Build failed. https://zuul.opendev.org/t/openstack/buildset/524cbbf85af34ae1aad0404f5a5dedeb - openstack-tox-docs https://zuul.opendev.org/t/openstack/build/1939a6fecf7d4d9992bbbdd2827cbdcf : FAILURE in 6m 18s - openstack-tox-py27 https://zuul.opendev.org/t/openstack/build/51e6fb741a2e4586ab78427f489ba962 : SUCCESS in 4m 44s - openstack-tox-py36 https://zuul.opendev.org/t/openstack/build/19cbe2fd787646188e0d2e841f63913f : SUCCESS in 4m 51s - openstack-tox-py37 https://zuul.opendev.org/t/openstack/build/60eb7be36ec94c979c41fa1f072e3c10 : SUCCESS in 6m 30s