Build failed. https://zuul.opendev.org/t/openstack/buildset/e0470e6f13a34706be36ffa4ca5cd7d6 - openstack-tox-docs https://zuul.opendev.org/t/openstack/build/0d2247bb59324da3b3188b51fcc5fdb0 : SUCCESS in 2m 54s - openstack-tox-py27 https://zuul.opendev.org/t/openstack/build/375e01d76f6742fda17997e9d1e6f1cb : SUCCESS in 2m 57s - openstack-tox-py36 https://zuul.opendev.org/t/openstack/build/21e397c735164d4bb7b9f891684e1d67 : SUCCESS in 2m 28s - openstack-tox-py37 https://zuul.opendev.org/t/openstack/build/b7dbe346f62044399585610ae69a5d53 : FAILURE in 2m 34s