Build failed. https://zuul.opendev.org/t/openstack/buildset/fe504333bfb04ed09649fd76eb602695 - openstack-tox-docs https://zuul.opendev.org/t/openstack/build/32e7b04b6acf42e985fb9831a6405edd : SUCCESS in 3m 13s - openstack-tox-py27 https://zuul.opendev.org/t/openstack/build/d5add87c1e234ddfb72433b1a9ed35a2 : SUCCESS in 3m 32s - openstack-tox-py36 https://zuul.opendev.org/t/openstack/build/05eb6cad186f4233956e950c687682a6 : FAILURE in 3m 06s - openstack-tox-py37 https://zuul.opendev.org/t/openstack/build/4a317d1f88474f35883348a9391b5500 : FAILURE in 2m 58s