{"ast_node_type":"other","tokens":[{"end":96,"kind":"keyword","start":0,"text":"CanonicalizeMode::Input(_)"}]}
                CanonicalizeMode::Input(_) => CanonicalVarKind::Region(ty::UniverseIndex::ROOT),
            ty::ReErased | ty::ReError(_) => match self.canonicalize_mode {
                CanonicalizeMode::Response { .. } => return r,