Build failed. https://zuul.opendev.org/t/openstack/buildset/7916a305aaf34987b15f8fabf641c4d3 - openstack-tox-docs https://zuul.opendev.org/t/openstack/build/fbe4ac880672403b8eaf8361853cd805 : SUCCESS in 3m 51s - openstack-tox-py27 https://zuul.opendev.org/t/openstack/build/a3353b5c27af4dfd943bdd67574a6c53 : SUCCESS in 5m 50s - openstack-tox-py36 https://zuul.opendev.org/t/openstack/build/41873a34ee734062bb43a016f196f8f8 : SUCCESS in 6m 22s - openstack-tox-py37 https://zuul.opendev.org/t/openstack/build/a19f9b5a74714e8a86e525186e864628 : FAILURE in 5m 06s