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

Build failed. https://zuul.opendev.org/t/openstack/buildset/9aa1e89cc0294d97a7bd5a9e89d010...

- openstack-tox-docs https://zuul.opendev.org/t/openstack/build/51d725d2dc594405b2131e204db8e126 : SUCCESS in 3m 01s - openstack-tox-py27 https://zuul.opendev.org/t/openstack/build/0f7609001ce64483b7f1a22e18662187 : SUCCESS in 2m 47s - openstack-tox-py36 https://zuul.opendev.org/t/openstack/build/39d21b60e5d64e9cbf1db79dbed284e1 : SUCCESS in 2m 45s - openstack-tox-py37 https://zuul.opendev.org/t/openstack/build/654ea6ac07d34c2d8cfb6f7d148cf948 : FAILURE in 2m 40s