Build failed. https://zuul.opendev.org/t/openstack/buildset/44a78044e94245ebafc01fd6a1b1158a - openstack-tox-docs https://zuul.opendev.org/t/openstack/build/6c8ac8f3802141a58f3faacbe3ad5332 : FAILURE in 3m 39s - openstack-tox-py27 https://zuul.opendev.org/t/openstack/build/c9b4f3f2fc6742d48694de2fe338292c : FAILURE in 6m 17s - openstack-tox-py36 https://zuul.opendev.org/t/openstack/build/f56d794f97ae4d96bde012cf4e28a795 : FAILURE in 7m 06s - openstack-tox-py37 https://zuul.opendev.org/t/openstack/build/7d30dddf35c54ecabf09630dffe4e9d5 : FAILURE in 4m 26s