s390x Fedora LTO + PGO 3.x:
https://buildbot.python.org/all/#/builders/460/builds/364
0:15:21 load avg: 0.00 [423/423/1] test_multiprocessing_fork crashed (Exit code 1)
Timeout (0:15:00)!
Thread 0x000003ff83dff910 (most recent call first):
File "/home/dje/cpython-buildarea/3.x.edelsohn-fedora-z.lto-pgo/build/Lib/multiprocessing/connection.py", line 384 in _recv
File "/home/dje/cpython-buildarea/3.x.edelsohn-fedora-z.lto-pgo/build/Lib/multiprocessing/connection.py", line 419 in _recv_bytes
File "/home/dje/cpython-buildarea/3.x.edelsohn-fedora-z.lto-pgo/build/Lib/multiprocessing/connection.py", line 255 in recv
File "/home/dje/cpython-buildarea/3.x.edelsohn-fedora-z.lto-pgo/build/Lib/multiprocessing/pool.py", line 600 in _handle_results
File "/home/dje/cpython-buildarea/3.x.edelsohn-fedora-z.lto-pgo/build/Lib/threading.py", line 888 in run
File "/home/dje/cpython-buildarea/3.x.edelsohn-fedora-z.lto-pgo/build/Lib/threading.py", line 950 in _bootstrap_inner
File "/home/dje/cpython-buildarea/3.x.edelsohn-fedora-z.lto-pgo/build/Lib/threading.py", line 908 in _bootstrap
Thread 0x000003ff976f8b20 (most recent call first):
File "/home/dje/cpython-buildarea/3.x.edelsohn-fedora-z.lto-pgo/build/Lib/multiprocessing/pool.py", line 673 in _help_stuff_finish
File "/home/dje/cpython-buildarea/3.x.edelsohn-fedora-z.lto-pgo/build/Lib/multiprocessing/pool.py", line 693 in _terminate_pool
File "/home/dje/cpython-buildarea/3.x.edelsohn-fedora-z.lto-pgo/build/Lib/multiprocessing/util.py", line 224 in __call__
File "/home/dje/cpython-buildarea/3.x.edelsohn-fedora-z.lto-pgo/build/Lib/multiprocessing/pool.py", line 655 in terminate
File "/home/dje/cpython-buildarea/3.x.edelsohn-fedora-z.lto-pgo/build/Lib/test/_test_multiprocessing.py", line 2546 in test_terminate
(...)
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