FreeBSD-stable-14-amd64-test - Build #549 - Still Unstable

FreeBSD-stable-14-amd64-test - Build #549 (a951992d1eb332ed1e97ef6b89ead3f05707adc2) - Still Unstable

Build information: https://ci.FreeBSD.org/job/FreeBSD-stable-14-amd64-test/549/
Full change log: https://ci.FreeBSD.org/job/FreeBSD-stable-14-amd64-test/549/changes
Full build log: https://ci.FreeBSD.org/job/FreeBSD-stable-14-amd64-test/549/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)

6bf819c910482a3376560d58a481b0e7f8f328f0 by kib:
kern_thread.c: remove unneeded include of sys/param.h

29c4e3198456adc6095ce594941b87ccf879e2d6 by kib:
kern_thr.c/kern_sig.c: remove sys/cdefs.h

de4b8c8ae1a83d154971781835db44dffb05c874 by kib:
kern_thr.c: normalize includes

ed9e2991c2da5924a1876383dbe9a51e1015b69e by kib:
sigqueue(2): add impl-specific flag __SIGQUEUE_TID

afc8b17816e49cd3d318c8760452d8f1e5b898a6 by kib:
sigqueue(2): Document __SIGQUEUE_TID

3fbb97541cfe1833fb45ff69830948d08413f6c6 by kib:
sys/signal.h: move union sigval into dedicated private header

e449481bee5fd08d4342156696eb4a6eef531ef0 by kib:
libthr: add pthread_sigqueue(3)

42b071cbc91e18e45e21feff39ca9e47ef93cc55 by kib:
pthread_sigqueue(3): document

bd30b3dfd5c860849bb6bad43bbe824fe3d8b211 by kib:
Add test for pthread_sigqueue(3)

8f19af4b0955dc3f4309a41d6aeb7514f6884848 by kib:
libc: make strerror_rl() usable for libc

ade62d406239b728a1c74974bbb57ed493c733e0 by kib:
__vprintf(): switch from strerror() to strerror_rl()

0451d4287a929910e9cccf2431d2464632e51965 by kib:
libc: minor style, wrap long lines

09bcfbd1aede8f7596f14a95fd408aa79a239a9c by kib:
libc printf_render_errno(): do not use strerror()

a951992d1eb332ed1e97ef6b89ead3f05707adc2 by kib:
libc_private.h: use private namespace name for size_t



The failed test cases:

2 tests failed.
FAILED:  sys.netpfil.pf.scrub_compat.set_tos_v6

Error Message:
atf-check failed; see the output of the test for details

FAILED:  sys.netlink.test_netlink_message_writer.py.__test_cases_list__

Error Message:
Test program did not exit cleanly