FreeBSD-main-amd64-test - Build #24866 - Unstable

FreeBSD-main-amd64-test - Build #24866 (dc15f025062da40ac3a2529b6c979c597b9eb94c) - Unstable

Build information: https://ci.FreeBSD.org/job/FreeBSD-main-amd64-test/24866/
Full change log: https://ci.FreeBSD.org/job/FreeBSD-main-amd64-test/24866/changes
Full build log: https://ci.FreeBSD.org/job/FreeBSD-main-amd64-test/24866/console

Status explanation:
"Unstable" - some tests are suspected being broken by the following changes
"Still Unstable" - the failing test cases have not been fixed by these
                   following changes and this is a notification to note that
                   these changes have not been fully tested by the CI system

Change summaries:
(Those commits are likely but not certainly responsible)

32fdcff8703da6f2795193acc77ec3c1fb8b723d by kib:
libc/sys: add errno test

dc15f025062da40ac3a2529b6c979c597b9eb94c by br:
snd_hdspe(4): Optional unified pcm device.



The failed test cases:

1 tests failed.
FAILED:  sys.netinet.carp.unicast_v4

Error Message:
Test case body returned a non-ok exit code, but this is not allowed