{"ast_node_type":"function","tokens":[{"end":80,"kind":"keyword","start":0,"text":"let"}]}
        let source = "/// doc comment\r\n/// line 2\r\nfn foo() {}".to_string();
        let name_2 = FileName::Custom("crlf_source_2".to_string());
        let item = parse_item_from_source_str(name_2, source, &psess).unwrap().unwrap();