FreeBSD-stable-14-amd64-test - Build #156 - Still unstable

FreeBSD-stable-14-amd64-test - Build #156 (c21038f55230693b46cef0d900ff4fa90c05fcf6) - Still unstable

Build information: https://ci.FreeBSD.org/job/FreeBSD-stable-14-amd64-test/156/
Full change log: https://ci.FreeBSD.org/job/FreeBSD-stable-14-amd64-test/156/changes
Full build log: https://ci.FreeBSD.org/job/FreeBSD-stable-14-amd64-test/156/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)

52415bfc0adf29a4d600a5a55b5f6b7c5f93fa4a by markj:
bhyve(8): fix manpage formatting

1e99535be2ea9c0ef8bc57fc885e9c01fa95d2dd by emaste:
fflush: Split a temporary variable in two.

c21038f55230693b46cef0d900ff4fa90c05fcf6 by dchagin:
arm64: Use the Linux sigframe to restore registers



The failed test cases:

4 tests failed.
FAILED:  sbin.ping.test_ping.py.__test_cases_list__

Error Message:
Test case list wrote to stderr

FAILED:  sys.netinet.forward.fwd_ip_icmp_gw_slow_success

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

FAILED:  sys.netpfil.pf.scrub_compat.max_mss_v4

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