Build failed. https://zuul.opendev.org/t/openstack/buildset/824f7e973a88417aab6ed00b510614a3 - openstack-tox-docs https://zuul.opendev.org/t/openstack/build/21cf30ef852d4ae99167b21fefa1d2e0 : SUCCESS in 4m 17s - openstack-tox-py27 https://zuul.opendev.org/t/openstack/build/15221398dba74ed6818fd0f403bb123c : RETRY_LIMIT in 2s - openstack-tox-py36 https://zuul.opendev.org/t/openstack/build/20caca660b85458cb49cc09563b5fbf0 : RETRY_LIMIT in 3s - openstack-tox-py37 https://zuul.opendev.org/t/openstack/build/28b60a147ace4f70bebf7a537075d6ff : RETRY_LIMIT in 3s