Build failed. https://zuul.opendev.org/t/openstack/buildset/179ea44deed245388e60ff46afc8803d - openstack-tox-docs https://zuul.opendev.org/t/openstack/build/2c52a73f9dd64a1da8dfb10fe4972c3a : SUCCESS in 3m 42s - openstack-tox-py27 https://zuul.opendev.org/t/openstack/build/d734a23a7c944d4786530a8692ce504a : SUCCESS in 4m 31s - openstack-tox-py36 https://zuul.opendev.org/t/openstack/build/0d7e8f694380428fb7b4e8892c89e5ca : SUCCESS in 4m 02s - openstack-tox-py37 https://zuul.opendev.org/t/openstack/build/597634a10a9c4a738f35d051e990cfcf : FAILURE in 2m 43s