[issue39029] TestMaildir.test_clean fails randomly under parallel tests

[Serhiy Storchaka]

Serhiy Storchaka <storchaka+cpython at gmail.com> added the comment:

If TESTFN is the same in different processes, there is something wrong in the code for running parallel tests.

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Python tracker <report at bugs.python.org>
<https://bugs.python.org/issue39029>
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