Build failed. https://zuul.opendev.org/t/openstack/buildset/4e3513eaa69f4d6eb2bbdc88477ee1de - openstack-tox-docs https://zuul.opendev.org/t/openstack/build/4592cd98b642412a839d232f145f4d8a : FAILURE in 5m 54s - openstack-tox-py27 https://zuul.opendev.org/t/openstack/build/60bef174ee8d40029cc6bf8c3a7f44b9 : FAILURE in 4m 51s - openstack-tox-py36 https://zuul.opendev.org/t/openstack/build/46e1af5dbc0c413bae7b1bf005882f49 : FAILURE in 5m 07s - openstack-tox-py37 https://zuul.opendev.org/t/openstack/build/f215a1f0326c41e28f641ac860233688 : FAILURE in 4m 56s