Build failed. https://zuul.opendev.org/t/openstack/buildset/c08fe11602234dfcae4ba4d1930c9630 - openstack-tox-docs https://zuul.opendev.org/t/openstack/build/e9a01e7c3f3944118d5e0d9dc0d9e9fd : SUCCESS in 5m 13s - openstack-tox-py27 https://zuul.opendev.org/t/openstack/build/ec2419ec81124d5ba4e00174727965a2 : SUCCESS in 5m 21s - openstack-tox-py36 https://zuul.opendev.org/t/openstack/build/7de602f2a03649e7bbe6639bf319dbec : SUCCESS in 7m 22s - openstack-tox-py37 https://zuul.opendev.org/t/openstack/build/2d422c5d1dcd4bb185a6e12524f8aad2 : FAILURE in 4m 28s