Build failed. https://zuul.opendev.org/t/openstack/buildset/7afdb40ec330470b850fe8c12a47318a - openstack-tox-docs https://zuul.opendev.org/t/openstack/build/951046687c314d5cad19b99e9137bd43 : FAILURE in 4m 18s - openstack-tox-py27 https://zuul.opendev.org/t/openstack/build/a7c9a919c8924693b0054b5ad1ed3f5e : SUCCESS in 3m 49s - openstack-tox-py36 https://zuul.opendev.org/t/openstack/build/3bce4203234e4bf59dd93e37ce2e8ef6 : SUCCESS in 5m 03s - openstack-tox-py37 https://zuul.opendev.org/t/openstack/build/0f906fe50a264b46897f28c34e605861 : SUCCESS in 3m 32s