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

Build failed. - openstack-tox-docs https://zuul.opendev.org/t/openstack/build/1917e9b65143455d8daa8478f557abd8 : SUCCESS in 8m 57s - openstack-tox-py27 https://zuul.opendev.org/t/openstack/build/5bc84e732ccf42a4968b1a4083630eef : FAILURE in 13m 28s - openstack-tox-py36 https://zuul.opendev.org/t/openstack/build/54acfdfc140d4be48b0218e4826b87eb : SUCCESS in 11m 22s - openstack-tox-py37 https://zuul.opendev.org/t/openstack/build/7e9f0b17adec4f3c8c8ac73573b5ad4e : SUCCESS in 11m 56s