split: bad error message

[Devel08]

this pr resolves #12665

[github-actions]

GNU testsuite comparison:

Skip an intermittent issue tests/pr/bounded-memory (fails in this run but passes in the 'main' branch)
Skipping an intermittent issue tests/cut/bounded-memory (passes in this run but fails in the 'main' branch)
Skipping an intermittent issue tests/tail/inotify-dir-recreate (passes in this run but fails in the 'main' branch)
Note: The gnu test tests/tail/tail-n0f is now being skipped but was previously passing.

[sylvestre]

you should use if_err (or equivalent)

[sylvestre]

use strip_errno to remove "(os error "

[sylvestre]

(os error
is something we are trying to remove
please try on the real error message

[sylvestre]

a job is failing:

---- test_split::test_io_error stdout ----
bin: "/target/i686-unknown-linux-musl/debug/coreutils"
run: /target/i686-unknown-linux-musl/debug/coreutils split /proc/self/mem

thread 'test_split::test_io_error' panicked at tests/by-util/test_split.rs:2086:10:
assertion failed: `(left == right)`

Diff < left / right > :
<split: I/O error
>split: Input/output error
 


stack backtrace:
   0: __rustc::rust_begin_unwind
             at /rustc/6b00bc3880198600130e1cf62b8f8a93494488cc/library/std/src/panicking.rs:697:5
   1: core::panicking::panic_fmt
             at /rustc/6b00bc3880198600130e1cf62b8f8a93494488cc/library/core/src/panicking.rs:75:14
   2: uutests::util::CmdResult::stderr_is
             at ./tests/uutests/src/lib/util.rs:647:9
   3: tests::test_split::test_io_error
             at ./tests/by-util/test_split.rs:2083:5
   4: tests::test_split::test_io_error::{{closure}}
             at ./tests/by-util/test_split.rs:2082:19
   5: core::ops::function::FnOnce::call_once
             at /rust/lib/rustlib/src/rust/library/core/src/ops/function.rs:250:5
   6: core::ops::function::FnOnce::call_once
             at /rustc/6b00bc3880198600130e1cf62b8f8a93494488cc/library/core/src/ops/function.rs:250:5
note: Some details are omitted, run with `RUST_BACKTRACE=full` for a verbose backtrace.


failures:
    test_split::test_io_error

test result: FAILED. 5181 passed; 1 failed; 85 ignored; 0 measured; 0 filtered out; finished in 61.28s

[Devel08]

a job is failing:

---- test_split::test_io_error stdout ----
bin: "/target/i686-unknown-linux-musl/debug/coreutils"
run: /target/i686-unknown-linux-musl/debug/coreutils split /proc/self/mem

thread 'test_split::test_io_error' panicked at tests/by-util/test_split.rs:2086:10:
assertion failed: `(left == right)`

Diff < left / right > :
<split: I/O error
>split: Input/output error
 


stack backtrace:
   0: __rustc::rust_begin_unwind
             at /rustc/6b00bc3880198600130e1cf62b8f8a93494488cc/library/std/src/panicking.rs:697:5
   1: core::panicking::panic_fmt
             at /rustc/6b00bc3880198600130e1cf62b8f8a93494488cc/library/core/src/panicking.rs:75:14
   2: uutests::util::CmdResult::stderr_is
             at ./tests/uutests/src/lib/util.rs:647:9
   3: tests::test_split::test_io_error
             at ./tests/by-util/test_split.rs:2083:5
   4: tests::test_split::test_io_error::{{closure}}
             at ./tests/by-util/test_split.rs:2082:19
   5: core::ops::function::FnOnce::call_once
             at /rust/lib/rustlib/src/rust/library/core/src/ops/function.rs:250:5
   6: core::ops::function::FnOnce::call_once
             at /rustc/6b00bc3880198600130e1cf62b8f8a93494488cc/library/core/src/ops/function.rs:250:5
note: Some details are omitted, run with `RUST_BACKTRACE=full` for a verbose backtrace.


failures:
    test_split::test_io_error

test result: FAILED. 5181 passed; 1 failed; 85 ignored; 0 measured; 0 filtered out; finished in 61.28s

That happens on Ubuntu systems, because the error there is I/O instead of input/output, should we change the error in the locales to match Ubuntu?

[Devel08]

Anyways, I'll just rewrite the test for both errors