I think previously also the same test failed but not as consistently as it is now. I see that consistently the same test case is failing.
Dec 17 01:35:33 t/010_logical_decoding_timelines....# Looks like you planned 13 tests but ran 9. Dec 17 01:35:33 # Looks like your test exited with 255 just after 9. Dec 17 01:35:33 dubious Dec 17 01:35:33 Test returned status 255 (wstat 65280, 0xff00) Dec 17 01:35:33 DIED. FAILED tests 10-13 Dec 17 01:35:33 Failed 4/13 tests, 69.23% okay One of the buildfarm logs [1] seems to indicate that it started failing after commit 95f43fee9 On Windows, wait a little to see if ERROR_ACCESS_DENIED goes away). I haven't done any detailed analysis, so I could be wrong as well. Thoughts? [1] - https://buildfarm.postgresql.org/cgi-bin/show_log.pl?nm=jacana&dt=2019-12-17%2004%3A16%3A40 -- With Regards, Amit Kapila. EnterpriseDB: http://www.enterprisedb.com