[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/5d3a4813f2114acdac1c237395e7bd... - openstack-tox-docs https://zuul.opendev.org/t/openstack/build/a82f718d06734e39b57f1cffd431addb : SUCCESS in 4m 39s - openstack-tox-py27 https://zuul.opendev.org/t/openstack/build/574cfc4849854ee196790fb31fdd9b90 : SUCCESS in 5m 13s - openstack-tox-py36 https://zuul.opendev.org/t/openstack/build/72f636cdff424357ab70d089d6444f59 : SUCCESS in 4m 54s - openstack-tox-py37 https://zuul.opendev.org/t/openstack/build/ef37413e76d24f41869c52c5e9516321 : FAILURE in 4m 03s