[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/dd2c7d0c81f44d3ea89d8c16bda0a7... - openstack-tox-docs https://zuul.opendev.org/t/openstack/build/48c8f4f702524985a6a16fa33dc0dc97 : SUCCESS in 4m 32s - openstack-tox-py27 https://zuul.opendev.org/t/openstack/build/ea3c5f7f70ed4450aebb7b9d23d69964 : FAILURE in 3m 42s - openstack-tox-py36 https://zuul.opendev.org/t/openstack/build/f38c89b433c64fe3a795450046551d51 : SUCCESS in 5m 03s - openstack-tox-py37 https://zuul.opendev.org/t/openstack/build/3776a589c0ba498b846de0dcdcff57d8 : SUCCESS in 4m 00s