Build failed. https://zuul.opendev.org/t/openstack/buildset/bf259d3835f542e7a6753f162cf23b8f - openstack-tox-docs https://zuul.opendev.org/t/openstack/build/7fb3924f7b554a49987a9b190ed68cdc : SUCCESS in 3m 32s - openstack-tox-py27 https://zuul.opendev.org/t/openstack/build/29fbf4adf04b4d939e0bc78b4d44a8ce : SUCCESS in 4m 37s - openstack-tox-py36 https://zuul.opendev.org/t/openstack/build/40d21a9246a54ba39754ef4d111808bb : SUCCESS in 2m 49s - openstack-tox-py37 https://zuul.opendev.org/t/openstack/build/4b0e8571d36f42d3a5c883b19358445f : FAILURE in 2m 39s