Build failed. https://zuul.opendev.org/t/openstack/buildset/849488c97df04d35b28b24a7bb648963 - openstack-tox-docs https://zuul.opendev.org/t/openstack/build/4a7a8a713db54ed99856970d6f93a4fa : SUCCESS in 3m 19s - openstack-tox-py27 https://zuul.opendev.org/t/openstack/build/1df88c6bf925427ea0bd1961a45b14aa : SUCCESS in 3m 21s - openstack-tox-py36 https://zuul.opendev.org/t/openstack/build/d39f73134e0f486da02da951189f6b6e : SUCCESS in 3m 33s - openstack-tox-py37 https://zuul.opendev.org/t/openstack/build/72c605cb45454999a5d10aef581dd39e : FAILURE in 4m 22s