Build failed. https://zuul.opendev.org/t/openstack/buildset/5d4c4ae2f8a54aa4b51ff4270b82a22a - openstack-tox-docs https://zuul.opendev.org/t/openstack/build/c1e3be9fbe5a4d569a92a8040a637881 : FAILURE in 3m 40s - openstack-tox-py27 https://zuul.opendev.org/t/openstack/build/b10df6235df04b368a7b2580ba0f8cff : FAILURE in 5m 51s - openstack-tox-py36 https://zuul.opendev.org/t/openstack/build/6b40e45d103f4c729e161d6848a56fe6 : FAILURE in 3m 51s - openstack-tox-py37 https://zuul.opendev.org/t/openstack/build/3c97055225f242a48a8127e0e7381f3f : FAILURE in 3m 58s