Build failed. https://zuul.opendev.org/t/openstack/buildset/3698627185d9467abb20f388257e010a - openstack-tox-docs https://zuul.opendev.org/t/openstack/build/db3d5dd6ac144f50a750f4984a01db8f : FAILURE in 6m 14s - openstack-tox-py27 https://zuul.opendev.org/t/openstack/build/b6c5cdf8d5564447bfb8031d403e4610 : SUCCESS in 4m 33s - openstack-tox-py36 https://zuul.opendev.org/t/openstack/build/d31e7a189d9248b2a0364dfffab21b3c : SUCCESS in 6m 19s - openstack-tox-py37 https://zuul.opendev.org/t/openstack/build/58a30a480ed94408804861108f983e9f : SUCCESS in 7m 03s