{"ast_node_type":"other","tokens":[{"end":93,"kind":"keyword","start":0,"text":"!self.probe_ty_var(vid).is_err_and(|_|"}]}
                            !self.probe_ty_var(vid).is_err_and(|_| self.root_var(vid) == vid)
                        ty::InferTy::TyVar(vid) => {
                        }