Build failed. - openstack-tox-docs https://zuul.opendev.org/t/openstack/build/cf57ab45cc034b0795b6197eb1e74dbe : SUCCESS in 4m 49s - openstack-tox-py27 https://zuul.opendev.org/t/openstack/build/1675ab6a25cf42ef94390dcb5b662758 : FAILURE in 3m 36s - openstack-tox-py36 https://zuul.opendev.org/t/openstack/build/bec78ad2f91244b491ec5e763ed8407a : SUCCESS in 4m 40s - openstack-tox-py37 https://zuul.opendev.org/t/openstack/build/11a05e0bddb24fa7843897ccc8342cf5 : SUCCESS in 5m 40s