{"ast_node_type":"function","tokens":[{"end":86,"kind":"keyword","start":0,"text":"fn"}]}
        fn has_error_or_infer<'tcx>(tys: impl IntoIterator<Item = Ty<'tcx>>) -> bool {
        // Don't print if it has error types or is just plain `_`
            tys.into_iter().any(|ty| ty.references_error() || ty.is_ty_var())