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

Build failed. https://zuul.opendev.org/t/openstack/buildset/47bca0a296d84ecd9a90444c99c184... - openstack-tox-docs https://zuul.opendev.org/t/openstack/build/aca23256a501436da0a66bf2349f9520 : SUCCESS in 4m 33s - openstack-tox-py27 https://zuul.opendev.org/t/openstack/build/e25bddd907b9457ab12134e01be3cd5f : SUCCESS in 4m 51s - openstack-tox-py36 https://zuul.opendev.org/t/openstack/build/92ebab011e064419801425679bd815c9 : SUCCESS in 5m 59s - openstack-tox-py37 https://zuul.opendev.org/t/openstack/build/d4cb10e9626b493fa2d23e935c5d1fb3 : FAILURE in 4m 17s