Build failed. https://zuul.opendev.org/t/openstack/buildset/686ded15389d4aaab2fe709d8c2f8d47 - openstack-tox-docs https://zuul.opendev.org/t/openstack/build/b833f13699ac4b17a28256cea7127318 : SUCCESS in 5m 07s - openstack-tox-py27 https://zuul.opendev.org/t/openstack/build/9b903328fc424f0ea93c83e37ad45b9b : SUCCESS in 4m 26s - openstack-tox-py36 https://zuul.opendev.org/t/openstack/build/b4c7c730238a48a2bfd059b938e31157 : SUCCESS in 4m 01s - openstack-tox-py37 https://zuul.opendev.org/t/openstack/build/1b05eca0bbbd4507af0ba1d66bd38177 : FAILURE in 4m 44s