Build failed. https://zuul.opendev.org/t/openstack/buildset/4a32ced4392d4389a8985a1c0d17e0b0 - openstack-tox-docs https://zuul.opendev.org/t/openstack/build/3231a9396ab34b2fb2c02993a15bcb28 : FAILURE in 4m 23s - openstack-tox-py36 https://zuul.opendev.org/t/openstack/build/1d42556e82b341399a8b3fea225e23a4 : SUCCESS in 3m 45s - openstack-tox-py37 https://zuul.opendev.org/t/openstack/build/37b7178ed81648eb98a59cff2e590e21 : SUCCESS in 5m 18s