Build failed. https://zuul.opendev.org/t/openstack/buildset/8fcdbe39e78b484080980ed4ab9c8e9d - openstack-tox-docs https://zuul.opendev.org/t/openstack/build/77709f4840bb49d3b93e17ab0385553b : SUCCESS in 4m 17s - openstack-tox-py27 https://zuul.opendev.org/t/openstack/build/ab5a5596f2b8499f8fc7fe1584e974e4 : SUCCESS in 5m 22s - openstack-tox-py36 https://zuul.opendev.org/t/openstack/build/ec21c09267854e3d9e6f8e716488ee90 : SUCCESS in 5m 05s - openstack-tox-py37 https://zuul.opendev.org/t/openstack/build/7b217cd8c3094b0885af0bd10400c46f : FAILURE in 6m 13s