[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/e7407ad5e2f94cadbc58b7f8ba4604... - openstack-tox-docs https://zuul.opendev.org/t/openstack/build/48f3690eb8654628ae2095b834e68bc6 : SUCCESS in 3m 23s - openstack-tox-py27 https://zuul.opendev.org/t/openstack/build/db76daa0e2474658acb47da5491a063c : FAILURE in 4m 02s - openstack-tox-py36 https://zuul.opendev.org/t/openstack/build/ee4cdbddc6f747aab937c8bc0456e6d6 : SUCCESS in 3m 39s - openstack-tox-py37 https://zuul.opendev.org/t/openstack/build/e647938698d34342a6b35518dc8abb95 : SUCCESS in 4m 25s