[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/906d2d7016b34a378240e961dfc7a5... - openstack-tox-docs https://zuul.opendev.org/t/openstack/build/32e76e68b93946b5ac6a89455a5f77e4 : SUCCESS in 4m 03s - openstack-tox-py27 https://zuul.opendev.org/t/openstack/build/95bbd36bd177478e9006cb113426fa27 : SUCCESS in 4m 57s - openstack-tox-py36 https://zuul.opendev.org/t/openstack/build/cc53e6a7cf80401e9aa8622f1fb68d54 : FAILURE in 3m 32s - openstack-tox-py37 https://zuul.opendev.org/t/openstack/build/aaf964c716d94489be7d64893a552d06 : FAILURE in 3m 13s