{"ast_node_type":"variable","tokens":[{"end":62,"kind":"keyword","start":0,"text":"let"}]}
                let (sans_suffix, _) = repr_str.split_at(pos);
            if let Some(pos) = repr_str.chars().position(|c| c == 'i' || c == 'u') {
                OverflowingBinHexSub::Suggestion { span, suggestion_ty, sans_suffix }