Build failed. https://zuul.opendev.org/t/openstack/buildset/1d48b87a81d448b8b916808fb255874a - openstack-tox-docs https://zuul.opendev.org/t/openstack/build/d42d5203d704424c910257af0fbdca29 : FAILURE in 6m 16s - openstack-tox-py27 https://zuul.opendev.org/t/openstack/build/664d098c0feb4e918cb91ca5fdfc8a08 : SUCCESS in 7m 53s - openstack-tox-py36 https://zuul.opendev.org/t/openstack/build/483ecd072a4a45d3a07fd5d59548bad1 : SUCCESS in 8m 38s - openstack-tox-py37 https://zuul.opendev.org/t/openstack/build/de4e92f2cdbb49628815626f6fe4ca99 : SUCCESS in 6m 56s