Build failed. https://zuul.opendev.org/t/openstack/buildset/940724dfe1bd4318971b3d5156aa03d6 - openstack-tox-docs https://zuul.opendev.org/t/openstack/build/227e5a02636b478d9fddfbb6a588fe1d : SUCCESS in 3m 26s - openstack-tox-py27 https://zuul.opendev.org/t/openstack/build/9ce481420cc5488491103048b2527df7 : SUCCESS in 2m 51s - openstack-tox-py36 https://zuul.opendev.org/t/openstack/build/24d520540fd147d38571242599135491 : SUCCESS in 2m 56s - openstack-tox-py37 https://zuul.opendev.org/t/openstack/build/82a63c24cfd34e4d89d136e15ff1e37d : FAILURE in 3m 25s