Build failed. https://zuul.opendev.org/t/openstack/buildset/a817f636697d44bd8273c242b3be35b8 - openstack-tox-docs https://zuul.opendev.org/t/openstack/build/b30a2593e0d349ddaf54dd5f5a60cf9d : SUCCESS in 5m 02s - openstack-tox-py27 https://zuul.opendev.org/t/openstack/build/b0339d0d476847fc8cc94262d913b305 : SUCCESS in 6m 15s - openstack-tox-py36 https://zuul.opendev.org/t/openstack/build/e34f39ce0c9a4dd4b973e3cf1c69f8ea : SUCCESS in 5m 14s - openstack-tox-py37 https://zuul.opendev.org/t/openstack/build/6640213e46af4c4ea7ca22c14ba2c8cd : FAILURE in 4m 21s