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

Build failed. - openstack-tox-docs https://zuul.opendev.org/t/openstack/build/94bd3ca31e64492a871ec620a36c924d : SUCCESS in 9m 25s - openstack-tox-py27 https://zuul.opendev.org/t/openstack/build/1fc5f81ca6384e10bccce56a4423816b : SUCCESS in 33m 06s - openstack-tox-py36 https://zuul.opendev.org/t/openstack/build/b553a0fd386a4ba9a74b8ed2fc80d4b1 : SUCCESS in 33m 45s - openstack-tox-py37 https://zuul.opendev.org/t/openstack/build/b48724b375b84d15ab5c7eda1e008fbb : TIMED_OUT in 40m 59s