Build failed. https://zuul.opendev.org/t/openstack/buildset/effa79aa462e4f9cb3e5cc2ef88eab2a - openstack-tox-docs https://zuul.opendev.org/t/openstack/build/4b7db557798e41caae65f3779ccd3038 : SUCCESS in 3m 39s - openstack-tox-py27 https://zuul.opendev.org/t/openstack/build/1ccb1658c63249a3b4164d4951d89950 : SUCCESS in 4m 15s - openstack-tox-py36 https://zuul.opendev.org/t/openstack/build/f32cb9e05d7443558d283a5c37b0068a : FAILURE in 3m 11s - openstack-tox-py37 https://zuul.opendev.org/t/openstack/build/30d1d842f76a480d8a9be004177f2406 : FAILURE in 2m 57s