Build failed. https://zuul.opendev.org/t/openstack/buildset/7e4c02861cfe4e058a9d7b7a3ef8dfd1 - openstack-tox-docs https://zuul.opendev.org/t/openstack/build/e94b3bbfabd749d49f0645f6ad2212db : FAILURE in 4m 14s - openstack-tox-py27 https://zuul.opendev.org/t/openstack/build/5cf4dd711ed440e4b0f24084ba8872b3 : FAILURE in 4m 19s - openstack-tox-py36 https://zuul.opendev.org/t/openstack/build/d680e5b50f274e8c98bd6f70c9661d8d : FAILURE in 4m 15s - openstack-tox-py37 https://zuul.opendev.org/t/openstack/build/77acca1395034b5b84955d953525bb4e : FAILURE in 4m 23s