Build failed. https://zuul.opendev.org/t/openstack/buildset/782c825dac7b4c1f991115dc66f7a39f - openstack-tox-docs https://zuul.opendev.org/t/openstack/build/0c4498695b1b4b8387b688512b07c266 : SUCCESS in 3m 20s - openstack-tox-py27 https://zuul.opendev.org/t/openstack/build/5feb12b0dcd94f619f3e4dcf25af38d3 : SUCCESS in 3m 21s - openstack-tox-py36 https://zuul.opendev.org/t/openstack/build/493a90e2ca304e61b5c3619a753f05c2 : FAILURE in 3m 21s - openstack-tox-py37 https://zuul.opendev.org/t/openstack/build/a764b9b60a8746709a94799695199714 : FAILURE in 3m 06s