Build failed. - openstack-tox-docs https://zuul.opendev.org/t/openstack/build/697575a9390c4c4e8b9f1b638a915d45 : SUCCESS in 4m 09s - openstack-tox-py27 https://zuul.opendev.org/t/openstack/build/f26adc3bae2240e5913fdb32dbdfe315 : FAILURE in 2m 53s - openstack-tox-py36 https://zuul.opendev.org/t/openstack/build/4784a43fdcf04e52a1d9960534cfb7ef : SUCCESS in 4m 18s - openstack-tox-py37 https://zuul.opendev.org/t/openstack/build/b07da512c4a44f74a46fd0a358d0823d : SUCCESS in 5m 03s