Build failed. https://zuul.opendev.org/t/openstack/buildset/330250b02a204d7e84ed79bd3961ec51 - openstack-tox-docs https://zuul.opendev.org/t/openstack/build/6b3d3025fcec47fd87990c19d7e90391 : SUCCESS in 3m 31s - openstack-tox-py27 https://zuul.opendev.org/t/openstack/build/3ba58f4d79bd4e7ba0ad94052136cc8b : SUCCESS in 6m 46s - openstack-tox-py36 https://zuul.opendev.org/t/openstack/build/382dca5b15764f919fe72524f4b9c6b6 : SUCCESS in 6m 57s - openstack-tox-py37 https://zuul.opendev.org/t/openstack/build/f2553514e52f4988985219fc79978a75 : FAILURE in 5m 38s