[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/524494650ce54f8aa7562e1e2bd011... - openstack-tox-docs https://zuul.opendev.org/t/openstack/build/4c6708ddf34f4c81891e5f71fd1e9c15 : SUCCESS in 3m 50s - openstack-tox-py27 https://zuul.opendev.org/t/openstack/build/8019d0a6710f43bd94de6f457fc7c06e : FAILURE in 2m 38s - openstack-tox-py36 https://zuul.opendev.org/t/openstack/build/33f26d25bce8475383c5e41547736ee2 : SUCCESS in 4m 21s - openstack-tox-py37 https://zuul.opendev.org/t/openstack/build/30fbae2dacf24708a900051ed779d62b : SUCCESS in 4m 41s