Build failed. https://zuul.opendev.org/t/openstack/buildset/faf466ba146a43888c1082c94b2f6801 - openstack-tox-docs https://zuul.opendev.org/t/openstack/build/65da7111bd3b43919533170accff5648 : SUCCESS in 3m 37s - openstack-tox-py27 https://zuul.opendev.org/t/openstack/build/e4adfb0357a841be81133d3b4a7f9df2 : SUCCESS in 3m 08s - openstack-tox-py36 https://zuul.opendev.org/t/openstack/build/90fbd625891349098d9ab38e9c6a9b9a : FAILURE in 3m 08s - openstack-tox-py37 https://zuul.opendev.org/t/openstack/build/044f43a273604146aa510ea92e03e85c : FAILURE in 3m 44s