Build failed. https://zuul.opendev.org/t/openstack/buildset/a7085c70c36f4fc58a811dd9b5f54a2a - openstack-tox-docs https://zuul.opendev.org/t/openstack/build/3bef987459c94927a80e5da116b91b58 : SUCCESS in 14m 58s - openstack-tox-py27 https://zuul.opendev.org/t/openstack/build/136a8b3619994d8391f34a680385149c : SUCCESS in 9m 50s - openstack-tox-py36 https://zuul.opendev.org/t/openstack/build/0f01d91e19c24e9cb35978fe2e85f78f : FAILURE in 10m 17s - openstack-tox-py37 https://zuul.opendev.org/t/openstack/build/9e2dbdb4ac144d57bd8b6b63b7565973 : SUCCESS in 10m 59s