Build failed. https://zuul.opendev.org/t/openstack/buildset/7970494e9eaf4b9da337d413b8d0b1ff - openstack-tox-docs https://zuul.opendev.org/t/openstack/build/f8b2954d3b6940079411be7aa67c668a : FAILURE in 4m 10s - openstack-tox-py27 https://zuul.opendev.org/t/openstack/build/b2058e1447ef4a48bd476f7998493207 : SUCCESS in 2m 48s - openstack-tox-py36 https://zuul.opendev.org/t/openstack/build/eef9deee0ceb42cd8d9f13957c2905a9 : SUCCESS in 3m 11s - openstack-tox-py37 https://zuul.opendev.org/t/openstack/build/cb0e36d3797b4117b84994f3554b7e30 : SUCCESS in 4m 34s