GNU testsuite comparison:

GNU test failed: tests/chmod/silent. tests/chmod/silent is passing on 'main'. Maybe you have to rebase?
GNU test failed: tests/chmod/thru-dangling. tests/chmod/thru-dangling is passing on 'main'. Maybe you have to rebase?

I'm not sure if any of the errors on CICD/Build + L10n are the result of the changes I made to this code (it shouldn't affect anything because I just change the implementation of the code from using .exists() to .try_exists() and modified the error messages accordingly to match what GNU outputs). I see the same error for CICD/Build in #9796.

As for the WSL2 error, I ran the sync and df tests locally on my computer and it all passes. Can anyone else confirm anything about these errors?

sorry, it needs to be rebased

@sylvestre, I just resetted the branch to the current updates that coreutils' main has and reapplied my changes within chmod.rs and test_chmod.rs

GNU testsuite comparison:

GNU test failed: tests/shuf/shuf-reservoir. tests/shuf/shuf-reservoir is passing on 'main'. Maybe you have to rebase?
GNU test failed: tests/sort/sort-stale-thread-mem. tests/sort/sort-stale-thread-mem is passing on 'main'. Maybe you have to rebase?

@sylvestre I think this PR is ready for review. I'm pretty certain that the GNU test failures for shuf and sort aren't related to this PR since I do not see chmod being used for those test scripts from the GNU upstream mirror.

Also, I noticed another PR #9860 solving the same issue I am doing here. I'm open to either approach (using fs::metadata() or .try_exists()) being used to resolve the permission denied issue. If you think fs::metadata is more appropriate to use in this situation, I'll close this PR and let majiayu's PR handle that.