FreeBSD-stable-15-amd64-test - Build #368 - Still Unstable

FreeBSD-stable-15-amd64-test - Build #368 (54849107681dadaf0aa7bc88d55b7defe3f7826d) - Still Unstable

Build information: https://ci.FreeBSD.org/job/FreeBSD-stable-15-amd64-test/368/
Full change log: https://ci.FreeBSD.org/job/FreeBSD-stable-15-amd64-test/368/changes
Full build log: https://ci.FreeBSD.org/job/FreeBSD-stable-15-amd64-test/368/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)

e53890c477f53f12da721c48334a0330d07345c3 by fuz:
contrib/mandoc: add -ieee754-2008

141cec051d142f329bd32e43d2e492aa6719d8f9 by fuz:
contrib/mandoc: document .St -ieee754-2008 in mdoc(7)

104488641acaf2269d860d8abf142d80a340a5e8 by fuz:
msun: expose the C23 functions we already support in <math.h>

6fc280810ead5f562b54c590a7e00d21c52b2449 by fuz:
msun: document that {sin,cos,tan}pi(3) follow C23

35787967e87679511c906fbcb7dbccb31fd1ef33 by fuz:
time.h: add timegm() to the C23 namespace

72609bb2bb25710871157792715213ef71a51521 by fuz:
uchar.h: add char8_t

2ff4e6ac0d9f3f4ef477d15c40da04a87f5b7578 by fuz:
sys/_types.h: recognise char8_t as a builtin type in C++20

cbad54ba46e6a4ad83d87d379fc3fcedb0cd7246 by fuz:
sys/limits.h: add C23 _WIDTH macros

ff50ace5fe0ec991ff2e72a80a6c9e90b7e7f709 by fuz:
sys/stdint.h: add C23 _WIDTH macros

44fcd991dd2803984260d69f4991651c0d64e0d1 by fuz:
powerpc/_stdint.h: fix SIG_ATOMIC_{MIN,MAX,WIDTH}

12f87885206b25b7400d447059cb207341febf92 by fuz:
libc/tests: add test for *_MAX, *_MIN, and *_WIDTH

325b327ff7d7ece7646058c4d42f087c026c9d08 by fuz:
libc/limits_test: add no-op testcase to satisfy kyua

275c11b7ccffffb8faf31fb0fb98e99ea5b413da by fuz:
libc: implement C23 <stdbit.h> functions

fff2795baf1ae298b0fcf137bc584faf1d79c785 by fuz:
libc/stdc_has_single_bit.c: fix gcc warning (-Wparentheses)

6b7ed283d4b40c4e17c35e2581b9c2329c8669b6 by fuz:
man/man3: add stdbit.3

27de6568a3ec482804f7541afa219a9292f2c696 by fuz:
libc/stdbit: add man pages for stdbit functions

c9ec3fc0d5072b2d23d7d3dbd6dd2cedf4c7938d by fuz:
libc/tests: add stdbit test framework and unit tests

41b346a6e3a71af8654706fba8f8e25ffdbc37c9 by fuz:
libc: Fix TESTSDIR for new stdbit tests

be65a18424e7189397ba30cd293c15668ffc32c0 by fuz:
man/man3: add cross references to stdbit(3)

54849107681dadaf0aa7bc88d55b7defe3f7826d by fuz:
libc/tests/string: improve stpncpy() "bounds" unit test



The failed test cases:

2 tests failed.
FAILED:  lib.libc.string.stpncpy_test.bounds

Error Message:
Empty test result or no new line

FAILED:  sys.netlink.test_netlink_message_writer.py.__test_cases_list__

Error Message:
Test program did not exit cleanly