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

Build failed. https://zuul.opendev.org/t/openstack/buildset/ea7a00d242f64366aa4b8ea7bdef36... - openstack-tox-docs https://zuul.opendev.org/t/openstack/build/10e24fea4b464fab874fe1c11dcd7c13 : SUCCESS in 4m 20s - openstack-tox-py27 https://zuul.opendev.org/t/openstack/build/d1c2a88f27af4afda24286cb503217a5 : FAILURE in 4m 02s - openstack-tox-py36 https://zuul.opendev.org/t/openstack/build/fe3ea3fbcb8d42019163ce972be055bc : SUCCESS in 3m 28s - openstack-tox-py37 https://zuul.opendev.org/t/openstack/build/ba23b2d1b0dd4fa8bb32eca7245e05f1 : FAILURE in 2m 51s