Build failed. https://zuul.opendev.org/t/openstack/buildset/0caa2d1841774724bb61e12e5c6a17f5 - openstack-tox-docs https://zuul.opendev.org/t/openstack/build/240d1c0b35a542c58bc48384e036b2ed : FAILURE in 10m 00s - openstack-tox-py27 https://zuul.opendev.org/t/openstack/build/2037a3805e2845bdaf770e7c21cb8f79 : SUCCESS in 6m 12s - openstack-tox-py36 https://zuul.opendev.org/t/openstack/build/d7ad189e93ea455ea1122a89bf1f883b : SUCCESS in 6m 45s - openstack-tox-py37 https://zuul.opendev.org/t/openstack/build/4dfd26a883c147c28c8c3cb748b99f67 : SUCCESS in 9m 42s