[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/9c644b1072fe46599796f263429959... - openstack-tox-docs https://zuul.opendev.org/t/openstack/build/5dcd9bf6ab2441339486423ab72f96ba : SUCCESS in 3m 15s - openstack-tox-py27 https://zuul.opendev.org/t/openstack/build/5e6a47e03b574dccae74d12089533754 : SUCCESS in 4m 19s - openstack-tox-py36 https://zuul.opendev.org/t/openstack/build/8c794d586da14974af92df0114ba51ee : FAILURE in 3m 48s - openstack-tox-py37 https://zuul.opendev.org/t/openstack/build/f8168e5558cd4df896e28fcdc5a14797 : FAILURE in 3m 22s