[Openstack-stable-maint] Stable check of openstack/oslo.log for ref refs/heads/stable/train failed

Build failed. https://zuul.opendev.org/t/openstack/buildset/b7cffc0620064351b9a506200c588d... - openstack-tox-docs https://zuul.opendev.org/t/openstack/build/80a6c9b4f12f417c8614c7e181a0917e : SUCCESS in 3m 04s - openstack-tox-py27 https://zuul.opendev.org/t/openstack/build/bd39423dedb44e6d8e95a78e575bfd73 : SUCCESS in 3m 20s - openstack-tox-py36 https://zuul.opendev.org/t/openstack/build/39e8e611d9ee46818278c2080cbee09c : FAILURE in 4m 00s - openstack-tox-py37 https://zuul.opendev.org/t/openstack/build/ca37ed15a6874d17b7cb345a61e69aa1 : FAILURE in 3m 27s