Build failed. https://zuul.opendev.org/t/openstack/buildset/3e0af1bb669a43ada4b1efaac19d6818 - openstack-tox-docs https://zuul.opendev.org/t/openstack/build/9ae87c595ba94bdba8e5a3a79b64328e : FAILURE in 3m 35s - openstack-tox-py27 https://zuul.opendev.org/t/openstack/build/4a955de49cc94f17b5ec637401a7b167 : SUCCESS in 2m 50s - openstack-tox-py36 https://zuul.opendev.org/t/openstack/build/1865827e73ba4541a97e371dbfee396c : SUCCESS in 3m 15s - openstack-tox-py37 https://zuul.opendev.org/t/openstack/build/64ee67176b8b496a93f8a66f8e178bb5 : SUCCESS in 3m 28s