[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/f9adbc59e0944b539a9a4f4709cb15... - openstack-tox-docs https://zuul.opendev.org/t/openstack/build/defdaf66745848c3bcc6c28367a4bc1a : SUCCESS in 4m 45s - openstack-tox-py27 https://zuul.opendev.org/t/openstack/build/f4b8139dacfd4bd58c4806855b9bd298 : SUCCESS in 5m 01s - openstack-tox-py36 https://zuul.opendev.org/t/openstack/build/4f3661d8818a4ba4a56d93beae3c1bd5 : SUCCESS in 5m 00s - openstack-tox-py37 https://zuul.opendev.org/t/openstack/build/c6ff0a7a558b43c1947ae270707411e6 : FAILURE in 4m 27s