FreeBSD-main-amd64-test - Build #24223 - Still Unstable

FreeBSD-main-amd64-test - Build #24223 (6d3296f16a06bcaa49918799e683936711dcf9c9) - Still Unstable

Build information: https://ci.FreeBSD.org/job/FreeBSD-main-amd64-test/24223/
Full change log: https://ci.FreeBSD.org/job/FreeBSD-main-amd64-test/24223/changes
Full build log: https://ci.FreeBSD.org/job/FreeBSD-main-amd64-test/24223/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)

128f63cedc14ae21b35f74e11e2fe1a5659c58e8 by christos:
(s)tty: add support for IUTF8 input flag

9e589b0938579f3f4d89fa5c051f845bf754184d by christos:
tty: fix improper backspace behaviour for UTF8 characters when in

6d3296f16a06bcaa49918799e683936711dcf9c9 by christos:
teken: use __bitcount() instead of bitcount()



The failed test cases:

3 tests failed.
FAILED:  sys.netinet6.frag6.frag6_19.frag6_19

Error Message:
Global IPv6 statistics do not match: 19 != 20

FAILED:  usr.bin.file.file_test.contrib_file_tests

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

FAILED:  sys.fs.tmpfs.times_test.empty

Error Message:
Incorrect atime