Comment 20 for bug 1777157

sorry for confusion, the allow_migrate_to_same_host is set to True (this is why UnableToMigrateToSelf is raised at all).

apparently the traceback disappears from the context somewhere around this call

https://github.com/openstack/nova/blob/b5e8702f5737fff432cd0e4b461f80b368ac42ff/nova/compute/manager.py#L1341

I'll investigate further