Build failed. https://zuul.opendev.org/t/openstack/buildset/ff0c8efb6c9848ffadcc4463fad4afd0 - openstack-tox-docs https://zuul.opendev.org/t/openstack/build/72b1ca6d9c884bc7b9fb010470c2da96 : FAILURE in 5m 55s - openstack-tox-py27 https://zuul.opendev.org/t/openstack/build/c0c1d48237094ac78c9853a8667b0323 : SUCCESS in 5m 42s - openstack-tox-py36 https://zuul.opendev.org/t/openstack/build/0ca8b4323b2542a58921b3ae14f4cbb1 : SUCCESS in 4m 53s - openstack-tox-py37 https://zuul.opendev.org/t/openstack/build/d8b73de50f5a4838b4adccc55b97d52f : SUCCESS in 5m 52s