Looks like they added some new warnings that are causing the docs build to fail (e.g. https://travis-ci.org/
python/cpython/jobs/232903226 and https://travis-ci.org/ python/cpython/jobs/232897796) .I will see if I have time to fix this before I leave for PyCon US today, but there's no guarantee. If someone has time to fix this then I've opened https://bugs.python. org/issue30380to track the problem and give my take on a solution.
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