[Openstack-stable-maint] Stable check of openstack/oslo.utils for ref refs/heads/stable/train failed

Build failed. https://zuul.opendev.org/t/openstack/buildset/45acec75763845cfa47d3020c0a857... - openstack-tox-docs https://zuul.opendev.org/t/openstack/build/e84424d7dda94ffda863412304d7fb12 : SUCCESS in 4m 05s - openstack-tox-py27 https://zuul.opendev.org/t/openstack/build/2e2eeb89b3f744d3bb68a20ad16fb84f : SUCCESS in 4m 40s - openstack-tox-py36 https://zuul.opendev.org/t/openstack/build/faa9d1323a514dfcaaecf1d247738566 : SUCCESS in 4m 44s - openstack-tox-py37 https://zuul.opendev.org/t/openstack/build/084689cc2613445593eeeebf153977b1 : FAILURE in 4m 25s