New warning on AMD64 RHEL8 LTO + PGO 3.x:
https://buildbot.python.org/all/#/builders/284/builds/171
...
test_killed_child (test.test_concurrent_futures.ProcessPoolSpawnProcessPoolExecutorTest) ... 0.26s ok
test_map (test.test_concurrent_futures.ProcessPoolSpawnProcessPoolExecutorTest) ... 0.29s ok
test_map_chunksize (test.test_concurrent_futures.ProcessPoolSpawnProcessPoolExecutorTest) ... 0.31s ok
test_map_exception (test.test_concurrent_futures.ProcessPoolSpawnProcessPoolExecutorTest) ... 0.30s ok
test_map_timeout (test.test_concurrent_futures.ProcessPoolSpawnProcessPoolExecutorTest) ... 6.29s ok
test_max_workers_negative (test.test_concurrent_futures.ProcessPoolSpawnProcessPoolExecutorTest) ... 0.32s ok
test_max_workers_too_large (test.test_concurrent_futures.ProcessPoolSpawnProcessPoolExecutorTest) ... skipped 'Windows-only process limit'
test_no_stale_references (test.test_concurrent_futures.ProcessPoolSpawnProcessPoolExecutorTest) ... 0.29s ok
test_ressources_gced_in_workers (test.test_concurrent_futures.ProcessPoolSpawnProcessPoolExecutorTest) ... 1.58s ok
test_shutdown_race_issue12456 (test.test_concurrent_futures.ProcessPoolSpawnProcessPoolExecutorTest) ... 0.30s Warning -- reap_children() reaped child process 10340
ok
test_submit (test.test_concurrent_futures.ProcessPoolSpawnProcessPoolExecutorTest) ... 0.29s ok
test_submit_keyword (test.test_concurrent_futures.ProcessPoolSpawnProcessPoolExecutorTest) ... 0.31s ok
...