[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/2f71057d583a4d909af15a12e7f726... - openstack-tox-docs https://zuul.opendev.org/t/openstack/build/5bc6c277d747427594805ef998b120b9 : SUCCESS in 4m 35s - openstack-tox-py27 https://zuul.opendev.org/t/openstack/build/bd95473c4cde494580545e6dded4b76e : FAILURE in 3m 34s - openstack-tox-py36 https://zuul.opendev.org/t/openstack/build/8ddd241b79eb4a38ace550028cb8c6bf : SUCCESS in 3m 37s - openstack-tox-py37 https://zuul.opendev.org/t/openstack/build/abca61951fa24d9bba38b1f9a623f2b3 : SUCCESS in 3m 40s