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

Build failed. https://zuul.opendev.org/t/openstack/buildset/71c85bb933204679b246b0be778611... - openstack-tox-docs https://zuul.opendev.org/t/openstack/build/405d5cb2ce60420eb0d89359aae17478 : SUCCESS in 3m 44s - openstack-tox-py27 https://zuul.opendev.org/t/openstack/build/f8f797de11184a19a749b88f1dcc5526 : SUCCESS in 5m 54s - openstack-tox-py36 https://zuul.opendev.org/t/openstack/build/a100562704764f7dac4083379e4f90e7 : SUCCESS in 4m 27s - openstack-tox-py37 https://zuul.opendev.org/t/openstack/build/4f74968524324a4d9309884dbee2bbdd : FAILURE in 3m 43s