Build failed. https://zuul.opendev.org/t/openstack/buildset/14bdba81f7804bf5a1aab0c8931137f0 - openstack-tox-docs https://zuul.opendev.org/t/openstack/build/61d5559fd78f4ef7bb1c49b8cb4ff84c : FAILURE in 5m 11s - openstack-tox-py27 https://zuul.opendev.org/t/openstack/build/86caf755307d44f6bc16962d568a0525 : SUCCESS in 5m 37s - openstack-tox-py36 https://zuul.opendev.org/t/openstack/build/82540a8bab5844c3abb5cd9ab5cd337e : SUCCESS in 4m 53s - openstack-tox-py37 https://zuul.opendev.org/t/openstack/build/e9ef9454bf8d41d69a57793810329aaf : SUCCESS in 5m 55s