Build failed. https://zuul.opendev.org/t/openstack/buildset/bf5af0f238874170a8e6ae87da405155 - openstack-tox-docs https://zuul.opendev.org/t/openstack/build/392010273d3d413bb0b18ad36b54516d : SUCCESS in 4m 52s - openstack-tox-py27 https://zuul.opendev.org/t/openstack/build/1cbb477d035b401ab793beb6789b958c : SUCCESS in 6m 53s - openstack-tox-py36 https://zuul.opendev.org/t/openstack/build/d326c6b7ad164b2eb395b02fcc1e8ca4 : SUCCESS in 6m 55s - openstack-tox-py37 https://zuul.opendev.org/t/openstack/build/3fd7ffac4a52464082cdc86ce138e9f7 : FAILURE in 6m 04s