Build failed. https://zuul.opendev.org/t/openstack/buildset/49a1de7d236443ef825a4cf1bbfa6ad1 - openstack-tox-docs https://zuul.opendev.org/t/openstack/build/54efb757a5e64541a3b02a5649528e39 : SUCCESS in 4m 28s - openstack-tox-py27 https://zuul.opendev.org/t/openstack/build/d50defc3c582487f9e73d8522b9aee35 : RETRY_LIMIT in 2m 16s - openstack-tox-py36 https://zuul.opendev.org/t/openstack/build/b2bdb762db9f484985d03d1469ca755a : RETRY_LIMIT in 2m 17s - openstack-tox-py37 https://zuul.opendev.org/t/openstack/build/c2de39f78d474d84a61a3ed3b02a535c : RETRY_LIMIT in 2m 53s