Build failed. https://zuul.opendev.org/t/openstack/buildset/ef38ba25703d4f4fa36a6f3b6a4038fd - openstack-tox-docs https://zuul.opendev.org/t/openstack/build/3d8a01be1995469abab97ea486a5ca11 : SUCCESS in 4m 12s - openstack-tox-py27 https://zuul.opendev.org/t/openstack/build/a87c6243378b4af3bf1418b681701eb8 : FAILURE in 3m 10s - openstack-tox-py36 https://zuul.opendev.org/t/openstack/build/7f7f777d098b405b85936fab608b9776 : SUCCESS in 3m 29s - openstack-tox-py37 https://zuul.opendev.org/t/openstack/build/b490975fb71f412db7531abc400f8a56 : SUCCESS in 4m 08s