Message 324464 - Python tracker

I was able to reproduce the issue with Win 10, current cpython @master.
All sequential test runs are good.
With parallel execution a race condition comes up, as Victor already mentioned.

I was able to track the issue to the teardown function of the TestCase
In parallel the cleanup of the modules crashed the other tests.

line 57: support.modules_cleanup(*self.modules_before)

Is it possible to manage the cleanup differently?