Build failed. https://zuul.opendev.org/t/openstack/buildset/d1af6a472fd64f39b937915fb3b05fd7 - openstack-tox-docs https://zuul.opendev.org/t/openstack/build/7ebfe56db18b4e018d76e73d6b653749 : SUCCESS in 3m 47s - openstack-tox-py27 https://zuul.opendev.org/t/openstack/build/708e6a7c108d4f46ac544251d530a4db : FAILURE in 4m 30s - openstack-tox-py36 https://zuul.opendev.org/t/openstack/build/af6bcd5e6b1748eb8ee11264a0ac40f2 : SUCCESS in 3m 01s - openstack-tox-py37 https://zuul.opendev.org/t/openstack/build/e882235336664a7292bb93b91913c4e5 : FAILURE in 3m 19s