Build failed. https://zuul.opendev.org/t/openstack/buildset/2959676c2e124a01a4a2f5ef47e5d0a8 - openstack-tox-docs https://zuul.opendev.org/t/openstack/build/c6929ab9a4fe4fb09fba2edb3b08463a : SUCCESS in 4m 01s - openstack-tox-py27 https://zuul.opendev.org/t/openstack/build/d241cb45582b4ac2a9050d47d8e90389 : SUCCESS in 5m 12s - openstack-tox-py36 https://zuul.opendev.org/t/openstack/build/c1311c4c30804858b1d1172f9399135c : SUCCESS in 5m 05s - openstack-tox-py37 https://zuul.opendev.org/t/openstack/build/a6dee8a4405649c4b292058d1d54243f : FAILURE in 4m 05s