Build failed. https://zuul.opendev.org/t/openstack/buildset/c96fd167459340998dde5ba464a6e94f - openstack-tox-docs https://zuul.opendev.org/t/openstack/build/3c7dd7b3fa674e25a8a937efa8b7e5da : SUCCESS in 5m 29s - openstack-tox-py27 https://zuul.opendev.org/t/openstack/build/b5f424304eb14ceb9b8e82068e1f5a62 : SUCCESS in 4m 22s - openstack-tox-py36 https://zuul.opendev.org/t/openstack/build/15613132a9324feb979a9fc85a256f80 : SUCCESS in 3m 31s - openstack-tox-py37 https://zuul.opendev.org/t/openstack/build/739903b36cf444f2ae0f6c769e9a5ca2 : FAILURE in 3m 42s