[issue37245] Azure Pipeline 3.8 CI: multiple tests hung and timed out on macOS 10.13

[STINNER Victor]

STINNER Victor <vstinner at python.org> added the comment:

> I'm still seeing this, maybe 1 in 20 builds, so it's semi-random. A new deadlock, maybe?

It seems like only the jobs on Azure are killed by timeout. The jobs on macOS buildbots look fine. Maybe macOS on Azure is running slower and we should just increase the timeout?

The bug still occurs:

https://github.com/python/cpython/pull/15651
https://dev.azure.com/Python/cpython/_build/results?buildId=49786&view=results

0:49:27 load avg: 1.41 [419/419/6] test_threading crashed (Exit code 1)

6 tests failed:
    test_concurrent_futures test_functools test_importlib
    test_multiprocessing_forkserver test_multiprocessing_spawn
    test_threading

The whole job was killed after 57 minutes.

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<https://bugs.python.org/issue37245>
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