[issue33532] test_multiprocessing_forkserver: TestIgnoreEINTR.test_ignore() fails on Travis CI

[STINNER Victor]

STINNER Victor <vstinner at redhat.com> added the comment:

test_ignore() starts to fail more and more often on Travis CI for an unknown reason.

https://travis-ci.org/python/cpython/jobs/385562187

== CPU count: 48
(...)
Run tests in parallel using 4 child processes
(...)
0:07:38 load avg: 128.04 [415/416/1] test_multiprocessing_forkserver failed -- running: test_concurrent_futures (378 sec)
(...)
======================================================================
ERROR: test_ignore (test.test_multiprocessing_forkserver.TestIgnoreEINTR)
----------------------------------------------------------------------
Traceback (most recent call last):
  File "/home/travis/build/python/cpython/Lib/test/_test_multiprocessing.py", line 4359, in test_ignore
    os.kill(p.pid, signal.SIGUSR1)
ProcessLookupError: [Errno 3] No such process

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<https://bugs.python.org/issue33532>
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