Build failed. https://zuul.opendev.org/t/openstack/buildset/2d34815c2ec94a64b650e2b1c6bc533b - openstack-tox-docs https://zuul.opendev.org/t/openstack/build/3ac9b2132dee4f628f89e23a05a62626 : FAILURE in 6m 29s - openstack-tox-py27 https://zuul.opendev.org/t/openstack/build/24dba539ae7d402dad6dadd8df662c0d : SUCCESS in 5m 38s - openstack-tox-py36 https://zuul.opendev.org/t/openstack/build/d28b56dcd4dd4060ba1c8d1cbdad5a1e : SUCCESS in 6m 19s - openstack-tox-py37 https://zuul.opendev.org/t/openstack/build/5a15bd2e31714467a320eaa576fa6928 : SUCCESS in 7m 36s