Build failed. https://zuul.opendev.org/t/openstack/buildset/064a909140184f299f9af4c4bfede3fc - openstack-tox-docs https://zuul.opendev.org/t/openstack/build/44a93a9f008543a480aec4bb08a1c4ae : SUCCESS in 4m 10s - openstack-tox-py27 https://zuul.opendev.org/t/openstack/build/d71f5a5f93e34c4985aedce43ba38ce1 : SUCCESS in 5m 04s - openstack-tox-py36 https://zuul.opendev.org/t/openstack/build/97be7c14a3fc4854a427be1c9a887043 : SUCCESS in 4m 40s - openstack-tox-py37 https://zuul.opendev.org/t/openstack/build/9113b44a16b340de8143eb16a052ad06 : FAILURE in 4m 49s