Re: [PATCH] t7300: repair filesystem permissions with test_when_finished

> It tests that "clean -d" is happy if a blind rmdir(2) removes the
> directory.  If it fails for whatever reason (e.g. add "exit(0)" at
> the beginning of cmd_clean(), for example) to remove the directory,
> we do leave an empty unreadable directory behind.
>
> But as long as that directory is empty, that will not cause us to
> remove the trash directory at the end, so we should be OK.