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

Build failed. https://zuul.opendev.org/t/openstack/buildset/621638451b4b4e028e3d7277e8d383... - openstack-tox-docs https://zuul.opendev.org/t/openstack/build/9a3ad068daa5437f89866c7757c28ec4 : SUCCESS in 5m 14s - openstack-tox-py27 https://zuul.opendev.org/t/openstack/build/22957ded26fe426680c32e93ca1ffde5 : SUCCESS in 5m 26s - openstack-tox-py36 https://zuul.opendev.org/t/openstack/build/7ab97ffbaadc48e8bdd4ed7a79ba3a60 : SUCCESS in 3m 50s - openstack-tox-py37 https://zuul.opendev.org/t/openstack/build/129194c9d17e4229aa1515ac7584536b : FAILURE in 4m 58s