Build failed. https://zuul.opendev.org/t/openstack/buildset/ac06b4663f7642a8b18083aba9893d10 - openstack-tox-docs https://zuul.opendev.org/t/openstack/build/e414ab9e319947cd8ea8bac389bd6cff : SUCCESS in 4m 37s - openstack-tox-py27 https://zuul.opendev.org/t/openstack/build/576fd92ad1f845c88a6e323e35d85885 : SUCCESS in 6m 13s - openstack-tox-py36 https://zuul.opendev.org/t/openstack/build/7bd9cb92a896427ab66c823d058b2192 : SUCCESS in 5m 29s - openstack-tox-py37 https://zuul.opendev.org/t/openstack/build/c493cfe7a43f4734b5ee8eac99a90a9a : FAILURE in 3m 56s