FreeBSD-stable-15-amd64-test - Build #374 - Still Unstable

FreeBSD-stable-15-amd64-test - Build #374 (6a6f96437527fcf2ad34b3ad9afffa182273ead5) - Still Unstable

Build information: https://ci.FreeBSD.org/job/FreeBSD-stable-15-amd64-test/374/
Full change log: https://ci.FreeBSD.org/job/FreeBSD-stable-15-amd64-test/374/changes
Full build log: https://ci.FreeBSD.org/job/FreeBSD-stable-15-amd64-test/374/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)

1f5dfc8da5807e8f8973ad21e63f460441773744 by kib:
libc/gen/err.c: remove 'extended error' herald from extended error

4c273b71a473ca571c331e5d9d8cedeed024649c by kib:
exterror: add support for the format specifiers in the extended error

ca345aa37b80f3ef8338651c2328e1777b86b43f by kib:
exterror: Add EXTERROR_VERBOSE env variable to control verbosity

6c797f50339c10c6cc1af7509cdd3d988894800e by kib:
vm/vm_mmap.c: inline erronous argument values for extended errors

a3b3ac646d9cd58a6c86f334aac343e75ba8187b by kib:
exterror.9: describe formatting of optional arguments

39a04a3f703e750b2eadf171fafc1690dbdee543 by kib:
exterr_test: loosen the error string pattern

12918e98320c0d1e98b7edc5a36b9087fa1242b9 by kib:
fs/fuse: use dedicated category per source file

39abebb332b116b3eb492f251b8786ca27ae7a7a by kib:
Add a script to auto-generate mapping from exterr category to source

567e77d177c0e3b021ccc4ab2b8a2e26fb0e51a3 by kib:
Add automatically generated file libc/gen/exterr_cat_filenames.h

e5b9182cdbc4b5684c0e40608e8901e1989d916b by kib:
exterr: in verbose mode, print the source file name

2b83f57072d396c74089f14f51694a2ce4038ea1 by kib:
man pages: provide some description for extended errors

a26a553c54de3e98464c054e068f7e5cf5085464 by kib:
libc/stdlib/Makefile: one line for each source file name

6197518ee90541a5e04d03dffda760b888d3a3e7 by kib:
libc: add glibc-compatible tdestroy(3)

8cbc9c011aef512d91c23c29f21c585d0823e883 by kib:
tdestroy(3) man page

6a6f96437527fcf2ad34b3ad9afffa182273ead5 by kib:
tdestroy(3): add tests



The failed test cases:

2 tests failed.
FAILED:  sys.netpfil.pf.route_to.prefer_ipv6_nexthop_mixed_af_random_table_ipv4

Error Message:
Target 2001:db8:4202::42:4 not selected after 10 attempts!

FAILED:  sys.netlink.test_netlink_message_writer.py.__test_cases_list__

Error Message:
Test program did not exit cleanly