[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/0331fe93ba2b4184aebc56476ce56e... - openstack-tox-docs https://zuul.opendev.org/t/openstack/build/853580375ff844359b7d22d7a471b90a : SUCCESS in 3m 57s - openstack-tox-py27 https://zuul.opendev.org/t/openstack/build/545832b4575543458b37e46c4f1468df : FAILURE in 3m 17s - openstack-tox-py36 https://zuul.opendev.org/t/openstack/build/5b9595cd99664504be0d1d0e177b26c5 : SUCCESS in 3m 31s - openstack-tox-py37 https://zuul.opendev.org/t/openstack/build/2c61fc53d63f449185f48e86138f5893 : SUCCESS in 3m 31s