On Thu, 7 Jun 2018 at 06:08 Victor Stinner <vstinner@redhat.com> wrote:
2018-06-07 5:36 GMT+02:00 Brett Cannon <brett@python.org>:
>> In the meanwhile, AppVeyor seems stable again. Would it be possible to
>> re-enable it in all stable branches?
> It was never turned off, but if you mean make it required again then yes.

Yes, I mean making it required again... but yesterday I made progress
on the super annoying test_asyncio random failure, and it seems like a
major regression in ProactorEventLoop on Windows:

Calling pause_reading() / resume_reading() of a proactor transport can
lead to data loss :-(

Right now, I would prefer to not make any Windows CI required, until
the test is either fixed or skipped. The failure rate is way too high
(25% at least, maybe even 50%?).

I'm working on a fix, but it's super complex :-( I would need an IOCP
guru and an asyncio guru to help me here. Maybe the short term fix is
to first skip the test, since the bug is know well identified, and I'm
easily able to reproduce the failure.

I'll leave that call up to you since you're putting in the work. If you disable the test then I'm comfortable with makingĀ  AppVeyor required again, otherwise with a failure rate that high we shouldn't require any Windows status check.