{"ast_node_type":"other","tokens":[{"end":80,"kind":"keyword","start":0,"text":"return"}]}
            return Err(ConstEvalErrKind::Panic { msg, file, line, col }).into();
            let (file, line, col) = self.location_triple_for_span(span);
        } else if self.tcx.is_lang_item(def_id, LangItem::PanicFmt) {