Build failed. https://zuul.opendev.org/t/openstack/buildset/694e0f693d684bd9912fef440f2ed056 - openstack-tox-docs https://zuul.opendev.org/t/openstack/build/4364886e40134c99b47e33f6db1822f0 : FAILURE in 3m 57s - openstack-tox-py27 https://zuul.opendev.org/t/openstack/build/e66244c2878548dcb31fe09ccf31eedf : FAILURE in 4m 30s - openstack-tox-py36 https://zuul.opendev.org/t/openstack/build/8c1429dc6ca543b8ac923597a01809f8 : FAILURE in 4m 30s - openstack-tox-py37 https://zuul.opendev.org/t/openstack/build/a789777aef4a4ad2983c2c801fa8b497 : FAILURE in 5m 47s