Build failed. https://zuul.opendev.org/t/openstack/buildset/7bc67fdd05f24db9bcd172ba96b43d9b - openstack-tox-docs https://zuul.opendev.org/t/openstack/build/bbc2f907ad3d42eda9373bd1ec829b88 : SUCCESS in 5m 37s - openstack-tox-py27 https://zuul.opendev.org/t/openstack/build/06f741a66d9a46f6b6389cd962c04ddd : SUCCESS in 9m 58s - openstack-tox-py36 https://zuul.opendev.org/t/openstack/build/7de7d736791647429cb5e6f962110c4b : SUCCESS in 11m 41s - openstack-tox-py37 https://zuul.opendev.org/t/openstack/build/643b1a198a5d4be89e1277374c045e08 : FAILURE in 9m 34s