Build failed. https://zuul.opendev.org/t/openstack/buildset/0a16414a1db74c588ef0d3feb97ed5e6 - openstack-tox-docs https://zuul.opendev.org/t/openstack/build/52fdd0a5b51b46f7bda67b9fa0b8221c : FAILURE in 3m 14s - openstack-tox-py27 https://zuul.opendev.org/t/openstack/build/c20643834c9e46ba95f5af5009aef5c4 : SUCCESS in 3m 16s - openstack-tox-py36 https://zuul.opendev.org/t/openstack/build/360841bd2a374e35a65dee2a1e49bd66 : SUCCESS in 3m 28s - openstack-tox-py37 https://zuul.opendev.org/t/openstack/build/633156bd42a04646937f259c87011687 : SUCCESS in 3m 30s