Build failed. https://zuul.opendev.org/t/openstack/buildset/81eaa9a96da74adc9d1ded67a8dc77dd - openstack-tox-docs https://zuul.opendev.org/t/openstack/build/b3fe038d84cd4142b0d65bb2b90d66f5 : SUCCESS in 3m 48s - openstack-tox-py27 https://zuul.opendev.org/t/openstack/build/4790a4262af64e148140771ff377c4bd : FAILURE in 3m 28s - openstack-tox-py36 https://zuul.opendev.org/t/openstack/build/bc7893850d344bcbac9d88383854f8a4 : SUCCESS in 3m 04s - openstack-tox-py37 https://zuul.opendev.org/t/openstack/build/9aa038b9e8f74626828d3b65249d61ed : FAILURE in 3m 01s