Build failed. https://zuul.opendev.org/t/openstack/buildset/7c543c5639bd4ddea72ad62d026bb731 - openstack-tox-docs https://zuul.opendev.org/t/openstack/build/d58ec82b59554fdc909cbafe741bb002 : SUCCESS in 4m 32s - openstack-tox-py27 https://zuul.opendev.org/t/openstack/build/f1be762bdfb04cc7bf865d62f41e126a : SUCCESS in 3m 19s - openstack-tox-py36 https://zuul.opendev.org/t/openstack/build/1c38963800fe4aca85e922d45471dc4c : FAILURE in 4m 08s - openstack-tox-py37 https://zuul.opendev.org/t/openstack/build/d25fc5e5563445a5a47355c1470c39ee : FAILURE in 3m 13s