Build failed. https://zuul.opendev.org/t/openstack/buildset/dd1e22aab23d4f06b229fb568d584796 - openstack-tox-docs https://zuul.opendev.org/t/openstack/build/6d743c8eff914a1f8a2af765a6b127c2 : SUCCESS in 3m 33s - openstack-tox-py27 https://zuul.opendev.org/t/openstack/build/5d961c0be45445c385990ccc0179acd3 : SUCCESS in 5m 03s - openstack-tox-py36 https://zuul.opendev.org/t/openstack/build/8bf12aab04ad4087939401b8726cb6ed : SUCCESS in 4m 39s - openstack-tox-py37 https://zuul.opendev.org/t/openstack/build/8065ca33977e4ae4adc96756ceb1165f : FAILURE in 3m 52s