Build failed. https://zuul.opendev.org/t/openstack/buildset/df5efb1e3b344c6bb03b03e43ba404e7 - openstack-tox-docs https://zuul.opendev.org/t/openstack/build/d7ff379cf3944197bfadd43ddb0c50e3 : SUCCESS in 3m 30s - openstack-tox-py27 https://zuul.opendev.org/t/openstack/build/7a8fc641bcb245968b41c8f8bbecbbad : SUCCESS in 3m 37s - openstack-tox-py36 https://zuul.opendev.org/t/openstack/build/1b77891c0d814843b5338fa172465276 : FAILURE in 2m 59s - openstack-tox-py37 https://zuul.opendev.org/t/openstack/build/03db90a777504ef3bd8253a809d3734a : FAILURE in 3m 58s