Build failed. https://zuul.opendev.org/t/openstack/buildset/ea0c9f527d7f41d29fdbe40725b633b9 - openstack-tox-docs https://zuul.opendev.org/t/openstack/build/0604bd5cdd9e43dfa6d2e46e518c6f74 : SUCCESS in 3m 58s - openstack-tox-py27 https://zuul.opendev.org/t/openstack/build/f56b1a52be0f44378c003b3f6902b637 : SUCCESS in 4m 42s - openstack-tox-py36 https://zuul.opendev.org/t/openstack/build/5bbcd397493e473894662eb50e0a920f : SUCCESS in 5m 47s - openstack-tox-py37 https://zuul.opendev.org/t/openstack/build/989920b46a14435683eb8f27215bd6ff : FAILURE in 6m 23s