FreeBSD-main-amd64-test - Build #22799 - Still Unstable

FreeBSD-main-amd64-test - Build #22799 (f32db406504ece1b28f43dc816736e081fe22826) - Still Unstable

Build information: https://ci.FreeBSD.org/job/FreeBSD-main-amd64-test/22799/
Full change log: https://ci.FreeBSD.org/job/FreeBSD-main-amd64-test/22799/changes
Full build log: https://ci.FreeBSD.org/job/FreeBSD-main-amd64-test/22799/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)

3e2e5eebfaa0aebb2790bbde7f35d4c6c52e2596 by des:
tzcode: Remove access() again, cf. 02ba1d993fa9.

96e68c393f65046c0cf69d29f89efcfee949e5de by des:
tzcode: Avoid memory leak if pthread_setspecific() fails.

55572cff58c4208a9e532356a245676b8eed6a3e by des:
tzcode: Fully initialize structs before use.

2aad7570f4e11ac94bb06c44cdc83ad1962fb97e by des:
tzcode: Silence warnings.

4a158fc030b5a31efdbad8b30c9a859df553ae3c by des:
depend-cleanup.sh: handle zic moving one level up.

1d9f3a37eb20305bfdd67788cfac5c51938226a4 by kib:
Stop cleaning MNT_LOCAL on unmount

6e1eabadcb1d554ab6c0ad8ce1d82f6748cc80b4 by kib:
ffs_syncvnode(): avoid a LoR for SU

f32db406504ece1b28f43dc816736e081fe22826 by sef:
Allow a comma-separated list in login class capabilities,



The failed test cases:

6 tests failed.
FAILED:  lib.libc.time.mktime_test.timegm_epoch

Error Message:
/usr/src/contrib/netbsd-tests/lib/libc/time/t_mktime.c:98: Expected errno 0, got 84, in t == (time_t)0

FAILED:  sys.net.if_tun_test.235704

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

FAILED:  usr.sbin.etcupdate.preworld_test.main

Error Message:
Returned non-success exit status 1

FAILED:  sys.aio.aio_test.aio_socket_blocking_short_write

Error Message:
Test case body timed out

FAILED:  sys.aio.aio_test.aio_socket_blocking_short_write_vectored

Error Message:
Test case body timed out

FAILED:  sys.aio.aio_test.aio_socket_short_write_cancel

Error Message:
/usr/src/tests/sys/aio/aio_test.c:1396: aio_error(&iocb) == EINPROGRESS not met