[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/fda938e17cad43b6a9eca3bae2f52e... - openstack-tox-docs https://zuul.opendev.org/t/openstack/build/dcf1c0200bcb4e58bdd4a2c6e31bf5fb : SUCCESS in 4m 47s - openstack-tox-py27 https://zuul.opendev.org/t/openstack/build/7d13c622c3a84fdbb6765c2137c7d097 : SUCCESS in 5m 45s - openstack-tox-py36 https://zuul.opendev.org/t/openstack/build/ba63b310372f4001b04c58162cae3231 : SUCCESS in 5m 21s - openstack-tox-py37 https://zuul.opendev.org/t/openstack/build/208c77d7d558498c8cf62f6d8464d2bf : FAILURE in 4m 05s