Build failed. https://zuul.opendev.org/t/openstack/buildset/18e070ce4a5440a3a0d07aa2fa8f4f67 - openstack-tox-docs https://zuul.opendev.org/t/openstack/build/12080ac905ee4728a5ebac3cb6ec46e2 : SUCCESS in 3m 46s - openstack-tox-py27 https://zuul.opendev.org/t/openstack/build/6f0860420d8e4af69471a9cbe1bdad3f : SUCCESS in 4m 53s - openstack-tox-py36 https://zuul.opendev.org/t/openstack/build/7620355d96794a91bbb896c2f28c2e19 : SUCCESS in 5m 01s - openstack-tox-py37 https://zuul.opendev.org/t/openstack/build/7712431b633d49bfbaa931efa510b48a : FAILURE in 3m 46s