Build failed. https://zuul.opendev.org/t/openstack/buildset/feb42d1156744b3a977382b674d2f09e - openstack-tox-docs https://zuul.opendev.org/t/openstack/build/976a484e0c06472cb0061f62636dc6be : SUCCESS in 4m 25s - openstack-tox-py27 https://zuul.opendev.org/t/openstack/build/18ee8104a2344b7ea7476afd9cf49454 : SUCCESS in 4m 16s - openstack-tox-py36 https://zuul.opendev.org/t/openstack/build/c46793ff74864f17807e20d759f7a476 : FAILURE in 4m 49s - openstack-tox-py37 https://zuul.opendev.org/t/openstack/build/ffa74177a4f1469cbf46eea9aa24f0a1 : FAILURE in 5m 18s