[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/131c994a4a1443808f21147f546475... - openstack-tox-docs https://zuul.opendev.org/t/openstack/build/c640badc509840ae8b1a3609baf3d698 : SUCCESS in 3m 48s - openstack-tox-py27 https://zuul.opendev.org/t/openstack/build/e2ca52ee91484119bb5f5ba295e4f9c2 : FAILURE in 1m 38s - openstack-tox-py36 https://zuul.opendev.org/t/openstack/build/2912a4a670034736b0e1d69d52a47501 : SUCCESS in 2m 53s - openstack-tox-py37 https://zuul.opendev.org/t/openstack/build/01b3060e9fda4236b6f732b5e332e786 : SUCCESS in 3m 50s