Build failed. https://zuul.opendev.org/t/openstack/buildset/401ef0db8ad64580a4c9ba516c31d5c1 - openstack-tox-docs https://zuul.opendev.org/t/openstack/build/79396cbf9292449fb1aa522a626f083b : SUCCESS in 4m 07s - openstack-tox-py27 https://zuul.opendev.org/t/openstack/build/5b267726250843569133e9ae7c57ceda : SUCCESS in 5m 39s - openstack-tox-py36 https://zuul.opendev.org/t/openstack/build/326a0c1800b0478086c04e8267f3ddf0 : SUCCESS in 7m 45s - openstack-tox-py37 https://zuul.opendev.org/t/openstack/build/87914e7093bc45b1be6a5ea050513210 : FAILURE in 4m 32s