`tail`: Intermittent failure of `test_tail::test_follow_name_truncate4` on freebsd

[Joining7943]

Happened here https://github.com/uutils/coreutils/actions/runs/3862874468/jobs/6584760432

  ---- test_tail::test_follow_name_truncate4 stdout ----
  current_directory_resolved: 
  write(append): /tmp/.tmpxN77vP/file
  run: /Users/runner/work/coreutils/coreutils/target/debug/coreutils tail -s.1 --max-unchanged-stats=1 -F file
  write(truncate): /tmp/.tmpxN77vP/file
  thread 'test_tail::test_follow_name_truncate4' panicked at 'Expected stderr to be empty, but it's:
  tail: file: file truncated
  ', tests/by-util/test_tail.rs:2026:14
  stack backtrace:
     0: rust_begin_unwind
               at /rustc/69f9c33d71c871fc16ac445211281c6e7a340943/library/std/src/panicking.rs:575:5
     1: core::panicking::panic_fmt
               at /rustc/69f9c33d71c871fc16ac445211281c6e7a340943/library/core/src/panicking.rs:65:14
     2: tests::common::util::CmdResult::no_stderr
               at ./tests/common/util.rs:414:9
     3: tests::common::util::CmdResult::stdout_only
               at ./tests/common/util.rs:585:9
     4: tests::test_tail::test_follow_name_truncate4
               at ./tests/by-util/test_tail.rs:2023:9
     5: tests::test_tail::test_follow_name_truncate4::{{closure}}
               at ./tests/by-util/test_tail.rs:2003:1
     6: core::ops::function::FnOnce::call_once
               at /rustc/69f9c33d71c871fc16ac445211281c6e7a340943/library/core/src/ops/function.rs:251:5
     7: core::ops::function::FnOnce::call_once
               at /rustc/69f9c33d71c871fc16ac445211281c6e7a340943/library/core/src/ops/function.rs:251:5
  note: Some details are omitted, run with `RUST_BACKTRACE=full` for a verbose backtrace.

[cre4ture]

happend again: https://github.com/uutils/coreutils/actions/runs/8529289915/job/23364853543?pr=6154

---- test_tail::test_follow_name_truncate4 stdout ----
write(append): /tmp/.tmpJ7XcP6/file
run: /target/i686-unknown-linux-musl/debug/coreutils tail -s.1 --max-unchanged-stats=1 -F file
write(truncate): /tmp/.tmpJ7XcP6/file
thread 'test_tail::test_follow_name_truncate4' panicked at 'Expected stderr to be empty, but it's:
tail: file: file truncated
', tests/by-util/test_tail.rs:2006:14
stack backtrace: