs:19:1
   |
LL | impl<T> A<T> for () {
   | ^^^^^^^^^^^^^^^^^^^
note: required by a bound in `A::f`
---
---- [ui] tests/ui/traits/next-solver/normalize/normalize-param-env-3.rs stdout ----

error: test compilation failed although it shouldn't!
status: exit status: 1
command: env -u RUSTC_LOG_COLOR RUSTC_ICE="0" RUST_BACKTRACE="short" "/checkout/obj/build/aarch64-unknown-linux-gnu/stage2/bin/rustc" "/checkout/tests/ui/traits/next-solver/normalize/normalize-param-env-3.rs" "-Zthreads=1" "-Zsimulate-remapped-rust-src-base=/rustc/FAKE_PREFIX" "-Ztranslate-remapped-path-to-local-path=no" "-Z" "ignore-directory-in-diagnostics-source-blocks=/cargo" "-Z" "ignore-directory-in-diagnostics-source-blocks=/checkout/vendor" "--sysroot" "/checkout/obj/build/aarch64-unknown-linux-gnu/stage2" "--target=aarch64-unknown-linux-gnu" "--check-cfg" "cfg(test,FALSE)" "--error-format" "json" "--json" "future-incompat" "-Ccodegen-units=1" "-Zui-testing" "-Zdeduplicate-diagnostics=no" "-Zwrite-long-types-to-disk=no" "-Cstrip=debuginfo" "--emit" "metadata" "-C" "prefer-dynamic" "--out-dir" "/checkout/obj/build/aarch64-unknown-linux-gnu/test/ui/traits/next-solver/normalize/normalize-param-env-3" "-A" "unused" "-W" "unused_attributes" "-A" "internal_features" "-A" "incomplete_features" "-A" "unused_parens" "-A" "unused_braces" "-Crpath" "-Cdebuginfo=0" "-Lnative=/checkout/obj/build/aarch64-unknown-linux-gnu/native/rust-test-helpers" "-Znext-solver"
stdout: none
--- stderr -------------------------------
error[E0277]: the trait bound `C: Channel<()>` is not satisfied
##[error]  --> /checkout/tests/ui/traits/next-solver/normalize/normalize-param-env-3.rs:22:5
   |
LL | /     fn send<C>()
LL | |     where
LL | |         C: Channel<Self::Msg>,
   | |______________________________^ the trait `Channel<()>` is not implemented for `C`

error[E0276]: impl has stricter requirements than trait
##[error]  --> /checkout/tests/ui/traits/next-solver/normalize/normalize-param-env-3.rs:24:12
   |
LL | /     fn send<C>()
LL | |     where
LL | |         C: Channel<Self::Msg>;
   | |______________________________- definition of `send` from trait
...
LL |           C: Channel<Self::Msg>,
   |              ^^^^^^^^^^^^^^^^^^ impl has extra requirement `C: Channel<()>`

error[E0277]: the trait bound `C: Channel<()>` is not satisfied
##[error]  --> /checkout/tests/ui/traits/next-solver/normalize/normalize-param-env-3.rs:22:5
   |
LL | /     fn send<C>()
LL | |     where
LL | |         C: Channel<Self::Msg>,
   | |______________________________^ the trait `Channel<()>` is not implemented for `C`
   |
   = note: duplicate diagnostic emitted due to `-Z deduplicate-diagnostics=no`

error[E0277]: the trait bound `C: Channel<()>` is not satisfied
##[error]  --> /checkout/tests/ui/traits/next-solver/normalize/normalize-param-env-3.rs:24:12
   |
LL |         C: Channel<Self::Msg>,
   |            ^^^^^^^^^^^^^^^^^^ the trait `Channel<()>` is not implemented for `C`
   |
note: required by a bound in `Channel`
  --> /checkout/tests/ui/traits/next-solver/normalize/normalize-param-env-3.rs:7:19
   |
LL | trait Channel<I>: GenericTrait<Self::T> {
   |                   ^^^^^^^^^^^^^^^^^^^^^ required by this bound in `Channel`

error: aborting due to 4 previous errors

Some errors have detailed explanations: E0276, E0277.
---
error in revision `next`: ui test did not emit an error
note: by default, ui tests are expected not to compile.
hint: use check-pass, build-pass, or run-pass directive to change this behavior.
status: exit status: 0
command: env -u RUSTC_LOG_COLOR RUSTC_ICE="0" RUST_BACKTRACE="short" "/checkout/obj/build/aarch64-unknown-linux-gnu/stage2/bin/rustc" "/checkout/tests/ui/traits/next-solver/normalize/normalize-param-env-4.rs" "-Zthreads=1" "-Zsimulate-remapped-rust-src-base=/rustc/FAKE_PREFIX" "-Ztranslate-remapped-path-to-local-path=no" "-Z" "ignore-directory-in-diagnostics-source-blocks=/cargo" "-Z" "ignore-directory-in-diagnostics-source-blocks=/checkout/vendor" "--sysroot" "/checkout/obj/build/aarch64-unknown-linux-gnu/stage2" "--target=aarch64-unknown-linux-gnu" "--cfg" "next" "--check-cfg" "cfg(test,FALSE,current,next)" "--error-format" "json" "--json" "future-incompat" "-Ccodegen-units=1" "-Zui-testing" "-Zdeduplicate-diagnostics=no" "-Zwrite-long-types-to-disk=no" "-Cstrip=debuginfo" "--emit" "metadata" "-C" "prefer-dynamic" "--out-dir" "/checkout/obj/build/aarch64-unknown-linux-gnu/test/ui/traits/next-solver/normalize/normalize-param-env-4.next" "-A" "unused" "-W" "unused_attributes" "-A" "internal_features" "-A" "incomplete_features" "-A" "unused_parens" "-A" "unused_braces" "-Crpath" "-Cdebuginfo=0" "-Lnative=/checkout/obj/build/aarch64-unknown-linux-gnu/native/rust-test-helpers" "-Znext-solver"
stdout: none
stderr: none

---- [ui] tests/ui/traits/next-solver/normalize/normalize-param-env-4.rs#next stdout end ----
---- [ui] tests/ui/traits/next-solver/stalled-coroutine-obligations.rs stdout ----
Saved the actual stderr to `/checkout/obj/build/aarch64-unknown-linux-gnu/test/ui/traits/next-solver/stalled-coroutine-obligations/stalled-coroutine-obligations.stderr`
diff of stderr:

29 LL |     let foo: T = async { a };
30    |                          ^ has type `False` which does not implement `Valid`
31 
- error[E0271]: type mismatch resolving `impl Future + Send == {async block@$DIR/stalled-coroutine-obligations.rs:41:9: 41:19}`
-   --> $DIR/stalled-coroutine-obligations.rs:39:43
+ error: future cannot be sent between threads safely
+   --> $DIR/stalled-coroutine-obligations.rs:41:9
34    |
- LL |     fn stalled_send(&self, b: *mut ()) -> impl Future + Send {
-    |                                           ^^^^^^^^^^^^^^^^^^ types differ
+ LL | /         async move {
+ LL | |             b
+ LL | |         }
+    | |_________^ future created by async block is not `Send`
+    |
+    = help: within `{async block@$DIR/stalled-coroutine-obligations.rs:41:9: 41:19}`, the trait `Send` is not implemented for `*mut ()`
+ note: captured value is not `Send`
+   --> $DIR/stalled-coroutine-obligations.rs:42:13
+    |
+ LL |             b
+    |             ^ has type `*mut ()` which is not `Send`
37 
38 error: aborting due to 4 previous errors
39 

- Some errors have detailed explanations: E0271, E0277.
- For more information about an error, try `rustc --explain E0271`.
+ For more information about this error, try `rustc --explain E0277`.
42 

Note: some mismatched output was normalized before being compared
-   --> /checkout/tests/ui/traits/next-solver/stalled-coroutine-obligations.rs:41:9
-    = help: within `{async block@/checkout/tests/ui/traits/next-solver/stalled-coroutine-obligations.rs:41:9: 41:19}`, the trait `Send` is not implemented for `*mut ()`
-   --> /checkout/tests/ui/traits/next-solver/stalled-coroutine-obligations.rs:42:13
+ error: future cannot be sent between threads safely
+   --> $DIR/stalled-coroutine-obligations.rs:41:9
+ LL | /         async move {
+ LL | |             b
+ LL | |         }
+    | |_________^ future created by async block is not `Send`
+    |
+    = help: within `{async block@$DIR/stalled-coroutine-obligations.rs:41:9: 41:19}`, the trait `Send` is not implemented for `*mut ()`
+ note: captured value is not `Send`
+   --> $DIR/stalled-coroutine-obligations.rs:42:13
+    |
+ LL |             b
+    |             ^ has type `*mut ()` which is not `Send`
+ For more information about this error, try `rustc --explain E0277`.


The actual stderr differed from the expected stderr
To update references, rerun the tests and pass the `--bless` flag
To only update this specific test, also pass `--test-args traits/next-solver/stalled-coroutine-obligations.rs`

error: 1 errors occurred comparing output.
status: exit status: 1
command: env -u RUSTC_LOG_COLOR RUSTC_ICE="0" RUST_BACKTRACE="short" "/checkout/obj/build/aarch64-unknown-linux-gnu/stage2/bin/rustc" "/checkout/tests/ui/traits/next-solver/stalled-coroutine-obligations.rs" "-Zthreads=1" "-Zsimulate-remapped-rust-src-base=/rustc/FAKE_PREFIX" "-Ztranslate-remapped-path-to-local-path=no" "-Z" "ignore-directory-in-diagnostics-source-blocks=/cargo" "-Z" "ignore-directory-in-diagnostics-source-blocks=/checkout/vendor" "--sysroot" "/checkout/obj/build/aarch64-unknown-linux-gnu/stage2" "--target=aarch64-unknown-linux-gnu" "--check-cfg" "cfg(test,FALSE)" "--error-format" "json" "--json" "future-incompat" "-Ccodegen-units=1" "-Zui-testing" "-Zdeduplicate-diagnostics=no" "-Zwrite-long-types-to-disk=no" "-Cstrip=debuginfo" "--emit" "metadata" "-C" "prefer-dynamic" "--out-dir" "/checkout/obj/build/aarch64-unknown-linux-gnu/test/ui/traits/next-solver/stalled-coroutine-obligations" "-A" "unused" "-W" "unused_attributes" "-A" "internal_features" "-A" "incomplete_features" "-A" "unused_parens" "-A" "unused_braces" "-Crpath" "-Cdebuginfo=0" "-Lnative=/checkout/obj/build/aarch64-unknown-linux-gnu/native/rust-test-helpers" "--edition=2024" "-Znext-solver" "--diagnostic-width=300"
stdout: none
--- stderr -------------------------------
error[E0277]: the trait bound `{async block@/checkout/tests/ui/traits/next-solver/stalled-coroutine-obligations.rs:18:18: 18:23}: Copy` is not satisfied
##[error]  --> /checkout/tests/ui/traits/next-solver/stalled-coroutine-obligations.rs:18:14
   |
LL |     let foo: T = async {};
   |              ^ the trait `Copy` is not implemented for `{async block@/checkout/tests/ui/traits/next-solver/stalled-coroutine-obligations.rs:18:18: 18:23}`

error[E0277]: the trait bound `{async block@/checkout/tests/ui/traits/next-solver/stalled-coroutine-obligations.rs:22:18: 22:23}: Clone` is not satisfied
##[error]  --> /checkout/tests/ui/traits/next-solver/stalled-coroutine-obligations.rs:22:14
   |
LL |     let bar: U = async {};
   |              ^ the trait `Clone` is not implemented for `{async block@/checkout/tests/ui/traits/next-solver/stalled-coroutine-obligations.rs:22:18: 22:23}`

error[E0277]: the trait bound `False: Valid` is not satisfied in `{async block@/checkout/tests/ui/traits/next-solver/stalled-coroutine-obligations.rs:33:18: 33:23}`
##[error]  --> /checkout/tests/ui/traits/next-solver/stalled-coroutine-obligations.rs:33:14
   |
LL |     let foo: T = async { a };
   |              ^   ----- within this `{async block@/checkout/tests/ui/traits/next-solver/stalled-coroutine-obligations.rs:33:18: 33:23}`
   |              |
   |              unsatisfied trait bound
   |
help: within `{async block@/checkout/tests/ui/traits/next-solver/stalled-coroutine-obligations.rs:33:18: 33:23}`, the trait `Valid` is not implemented for `False`
  --> /checkout/tests/ui/traits/next-solver/stalled-coroutine-obligations.rs:27:1
   |
LL | struct False;
   | ^^^^^^^^^^^^
note: captured value does not implement `Valid`
  --> /checkout/tests/ui/traits/next-solver/stalled-coroutine-obligations.rs:33:26
   |
LL |     let foo: T = async { a };
   |                          ^ has type `False` which does not implement `Valid`

error: future cannot be sent between threads safely
##[error]  --> /checkout/tests/ui/traits/next-solver/stalled-coroutine-obligations.rs:41:9
   |
LL | /         async move {
LL | |             b
LL | |         }
   | |_________^ future created by async block is not `Send`
   |
   = help: within `{async block@/checkout/tests/ui/traits/next-solver/stalled-coroutine-obligations.rs:41:9: 41:19}`, the trait `Send` is not implemented for `*mut ()`
note: captured value is not `Send`
  --> /checkout/tests/ui/traits/next-solver/stalled-coroutine-obligations.rs:42:13
   |
LL |             b
   |             ^ has type `*mut ()` which is not `Send`

error: aborting due to 4 previous errors

For more information about this error, try `rustc --explain E0277`.
------------------------------------------

---- [ui] tests/ui/traits/next-solver/stalled-coroutine-obligations.rs stdout end ----
---- [ui] tests/ui/traits/suggest-dereferences/invalid-suggest-deref-issue-127590.rs stdout ----
Saved the actual stderr to `/checkout/obj/build/aarch64-unknown-linux-gnu/test/ui/traits/suggest-dereferences/invalid-suggest-deref-issue-127590/invalid-suggest-deref-issue-127590.stderr`
diff of stderr:

68    = note: required for `Zip<std::slice::Iter<'_, {integer}>, &std::slice::Iter<'_, {integer}>>` to implement `IntoIterator`
69    = note: this error originates in the macro `iterator` (in Nightly builds, run with -Z macro-backtrace for more info)
70 
- error[E0277]: `&std::slice::Iter<'_, {integer}>` is not an iterator
-   --> $DIR/invalid-suggest-deref-issue-127590.rs:6:24
-    |
- LL |     for (src, dest) in std::iter::zip(fields.iter(), &variant.iter()) {
-    |                        ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ `&std::slice::Iter<'_, {integer}>` is not an iterator
-    |
-    = help: the trait `Iterator` is not implemented for `&std::slice::Iter<'_, {integer}>`
- help: the trait `Iterator` is implemented for `std::slice::Iter<'_, T>`
-   --> $SRC_DIR/core/src/slice/iter/macros.rs:LL:COL
-   --> $SRC_DIR/core/src/slice/iter.rs:LL:COL
---
- 
- error[E0277]: `&std::slice::Iter<'_, {integer}>` is not an iterator
-   --> $DIR/invalid-suggest-deref-issue-127590.rs:14:24
-    |
- LL |     for (src, dest) in std::iter::zip(fields.iter(), &variant.iter().clone()) {
-    |                        ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ `&std::slice::Iter<'_, {integer}>` is not an iterator
-    |
-    = help: the trait `Iterator` is not implemented for `&std::slice::Iter<'_, {integer}>`
- help: the trait `Iterator` is implemented for `std::slice::Iter<'_, T>`
-   --> $SRC_DIR/core/src/slice/iter/macros.rs:LL:COL
-   --> $SRC_DIR/core/src/slice/iter.rs:LL:COL
---
To only update this specific test, also pass `--test-args traits/suggest-dereferences/invalid-suggest-deref-issue-127590.rs`

error: 1 errors occurred comparing output.
status: exit status: 1
command: env -u RUSTC_LOG_COLOR RUSTC_ICE="0" RUST_BACKTRACE="short" "/checkout/obj/build/aarch64-unknown-linux-gnu/stage2/bin/rustc" "/checkout/tests/ui/traits/suggest-dereferences/invalid-suggest-deref-issue-127590.rs" "-Zthreads=1" "-Zsimulate-remapped-rust-src-base=/rustc/FAKE_PREFIX" "-Ztranslate-remapped-path-to-local-path=no" "-Z" "ignore-directory-in-diagnostics-source-blocks=/cargo" "-Z" "ignore-directory-in-diagnostics-source-blocks=/checkout/vendor" "--sysroot" "/checkout/obj/build/aarch64-unknown-linux-gnu/stage2" "--target=aarch64-unknown-linux-gnu" "--check-cfg" "cfg(test,FALSE)" "--error-format" "json" "--json" "future-incompat" "-Ccodegen-units=1" "-Zui-testing" "-Zdeduplicate-diagnostics=no" "-Zwrite-long-types-to-disk=no" "-Cstrip=debuginfo" "--emit" "metadata" "-C" "prefer-dynamic" "--out-dir" "/checkout/obj/build/aarch64-unknown-linux-gnu/test/ui/traits/suggest-dereferences/invalid-suggest-deref-issue-127590" "-A" "unused" "-W" "unused_attributes" "-A" "internal_features" "-A" "incomplete_features" "-A" "unused_parens" "-A" "unused_braces" "-Crpath" "-Cdebuginfo=0" "-Lnative=/checkout/obj/build/aarch64-unknown-linux-gnu/native/rust-test-helpers"
stdout: none
--- stderr -------------------------------
error[E0277]: `&std::slice::Iter<'_, {integer}>` is not an iterator
##[error]  --> /checkout/tests/ui/traits/suggest-dereferences/invalid-suggest-deref-issue-127590.rs:6:54
   |
LL |     for (src, dest) in std::iter::zip(fields.iter(), &variant.iter()) {
   |                        --------------                ^^^^^^^^^^^^^^^ `&std::slice::Iter<'_, {integer}>` is not an iterator
   |                        |
   |                        required by a bound introduced by this call
   |
   = help: the trait `Iterator` is not implemented for `&std::slice::Iter<'_, {integer}>`
   = note: required for `&std::slice::Iter<'_, {integer}>` to implement `IntoIterator`
note: required by a bound in `std::iter::zip`
  --> /rustc/FAKE_PREFIX/library/core/src/iter/adapters/zip.rs:65:0
help: consider removing the leading `&`-reference
   |
LL -     for (src, dest) in std::iter::zip(fields.iter(), &variant.iter()) {
LL +     for (src, dest) in std::iter::zip(fields.iter(), variant.iter()) {
   |

error[E0277]: `&std::slice::Iter<'_, {integer}>` is not an iterator
##[error]  --> /checkout/tests/ui/traits/suggest-dereferences/invalid-suggest-deref-issue-127590.rs:6:24
   |
LL |     for (src, dest) in std::iter::zip(fields.iter(), &variant.iter()) {
   |                        ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ `&std::slice::Iter<'_, {integer}>` is not an iterator
   |
   = help: the trait `Iterator` is not implemented for `&std::slice::Iter<'_, {integer}>`
help: the trait `Iterator` is implemented for `std::slice::Iter<'_, T>`
  --> /rustc/FAKE_PREFIX/library/core/src/slice/iter/macros.rs:153:8
  --> /rustc/FAKE_PREFIX/library/core/src/slice/iter.rs:140:0
  ::: /rustc/FAKE_PREFIX/library/core/src/slice/iter.rs:148:2
   |
   = note: in this macro invocation
   = note: required for `Zip<std::slice::Iter<'_, {integer}>, &std::slice::Iter<'_, {integer}>>` to implement `Iterator`
   = note: required for `Zip<std::slice::Iter<'_, {integer}>, &std::slice::Iter<'_, {integer}>>` to implement `IntoIterator`
   = note: this error originates in the macro `iterator` (in Nightly builds, run with -Z macro-backtrace for more info)

error[E0277]: `&std::slice::Iter<'_, {integer}>` is not an iterator
##[error]  --> /checkout/tests/ui/traits/suggest-dereferences/invalid-suggest-deref-issue-127590.rs:14:54
   |
LL |     for (src, dest) in std::iter::zip(fields.iter(), &variant.iter().clone()) {
   |                        --------------                ^^^^^^^^^^^^^^^^^^^^^^^ `&std::slice::Iter<'_, {integer}>` is not an iterator
   |                        |
   |                        required by a bound introduced by this call
   |
   = help: the trait `Iterator` is not implemented for `&std::slice::Iter<'_, {integer}>`
   = note: required for `&std::slice::Iter<'_, {integer}>` to implement `IntoIterator`
note: required by a bound in `std::iter::zip`
  --> /rustc/FAKE_PREFIX/library/core/src/iter/adapters/zip.rs:65:0
help: consider removing the leading `&`-reference
   |
LL -     for (src, dest) in std::iter::zip(fields.iter(), &variant.iter().clone()) {
LL +     for (src, dest) in std::iter::zip(fields.iter(), variant.iter().clone()) {
   |

error[E0277]: `&std::slice::Iter<'_, {integer}>` is not an iterator
##[error]  --> /checkout/tests/ui/traits/suggest-dereferences/invalid-suggest-deref-issue-127590.rs:14:24
   |
LL |     for (src, dest) in std::iter::zip(fields.iter(), &variant.iter().clone()) {
   |                        ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ `&std::slice::Iter<'_, {integer}>` is not an iterator
   |
   = help: the trait `Iterator` is not implemented for `&std::slice::Iter<'_, {integer}>`
help: the trait `Iterator` is implemented for `std::slice::Iter<'_, T>`
  --> /rustc/FAKE_PREFIX/library/core/src/slice/iter/macros.rs:153:8
  --> /rustc/FAKE_PREFIX/library/core/src/slice/iter.rs:140:0
  ::: /rustc/FAKE_PREFIX/library/core/src/slice/iter.rs:148:2
   |
   = note: in this macro invocation
   = note: required for `Zip<std::slice::Iter<'_, {integer}>, &std::slice::Iter<'_, {integer}>>` to implement `Iterator`
   = note: required for `Zip<std::slice::Iter<'_, {integer}>, &std::slice::Iter<'_, {integer}>>` to implement `IntoIterator`
   = note: this error originates in the macro `iterator` (in Nightly builds, run with -Z macro-backtrace for more info)

error: aborting due to 4 previous errors

For more information about this error, try `rustc --explain E0277`.
---
error: ui test did not emit an error
note: by default, ui tests are expected not to compile.
hint: use check-pass, build-pass, or run-pass directive to change this behavior.
status: exit status: 0
command: env -u RUSTC_LOG_COLOR RUSTC_ICE="0" RUST_BACKTRACE="short" "/checkout/obj/build/aarch64-unknown-linux-gnu/stage2/bin/rustc" "/checkout/tests/ui/type-alias-impl-trait/coherence/coherence_different_hidden_ty.rs" "-Zthreads=1" "-Zsimulate-remapped-rust-src-base=/rustc/FAKE_PREFIX" "-Ztranslate-remapped-path-to-local-path=no" "-Z" "ignore-directory-in-diagnostics-source-blocks=/cargo" "-Z" "ignore-directory-in-diagnostics-source-blocks=/checkout/vendor" "--sysroot" "/checkout/obj/build/aarch64-unknown-linux-gnu/stage2" "--target=aarch64-unknown-linux-gnu" "--check-cfg" "cfg(test,FALSE)" "--error-format" "json" "--json" "future-incompat" "-Ccodegen-units=1" "-Zui-testing" "-Zdeduplicate-diagnostics=no" "-Zwrite-long-types-to-disk=no" "-Cstrip=debuginfo" "--emit" "metadata" "-C" "prefer-dynamic" "--out-dir" "/checkout/obj/build/aarch64-unknown-linux-gnu/test/ui/type-alias-impl-trait/coherence/coherence_different_hidden_ty" "-A" "unused" "-W" "unused_attributes" "-A" "internal_features" "-A" "incomplete_features" "-A" "unused_parens" "-A" "unused_braces" "-Crpath" "-Cdebuginfo=0" "-Lnative=/checkout/obj/build/aarch64-unknown-linux-gnu/native/rust-test-helpers"
stdout: none
stderr: none

---- [ui] tests/ui/type-alias-impl-trait/coherence/coherence_different_hidden_ty.rs stdout end ----
---- [ui] tests/ui/typeck/issue-116864.rs stdout ----

error: test compilation failed although it shouldn't!
status: exit status: 1
command: env -u RUSTC_LOG_COLOR RUSTC_ICE="0" RUST_BACKTRACE="short" "/checkout/obj/build/aarch64-unknown-linux-gnu/stage2/bin/rustc" "/checkout/tests/ui/typeck/issue-116864.rs" "-Zthreads=1" "-Zsimulate-remapped-rust-src-base=/rustc/FAKE_PREFIX" "-Ztranslate-remapped-path-to-local-path=no" "-Z" "ignore-directory-in-diagnostics-source-blocks=/cargo" "-Z" "ignore-directory-in-diagnostics-source-blocks=/checkout/vendor" "--sysroot" "/checkout/obj/build/aarch64-unknown-linux-gnu/stage2" "--target=aarch64-unknown-linux-gnu" "--check-cfg" "cfg(test,FALSE)" "--error-format" "json" "--json" "future-incompat" "-Ccodegen-units=1" "-Zui-testing" "-Zdeduplicate-diagnostics=no" "-Zwrite-long-types-to-disk=no" "-Cstrip=debuginfo" "--emit" "metadata" "-C" "prefer-dynamic" "--out-dir" "/checkout/obj/build/aarch64-unknown-linux-gnu/test/ui/typeck/issue-116864" "-A" "unused" "-W" "unused_attributes" "-A" "internal_features" "-A" "incomplete_features" "-A" "unused_parens" "-A" "unused_braces" "-Crpath" "-Cdebuginfo=0" "-Lnative=/checkout/obj/build/aarch64-unknown-linux-gnu/native/rust-test-helpers" "--edition=2021" "-Znext-solver"
stdout: none
--- stderr -------------------------------
error[E0277]: expected a `FnOnce(&'any i32)` closure, found `impl for<'any> FnMutFut<&'any BAZ::Param, ()>`
##[error]  --> /checkout/tests/ui/typeck/issue-116864.rs:23:1
   |
LL | / async fn foo<BAZ>(_: BAZ, mut cb: impl for<'any> FnMutFut<&'any BAZ::Param, ()>)
LL | | where
LL | |     BAZ: Baz<Param = i32>,
   | |__________________________^ expected an `FnOnce(&'any i32)` closure, found `impl for<'any> FnMutFut<&'any BAZ::Param, ()>`
   |
   = note: expected a closure with signature `for<'any> fn(&'any _)`
              found a closure with signature `fn(&_)`
note: required for `impl for<'any> FnMutFut<&'any BAZ::Param, ()>` to implement `for<'any> FnMutFut<&'any i32, ()>`
  --> /checkout/tests/ui/typeck/issue-116864.rs:15:20
   |
LL | impl<P, F, FUT, R> FnMutFut<P, R> for F
   |                    ^^^^^^^^^^^^^^     ^
LL | where
LL |     F: FnMut(P) -> FUT,
   |                    --- unsatisfied trait bound introduced here

error: the type `impl Future<Output = ()>` is not well-formed
##[error]  --> /checkout/tests/ui/typeck/issue-116864.rs:23:81
   |
LL | async fn foo<BAZ>(_: BAZ, mut cb: impl for<'any> FnMutFut<&'any BAZ::Param, ()>)
   |                                                                                 ^

error[E0277]: expected a `FnMut(&i32)` closure, found `impl for<'any> FnMutFut<&'any BAZ::Param, ()>`
##[error]  --> /checkout/tests/ui/typeck/issue-116864.rs:27:5
   |
LL |     cb(&1i32).await;
   |     ^^^^^^^^^ expected an `FnMut(&i32)` closure, found `impl for<'any> FnMutFut<&'any BAZ::Param, ()>`

error[E0308]: mismatched types
##[error]  --> /checkout/tests/ui/typeck/issue-116864.rs:27:5
   |
LL |     cb(&1i32).await;
   |     ^^^^^^^^^ ----- arguments to this function are incorrect
   |     |
   |     types differ
   |
   = note:         expected type `_`
           found associated type `<impl for<'any> FnMutFut<&'any BAZ::Param, ()> as FnOnce<(&i32,)>>::Output`
   = help: consider constraining the associated type `<impl for<'any> FnMutFut<&'any BAZ::Param, ()> as FnOnce<(&i32,)>>::Output` to `_`
   = note: for more information, visit https://doc.rust-lang.org/book/ch19-03-advanced-traits.html
note: method defined here
  --> /rustc/FAKE_PREFIX/library/core/src/future/into_future.rs:134:7

error: the type `{async fn body of foo<BAZ, impl for<'any> FnMutFut<&'any BAZ::Param, ()>>()}` is not well-formed
##[error]  --> /checkout/tests/ui/typeck/issue-116864.rs:23:81
   |
LL | async fn foo<BAZ>(_: BAZ, mut cb: impl for<'any> FnMutFut<&'any BAZ::Param, ()>)
   |                                                                                 ^

error[E0277]: expected a `FnOnce(&'any i32)` closure, found `impl for<'any> FnMutFut<&'any BAZ::Param, ()>`
##[error]  --> /checkout/tests/ui/typeck/issue-116864.rs:26:1
   |
LL | / {
LL | |     cb(&1i32).await;
LL | | }
   | |_^ expected an `FnOnce(&'any i32)` closure, found `impl for<'any> FnMutFut<&'any BAZ::Param, ()>`
   |
   = note: expected a closure with signature `for<'any> fn(&'any _)`
              found a closure with signature `fn(&_)`
note: required for `impl for<'any> FnMutFut<&'any BAZ::Param, ()>` to implement `for<'any> FnMutFut<&'any i32, ()>`
  --> /checkout/tests/ui/typeck/issue-116864.rs:15:20
   |
LL | impl<P, F, FUT, R> FnMutFut<P, R> for F
   |                    ^^^^^^^^^^^^^^     ^
LL | where
LL |     F: FnMut(P) -> FUT,
   |                    --- unsatisfied trait bound introduced here

---
---- [ui] tests/ui/ufcs/ufcs-qpath-self-mismatch.rs stdout ----
Saved the actual stderr to `/checkout/obj/build/aarch64-unknown-linux-gnu/test/ui/ufcs/ufcs-qpath-self-mismatch/ufcs-qpath-self-mismatch.stderr`
diff of stderr:

69 LL +     <i32 as Add<i32>>::add(1, 2i32);
70    |
71 
- error[E0277]: cannot add `u32` to `i32`
-   --> $DIR/ufcs-qpath-self-mismatch.rs:4:5
-    |
- LL |     <i32 as Add<u32>>::add(1, 2);
-    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^ no implementation for `i32 + u32`
-    |
-    = help: the trait `Add<u32>` is not implemented for `i32`
- help: the following other types implement trait `Add<Rhs>`
-   --> $SRC_DIR/core/src/ops/arith.rs:LL:COL
-    |
-    = note: `i32` implements `Add`
-   ::: $SRC_DIR/core/src/ops/arith.rs:LL:COL
-    |
-    = note: in this macro invocation
-   --> $SRC_DIR/core/src/internal_macros.rs:LL:COL
-    |
-    = note: `&i32` implements `Add<i32>`
-   ::: $SRC_DIR/core/src/internal_macros.rs:LL:COL
-    |
-    = note: `i32` implements `Add<&i32>`
-   ::: $SRC_DIR/core/src/internal_macros.rs:LL:COL
-    |
-    = note: `&i32` implements `Add`
-    = note: this error originates in the macro `add_impl` (in Nightly builds, run with -Z macro-backtrace for more info)
- 
- error: aborting due to 4 previous errors
---
To only update this specific test, also pass `--test-args ufcs/ufcs-qpath-self-mismatch.rs`

error: 1 errors occurred comparing output.
status: exit status: 1
command: env -u RUSTC_LOG_COLOR RUSTC_ICE="0" RUST_BACKTRACE="short" "/checkout/obj/build/aarch64-unknown-linux-gnu/stage2/bin/rustc" "/checkout/tests/ui/ufcs/ufcs-qpath-self-mismatch.rs" "-Zthreads=1" "-Zsimulate-remapped-rust-src-base=/rustc/FAKE_PREFIX" "-Ztranslate-remapped-path-to-local-path=no" "-Z" "ignore-directory-in-diagnostics-source-blocks=/cargo" "-Z" "ignore-directory-in-diagnostics-source-blocks=/checkout/vendor" "--sysroot" "/checkout/obj/build/aarch64-unknown-linux-gnu/stage2" "--target=aarch64-unknown-linux-gnu" "--check-cfg" "cfg(test,FALSE)" "--error-format" "json" "--json" "future-incompat" "-Ccodegen-units=1" "-Zui-testing" "-Zdeduplicate-diagnostics=no" "-Zwrite-long-types-to-disk=no" "-Cstrip=debuginfo" "--emit" "metadata" "-C" "prefer-dynamic" "--out-dir" "/checkout/obj/build/aarch64-unknown-linux-gnu/test/ui/ufcs/ufcs-qpath-self-mismatch" "-A" "unused" "-W" "unused_attributes" "-A" "internal_features" "-A" "incomplete_features" "-A" "unused_parens" "-A" "unused_braces" "-Crpath" "-Cdebuginfo=0" "-Lnative=/checkout/obj/build/aarch64-unknown-linux-gnu/native/rust-test-helpers"
stdout: none
--- stderr -------------------------------
error[E0277]: cannot add `u32` to `i32`
##[error]  --> /checkout/tests/ui/ufcs/ufcs-qpath-self-mismatch.rs:4:6
   |
LL |     <i32 as Add<u32>>::add(1, 2);
   |      ^^^ no implementation for `i32 + u32`
   |
   = help: the trait `Add<u32>` is not implemented for `i32`
help: the following other types implement trait `Add<Rhs>`
  --> /rustc/FAKE_PREFIX/library/core/src/ops/arith.rs:98:8
   |
   = note: `i32` implements `Add`
  ::: /rustc/FAKE_PREFIX/library/core/src/ops/arith.rs:113:0
   |
   = note: in this macro invocation
  --> /rustc/FAKE_PREFIX/library/core/src/internal_macros.rs:22:8
   |
   = note: `&i32` implements `Add<i32>`
  ::: /rustc/FAKE_PREFIX/library/core/src/internal_macros.rs:33:8
   |
   = note: `i32` implements `Add<&i32>`
  ::: /rustc/FAKE_PREFIX/library/core/src/internal_macros.rs:44:8
   |
   = note: `&i32` implements `Add`
   = note: this error originates in the macro `add_impl` (in Nightly builds, run with -Z macro-backtrace for more info)

error[E0308]: mismatched types
##[error]  --> /checkout/tests/ui/ufcs/ufcs-qpath-self-mismatch.rs:7:28
   |
LL |     <i32 as Add<i32>>::add(1u32, 2);
   |     ---------------------- ^^^^ expected `i32`, found `u32`
   |     |
   |     arguments to this function are incorrect
   |
help: the return type of this call is `u32` due to the type of the argument passed
  --> /checkout/tests/ui/ufcs/ufcs-qpath-self-mismatch.rs:7:5
   |
LL |     <i32 as Add<i32>>::add(1u32, 2);
   |     ^^^^^^^^^^^^^^^^^^^^^^^----^^^^
   |                            |
   |                            this argument influences the return type of `add`
note: method defined here
  --> /rustc/FAKE_PREFIX/library/core/src/ops/arith.rs:91:7
help: change the type of the numeric literal from `u32` to `i32`
   |
LL -     <i32 as Add<i32>>::add(1u32, 2);
LL +     <i32 as Add<i32>>::add(1i32, 2);
   |

error[E0308]: mismatched types
##[error]  --> /checkout/tests/ui/ufcs/ufcs-qpath-self-mismatch.rs:9:31
   |
LL |     <i32 as Add<i32>>::add(1, 2u32);
   |     ----------------------    ^^^^ expected `i32`, found `u32`
   |     |
   |     arguments to this function are incorrect
   |
help: the return type of this call is `u32` due to the type of the argument passed
  --> /checkout/tests/ui/ufcs/ufcs-qpath-self-mismatch.rs:9:5
   |
LL |     <i32 as Add<i32>>::add(1, 2u32);
   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^----^
   |                               |
   |                               this argument influences the return type of `add`
note: method defined here
  --> /rustc/FAKE_PREFIX/library/core/src/ops/arith.rs:91:7
help: change the type of the numeric literal from `u32` to `i32`
   |
LL -     <i32 as Add<i32>>::add(1, 2u32);
LL +     <i32 as Add<i32>>::add(1, 2i32);
   |

error: aborting due to 3 previous errors

Some errors have detailed explanations: E0277, E0308.

adwinwhite and others added 11 commits May 19, 2026 15:21

add is rigid

183c32f

fix all new field errors

d7a643a

eagerly normalize things in solver

d99d401

assumptions on binders ICE yeet

70f750f

questionable

d841bfc

good stuff

20ea569

break sqlparser

fe9d6ba

fix param_env stuff

be28c53

norm folder perf

bdc2d92

W

91339aa

f fast_reject

2d909f7

rustbot assigned lcnr May 19, 2026