[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/8e4eacfbae684a0fb765fdcf8ea1b2... - openstack-tox-docs https://zuul.opendev.org/t/openstack/build/660b9f2aab0b4c649c3c8ca7808f58db : SUCCESS in 4m 29s - openstack-tox-py27 https://zuul.opendev.org/t/openstack/build/ad352e5d72a54b7cbce9dcd2654c360e : FAILURE in 4m 09s - openstack-tox-py36 https://zuul.opendev.org/t/openstack/build/fc9be37361da48cd8c14e5703611ed13 : SUCCESS in 3m 37s - openstack-tox-py37 https://zuul.opendev.org/t/openstack/build/e26cc89c49f14e319d1816d5e0ef9f4f : SUCCESS in 3m 39s