The tail/pipe-f2 test fails on NetBSD 9.3 and 10.0-rc4. test-suite.log on NetBSD 9.3:
FAIL: tests/tail/pipe-f2 ======================== --- exp 2024-03-24 12:45:54.627129684 +0100 +++ out 2024-03-24 12:45:54.628038908 +0100 @@ -1 +0,0 @@ -1 kill: 20415: No such process FAIL tests/tail/pipe-f2.sh (exit status: 1)