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

Build failed. - openstack-tox-docs https://zuul.opendev.org/t/openstack/build/0995c12c8d1b4abd9cb4a26abd374f0f : SUCCESS in 9m 26s - openstack-tox-py27 https://zuul.opendev.org/t/openstack/build/bbae1518d0874574bff1fee2fe014ec5 : FAILURE in 8m 29s - openstack-tox-py36 https://zuul.opendev.org/t/openstack/build/4db6665ee45446eb900b11d2989f4bbf : SUCCESS in 8m 16s - openstack-tox-py37 https://zuul.opendev.org/t/openstack/build/ca83e5a97b234249b9133392ec3d800e : SUCCESS in 8m 29s