FreeBSD-stable-14-amd64-test - Build #430 - Still Unstable

FreeBSD-stable-14-amd64-test - Build #430 (47ee352ffda9f5fbd872ea926e721b7b7cde936b) - Still Unstable

Build information: https://ci.FreeBSD.org/job/FreeBSD-stable-14-amd64-test/430/
Full change log: https://ci.FreeBSD.org/job/FreeBSD-stable-14-amd64-test/430/changes
Full build log: https://ci.FreeBSD.org/job/FreeBSD-stable-14-amd64-test/430/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)

3ba93b50d6fa7733dd80158f162faf33a216b5b0 by kib:
nullfs: Add the vfs.nullfs.cache_nodes sysctl to control nocache default

a79bb016d9cf261a4afa0f6fe1a0c8d3ce43f298 by kib:
nullfs_mount(): remove unneeded cast

adcb01c08e849bee32b10b214f59d6bcf8ea46ea by kib:
nullfs: add -o cache

ea8d7263d93e3e32d8123da5f711446a37cd1722 by kib:
mount_nullfs(8): document -o cache and vfs.nullfs.cache_vnodes

37ab169e38e2df7dbb9a8cae24add6f2bff83eda by kib:
nullfs_mount(): fix whitespace

47ee352ffda9f5fbd872ea926e721b7b7cde936b by kib:
mount_nullfs(8): fix typo



The failed test cases:

2 tests failed.
FAILED:  sys.netinet6.test_ip6_output.py.TestIP6OutputScope::test_output6_linklocal_scope[ll_differentif1]

Error Message:
/usr/local/lib/python3.9/multiprocessing/connection.py:383: EOFError

FAILED:  sys.netlink.test_netlink_message_writer.py.__test_cases_list__

Error Message:
Test program did not exit cleanly