FreeBSD-stable-14-amd64-test - Build #2047 - Still Unstable

FreeBSD-stable-14-amd64-test - Build #2047 (e16857e08feaf2c59f0f6cf83ac8f1d6eddb0b4d) - Still Unstable

Build information: https://ci.FreeBSD.org/job/FreeBSD-stable-14-amd64-test/2047/
Full change log: https://ci.FreeBSD.org/job/FreeBSD-stable-14-amd64-test/2047/changes
Full build log: https://ci.FreeBSD.org/job/FreeBSD-stable-14-amd64-test/2047/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)

cd2c1451dc17520fc2cb8939fa8d8b1d3f9508e8 by des:
share/mk: Add sccache suport for WITH_CCACHE_BUILD option

e16857e08feaf2c59f0f6cf83ac8f1d6eddb0b4d by des:
src.conf(5): Suggest using ccache4



The failed test cases:

3 tests failed.
FAILED:  sys.netinet6.ndp.ndp_prefix_lifetime_extend

Error Message:
Unexpected lifetimes: 

FAILED:  sys.kern.socket_accf.http

Error Message:
/usr/src/tests/sys/kern/socket_accf.c:129: accept(l, NULL, 0) == -1 not met

FAILED:  sys.netinet.fibs_test.same_ip_multiple_ifaces_fib0

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