Build failed. https://zuul.opendev.org/t/openstack/buildset/e6e736e600454e9fb597c4e0600f8568 - openstack-tox-docs https://zuul.opendev.org/t/openstack/build/9fb64775ea3349e5982f80e5fa399f22 : FAILURE in 5m 15s - openstack-tox-py27 https://zuul.opendev.org/t/openstack/build/4e250fa828384ff9b23bccc3025c4d40 : FAILURE in 4m 34s - openstack-tox-py36 https://zuul.opendev.org/t/openstack/build/9bd98371099f441dbb924a77ba0f7ece : FAILURE in 5m 08s - openstack-tox-py37 https://zuul.opendev.org/t/openstack/build/4ab8e1cb340e43b293f78a992759a746 : FAILURE in 3m 51s