Build failed. https://zuul.opendev.org/t/openstack/buildset/437d9eb5a51e4a5bbb09bb43c1d72956 - openstack-tox-docs https://zuul.opendev.org/t/openstack/build/05859e578edd48e5bc5e5e1b82f3931a : FAILURE in 3m 20s - openstack-tox-py27 https://zuul.opendev.org/t/openstack/build/923e247528b14adcbab86536d78487be : SUCCESS in 3m 21s - openstack-tox-py36 https://zuul.opendev.org/t/openstack/build/a9ca6d2f73a34a098330ad5d163c5368 : SUCCESS in 3m 27s - openstack-tox-py37 https://zuul.opendev.org/t/openstack/build/2e006c17fd724e04ac34321a40731233 : SUCCESS in 4m 26s