test_follow_when_files_are_pointing_to_same_relative_file_and_file_stays_same_size intermittent failure

[xtqqczze]

---- test_tail::test_follow_when_files_are_pointing_to_same_relative_file_and_file_stays_same_size stdout ----
bin: "/target/i686-unknown-linux-gnu/debug/coreutils"
write(default): /tmp/.tmpD0YypY/data
run: /target/i686-unknown-linux-gnu/debug/coreutils tail --follow=descriptor --max-unchanged-stats=1 --sleep-interval=0.1 data /tmp/.tmpD0YypY/data
write(default): /tmp/.tmpD0YypY/data

thread 'test_tail::test_follow_when_files_are_pointing_to_same_relative_file_and_file_stays_same_size' panicked at tests/by-util/test_tail.rs:4853:10:
Expected stderr to be empty, but it's:
tail: /tmp/.tmpD0YypY/data: file truncated

[xtqqczze]

The test name should also be made more concise.