[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/8dff80af14824a60b326075de9f602... - openstack-tox-docs https://zuul.opendev.org/t/openstack/build/eca68d0c45eb442ca8ed6a3fc7dbac50 : SUCCESS in 4m 33s - openstack-tox-py27 https://zuul.opendev.org/t/openstack/build/07c088316f6b474584ccffc72536301d : SUCCESS in 4m 59s - openstack-tox-py36 https://zuul.opendev.org/t/openstack/build/13aee0b3012a40ad8418d9cdbda8781c : RETRY_LIMIT in 1m 40s - openstack-tox-py37 https://zuul.opendev.org/t/openstack/build/8675ec665ae145d5b4467fb5a3ce348d : SUCCESS in 4m 03s