Build failed. https://zuul.opendev.org/t/openstack/buildset/65e24fa6f59a4c3ab4222ce32aad4ba3 - openstack-tox-docs https://zuul.opendev.org/t/openstack/build/09d8076736424011928428afb9c718db : SUCCESS in 2m 47s - openstack-tox-py27 https://zuul.opendev.org/t/openstack/build/88c6463b35b84b2f985a053d8823123b : SUCCESS in 3m 30s - openstack-tox-py36 https://zuul.opendev.org/t/openstack/build/6f5b853adc254c0cb8c6af3187ee2dfd : FAILURE in 3m 13s - openstack-tox-py37 https://zuul.opendev.org/t/openstack/build/180cbd6d3735408ab5e538eacece2dad : FAILURE in 2m 47s