FreeBSD-main-amd64-test - Build #24965 - Still Unstable

FreeBSD-main-amd64-test - Build #24965 (49a3780aeac3e6f53a3be8e3ce5210c28a205c2a) - Still Unstable

Build information: https://ci.FreeBSD.org/job/FreeBSD-main-amd64-test/24965/
Full change log: https://ci.FreeBSD.org/job/FreeBSD-main-amd64-test/24965/changes
Full build log: https://ci.FreeBSD.org/job/FreeBSD-main-amd64-test/24965/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)

8eaa6be80d6aef6a118fa854a860bfdaeb7ed753 by kib:
daemon(8): handle case of waitpid() returning without exited child

f54495100fbf8f662dc9cdeca4ba70ba31255bc9 by kib:
sys/syscallsubr.h: align definition of kern_fcntl_freebsd() on 32bit

bb4116576f2edf466ada3885cf851599ce7a4792 by markj:
rc.initdiskless: Disable soft-updates in mdmfs (again)

49a3780aeac3e6f53a3be8e3ce5210c28a205c2a by markj:
build: Order kernel-toolchain and buildkernel targets



The failed test cases:

3 tests failed.
FAILED:  sys.netinet6.test_ip6_output.py.TestIP6OutputLoopback::test_output6_self_tcp[ll-no_sav]

Error Message:
/usr/tests/atf_python/sys/net/tools.py:93: IndexError

FAILED:  sys.fs.tmpfs.times_test.empty

Error Message:
Test case was expecting a failure but none were raised

FAILED:  cddl.usr.sbin.zfsd.zfsd_unittest.main

Error Message:
Received signal 6