Build failed. https://zuul.opendev.org/t/openstack/buildset/a69c3b85d8994332b01e41b019c12e94 - openstack-tox-docs https://zuul.opendev.org/t/openstack/build/6f5c23213db845cfb30314bfbd46f60f : SUCCESS in 3m 49s - openstack-tox-py27 https://zuul.opendev.org/t/openstack/build/68f8d68299cb4617976df5f9a2e21a55 : SUCCESS in 3m 33s - openstack-tox-py36 https://zuul.opendev.org/t/openstack/build/18275fd7f59943b395694ffd216ed29d : SUCCESS in 2m 43s - openstack-tox-py37 https://zuul.opendev.org/t/openstack/build/6cc16bf540bc4bfab74a702995ad3d97 : FAILURE in 2m 57s