Build failed. https://zuul.opendev.org/t/openstack/buildset/d35dd4cd6b52474a96d98da9d3e77f7e - openstack-tox-docs https://zuul.opendev.org/t/openstack/build/456c6d772322427f80eebb1b2b48a635 : SUCCESS in 2m 47s - openstack-tox-py27 https://zuul.opendev.org/t/openstack/build/32cbcb961a9c4e55a45918ca89c788cb : SUCCESS in 3m 22s - openstack-tox-py36 https://zuul.opendev.org/t/openstack/build/a8e9f79dbca04d9b81fb082805038843 : FAILURE in 2m 47s - openstack-tox-py37 https://zuul.opendev.org/t/openstack/build/c3a47b7f6ed140688aa5e47475b74a29 : FAILURE in 2m 35s