$ ./python -m test test_logging -m test_udp_reconnection -F -j100 -v== CPython 3.13.0a0 (heads/remove_structmember:438462a3a0, Jul 25 2023, 14:21:21) [GCC 13.1.1 20230614 (Red Hat 13.1.1-4)]== Linux-6.3.12-200.fc38.x86_64-x86_64-with-glibc2.37 little-endian== Python build: debug== cwd: /home/vstinner/python/main/build/test_python_694431æ== CPU count: 12== encodings: locale=UTF-8, FS=utf-80:00:00 load avg: 4.60 Run tests in parallel using 100 child processes(...)0:00:10 load avg: 20.39 [ 18] test_logging passedtest_udp_reconnection (test.test_logging.IPv6SysLogHandlerTest.test_udp_reconnection) ... oktest_udp_reconnection (test.test_logging.SysLogHandlerTest.test_udp_reconnection) ... oktest_udp_reconnection (test.test_logging.UnixSysLogHandlerTest.test_udp_reconnection) ... ok----------------------------------------------------------------------Ran 3 tests in 0.305sOK0:00:10 load avg: 20.39 [ 19/1] test_logging failed (1 failure)test_udp_reconnection (test.test_logging.IPv6SysLogHandlerTest.test_udp_reconnection) ... FAILtest_udp_reconnection (test.test_logging.SysLogHandlerTest.test_udp_reconnection) ... oktest_udp_reconnection (test.test_logging.UnixSysLogHandlerTest.test_udp_reconnection) ... ok======================================================================FAIL: test_udp_reconnection (test.test_logging.IPv6SysLogHandlerTest.test_udp_reconnection)----------------------------------------------------------------------Traceback (most recent call last):  File "/home/vstinner/python/main/Lib/test/test_logging.py", line 2101, in test_udp_reconnection    self.assertEqual(self.log_output, b'<11>sp\xc3\xa4m\x00')AssertionError: b'' != b'<11>sp\xc3\xa4m\x00'(...)