Build failed. https://zuul.opendev.org/t/openstack/buildset/411b5fd322fc4807a94ebd1544cbdd4d - openstack-tox-docs https://zuul.opendev.org/t/openstack/build/3c83aed250604970a6f8a19b8dfc7729 : SUCCESS in 4m 08s - openstack-tox-py27 https://zuul.opendev.org/t/openstack/build/2074115bbda9443fad6436a0e2064073 : FAILURE in 4m 34s - openstack-tox-py36 https://zuul.opendev.org/t/openstack/build/3a0f112601474a63a3771a3206f64ba2 : SUCCESS in 3m 23s - openstack-tox-py37 https://zuul.opendev.org/t/openstack/build/1a8af4a0867c4f62b8dcb6212f34786a : FAILURE in 4m 01s