Build failed. https://zuul.opendev.org/t/openstack/buildset/02e0e0235c9c4bc09246d6dd1c5346ee - openstack-tox-docs https://zuul.opendev.org/t/openstack/build/6a8bdfaf6ee64544b567a5f99fbae47b : SUCCESS in 3m 30s - openstack-tox-py27 https://zuul.opendev.org/t/openstack/build/6684e694f30042df8132878b3acfcfc4 : FAILURE in 2m 58s - openstack-tox-py36 https://zuul.opendev.org/t/openstack/build/5c73cc883ecf422b9cdec49a58cf4437 : SUCCESS in 2m 48s - openstack-tox-py37 https://zuul.opendev.org/t/openstack/build/f452191a891149798a84ed9f3d610d09 : FAILURE in 2m 53s