Build failed. https://zuul.opendev.org/t/openstack/buildset/cde3383fd692480288fb32fcd2d312e3 - openstack-tox-docs https://zuul.opendev.org/t/openstack/build/cec3f4abec2642b99ca14c3187ceff3d : SUCCESS in 7m 32s - openstack-tox-py27 https://zuul.opendev.org/t/openstack/build/474b10ce78a84d488896db3cbb019858 : SUCCESS in 5m 39s - openstack-tox-py36 https://zuul.opendev.org/t/openstack/build/91ae7ad8d86b4d96972ee518acb850f4 : SUCCESS in 5m 31s - openstack-tox-py37 https://zuul.opendev.org/t/openstack/build/5abcbd4093514e03b81fa1f40f1c7c94 : FAILURE in 7m 42s