Build failed. - openstack-tox-docs https://zuul.opendev.org/t/openstack/build/eb2400b0f6f2444f9637448f251a6648 : SUCCESS in 3m 38s - openstack-tox-py27 https://zuul.opendev.org/t/openstack/build/193f5b49909b4f888486fd7b424933da : FAILURE in 3m 32s - openstack-tox-py36 https://zuul.opendev.org/t/openstack/build/6936fc84df334c3fa0917b7b8f6a89f4 : SUCCESS in 6m 19s - openstack-tox-py37 https://zuul.opendev.org/t/openstack/build/5479ca8d462940b7a683c7587ce91da0 : SUCCESS in 4m 42s