Build failed. https://zuul.opendev.org/t/openstack/buildset/7496afc284ef47738b4bddd16dd7d4c6 - openstack-tox-docs https://zuul.opendev.org/t/openstack/build/83b7bf70cb7145c7a3d0c04045bb66c2 : SUCCESS in 2m 53s - openstack-tox-py27 https://zuul.opendev.org/t/openstack/build/869f7abc0d3d4e6b870acde828066627 : SUCCESS in 4m 51s - openstack-tox-py36 https://zuul.opendev.org/t/openstack/build/88431b4569124ce49ad72c2c99ee6ca2 : FAILURE in 3m 45s - openstack-tox-py37 https://zuul.opendev.org/t/openstack/build/97f97031eba14b79a8344656975bc4b2 : SUCCESS in 4m 30s