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[Python-Dev] Windows 10 build agent failures

On Sun, May 6, 2018 at 3:05 AM, Paul Goins <general at vultaire.net> wrote:
> Hi,
> Just kind of "looking around" at stuff I can help with, and I noticed a few
> days ago that Windows 10 AMD64 builds of Python 3.6/3.7/3.x are generally
> failing.
> It seems like the failures started April 16th around 1am per BuildBot and
> went from consistently passing to consistently failing.  The errors appear
> to be timeouts; the test runs are going over 15 minutes.
> I can run the tests locally and things seem fine.
> The one thing which seems to have changed is, under the "10 slowest tests"
> header, test_io has shot up in terms of time to complete:
> 3.6: 2 min 13 sec to 9 min 25 sec
> 3.7: 2 min 10 sec to 9 min 26 sec
> 3.x: 3 min 39 sec to 9 min 17 sec
> Locally this test suite runs in around 36 seconds.  I see no real change
> between running one of the last "good" changesets versus the current head of
> master.  I'm suspecting an issue on the build agent perhaps?  Thoughts?

We have an open issue for this at https://bugs.python.org/issue33355.