Build failed. https://zuul.opendev.org/t/openstack/buildset/90d850745aa84a8b8788ca13d1fed5fd - openstack-tox-docs https://zuul.opendev.org/t/openstack/build/34814e40d2fb4f679f8ef563cdbb43fa : SUCCESS in 3m 26s - openstack-tox-py27 https://zuul.opendev.org/t/openstack/build/eecfbc351a1d48b2b582e988d92c05f8 : SUCCESS in 3m 17s - openstack-tox-py36 https://zuul.opendev.org/t/openstack/build/c52646e5e48948aba3faa50cf6ae7337 : SUCCESS in 2m 57s - openstack-tox-py37 https://zuul.opendev.org/t/openstack/build/cca82c7fb5e448a7ba1e354dce5291bd : FAILURE in 3m 53s