[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/4b410d1599034f2cb6df3c145b74c3... - openstack-tox-docs https://zuul.opendev.org/t/openstack/build/5a1f9c5a87524922bb3a832cb8c1bfb8 : SUCCESS in 3m 33s - openstack-tox-py27 https://zuul.opendev.org/t/openstack/build/9c4670e7b225495db3bfe3295100c44b : SUCCESS in 3m 47s - openstack-tox-py36 https://zuul.opendev.org/t/openstack/build/dc88b6d8b9bb4d939cf1e50434f31528 : SUCCESS in 2m 38s - openstack-tox-py37 https://zuul.opendev.org/t/openstack/build/8c5bc294a1964cc08bb6a80f4f3a08c6 : FAILURE in 3m 04s