Build failed. https://zuul.opendev.org/t/openstack/buildset/9c125c68159341f6b103a15c890b47ea - openstack-tox-docs https://zuul.opendev.org/t/openstack/build/21aecfe7afb5491d954b078067c273d8 : SUCCESS in 2m 52s - openstack-tox-py27 https://zuul.opendev.org/t/openstack/build/2d3efe522cd54b35b5437395e7ff5d79 : SUCCESS in 3m 18s - openstack-tox-py36 https://zuul.opendev.org/t/openstack/build/499cd5f4183a4a92985eda8546d54302 : SUCCESS in 2m 38s - openstack-tox-py37 https://zuul.opendev.org/t/openstack/build/e7eb3da27ea44420a74d429a0ee9b6bf : FAILURE in 2m 54s