[issue43592] test_importlib: test_multiprocessing_pool_circular_import() fails with "Too many open files" error on os.pipe()

[STINNER Victor]

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

test_importlib only fails *randomly* on x86-64 macOS 3.x.

For example, the build 970 is a success (but orange): "Tests result: FAILURE then SUCCESS". test_importlib failed with too many open files, and then passed.

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Python tracker <report at bugs.python.org>
<https://bugs.python.org/issue43592>
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