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

Build failed. https://zuul.opendev.org/t/openstack/buildset/5f6e4abc04e647e3ad4b413b0d29cd... - openstack-tox-docs https://zuul.opendev.org/t/openstack/build/78ede44f40e14d7e8ed5b287d2c3d7b4 : SUCCESS in 4m 08s - openstack-tox-py27 https://zuul.opendev.org/t/openstack/build/0c667402251641e2914fc4f3c0bff40e : FAILURE in 2m 59s - openstack-tox-py36 https://zuul.opendev.org/t/openstack/build/bc34e5871f334358a4da5ef4b67bf518 : SUCCESS in 3m 25s - openstack-tox-py37 https://zuul.opendev.org/t/openstack/build/599b6c4d036149bb8026db1d7804b2e5 : SUCCESS in 3m 31s