Build failed. https://zuul.opendev.org/t/openstack/buildset/d03f6361f9c849e8b608d58d2497511d - openstack-tox-docs https://zuul.opendev.org/t/openstack/build/e03bb766dfce408494ea8dca06812de4 : SUCCESS in 4m 46s - openstack-tox-py27 https://zuul.opendev.org/t/openstack/build/e0fbb904957c48aca36b23825de14767 : SUCCESS in 6m 41s - openstack-tox-py36 https://zuul.opendev.org/t/openstack/build/d4680904fc174cd7aeba7f7953dd2956 : SUCCESS in 6m 48s - openstack-tox-py37 https://zuul.opendev.org/t/openstack/build/427284481a8f426e901dc1affce434d4 : FAILURE in 6m 11s