date: fix error message when opening file

[leon3s]

Closes #4540

[github-actions]

GNU testsuite comparison:

GNU test failed: tests/tail-2/inotify-dir-recreate. tests/tail-2/inotify-dir-recreate is passing on 'main'. Maybe you have to rebase?

[sylvestre]

I think you need to make that line Unix specific - will fail on Windows

[leon3s]

Sadly i cannot really test the behavior on window so maybe i enable the test on unix only ?

[sylvestre]

yeah, unix only is fine

[sylvestre]

Fails on mac:

    Checking uu_du v0.0.17 (/Users/runner/work/coreutils/coreutils/src/uu/du)
error[E0599]: no method named `map_err_context` found for struct `Error` in the current scope
   --> src/uu/date/src/date.rs:229:36
    |
229 |                     return Err(err.map_err_context(|| path.display().to_string()));
    |                                    ^^^^^^^^^^^^^^^ method not found in `Error`
    |
   ::: /Users/runner/work/coreutils/coreutils/src/uucore/src/lib/mods/error.rs:468:8
    |
468 |     fn map_err_context(self, context: impl FnOnce() -> String) -> T;
    |        --------------- the method is available for `std::io::Error` here
    |
    = help: items from traits can only be used if the trait is in scope
help: the following trait is implemented but not in scope; perhaps add a `use` for it:
    |
11  | use uucore::error::FromIo;
    |

For more information about this error, try `rustc --explain E0599`.

[leon3s]

It's look like the failing tests aren't related to the pull request itself now

[tertsdiepraam]

I just realized we have some duplicate work going on between this PR and #4572. I think the latter is a bit more comprehensive. But maybe we can add the test from this PR to the other one?

And yes the failures are due to this: #4634 (I'm working on fixing it)

[leon3s]

So i draft this one maybe and when #4572 is ready i add the test to it ?

[tertsdiepraam]

Sounds like a good plan :)

[cakebaker]

So i draft this one maybe and when #4572 is ready i add the test to it ?

@leon3s just fyi, #4572 has been merged a while ago