Build failed. https://zuul.opendev.org/t/openstack/buildset/4dc9911297dd48728c5d400831d3e747 - openstack-tox-docs https://zuul.opendev.org/t/openstack/build/b18139eb029a4b829e1e931c14be6721 : SUCCESS in 3m 24s - openstack-tox-py27 https://zuul.opendev.org/t/openstack/build/79959989156e453bb4986382380f913f : SUCCESS in 4m 01s - openstack-tox-py36 https://zuul.opendev.org/t/openstack/build/b5a641e7769e4b7c9dce9c905d8c9915 : SUCCESS in 2m 57s - openstack-tox-py37 https://zuul.opendev.org/t/openstack/build/b758c20b60c24a29a5c74b939e80cb99 : FAILURE in 3m 34s