[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/4f7ad1fa94eb4419af6a549809edee... - openstack-tox-docs https://zuul.opendev.org/t/openstack/build/8e11511ac0d34fd385ffe7809897de54 : SUCCESS in 3m 32s - openstack-tox-py27 https://zuul.opendev.org/t/openstack/build/a573aada282b4a7f82fda4d70f0789a6 : FAILURE in 3m 46s - openstack-tox-py36 https://zuul.opendev.org/t/openstack/build/6a7a4063b1854e8ab1cc8e280a226c28 : SUCCESS in 3m 06s - openstack-tox-py37 https://zuul.opendev.org/t/openstack/build/022341c73134488e8d23d88109d565c5 : SUCCESS in 4m 21s