Build failed. https://zuul.opendev.org/t/openstack/buildset/4f546b9a36a0498493d80ee6d5f9834b - openstack-tox-docs https://zuul.opendev.org/t/openstack/build/f32cdb5a2b0e49c2a3174c49fef8e0b2 : SUCCESS in 4m 32s - openstack-tox-py27 https://zuul.opendev.org/t/openstack/build/de3828ceb214464e985b155c89ef963e : SUCCESS in 4m 43s - openstack-tox-py36 https://zuul.opendev.org/t/openstack/build/d590f36c1ca7403085dbb2708b04e746 : FAILURE in 4m 18s - openstack-tox-py37 https://zuul.opendev.org/t/openstack/build/1bb358023bbd444f87f6ec086cfb1473 : FAILURE in 5m 06s