[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/8e46b8c238ea4f19aa5bb3d4a4b854... - openstack-tox-docs https://zuul.opendev.org/t/openstack/build/d255394383e44ae483981d018e15a7f0 : SUCCESS in 4m 35s - openstack-tox-py27 https://zuul.opendev.org/t/openstack/build/bed6412acad74f0c9637032da7900b38 : FAILURE in 4m 35s - openstack-tox-py36 https://zuul.opendev.org/t/openstack/build/34adbaa2c0ee4409ab164645f447f659 : SUCCESS in 4m 30s - openstack-tox-py37 https://zuul.opendev.org/t/openstack/build/562ebc34c9d24723a78dcadc13614079 : SUCCESS in 4m 10s