Build failed. https://zuul.opendev.org/t/openstack/buildset/abe26e262b824171af9fde4861a27b1b - openstack-tox-docs https://zuul.opendev.org/t/openstack/build/a7554a8d95c845c49f6d9aa6511e2e8e : SUCCESS in 2m 49s - openstack-tox-py27 https://zuul.opendev.org/t/openstack/build/c9274b648fb04b528dd9741ebd4ed90d : SUCCESS in 3m 32s - openstack-tox-py36 https://zuul.opendev.org/t/openstack/build/0604d9eff16d4efcb7005f60dd1c1ca1 : SUCCESS in 2m 58s - openstack-tox-py37 https://zuul.opendev.org/t/openstack/build/a3029d28763244bd82e8e6f664bed946 : FAILURE in 2m 39s