SOURCE_FILE
  FN
    COMMENT "// https://github.com/rust-lang/rust-analyzer/issues/677"
    WHITESPACE "\n"
    FN_KW "fn"
    WHITESPACE " "
    NAME
      IDENT "main"
    PARAM_LIST
      L_PAREN "("
      R_PAREN ")"
    WHITESPACE " "
    BLOCK_EXPR
      STMT_LIST
        L_CURLY "{"
        WHITESPACE "\n    "
        LET_STMT
          ATTR
            POUND "#"
            L_BRACK "["
            META
              PATH
                PATH_SEGMENT
                  NAME_REF
                    IDENT "cfg"
              TOKEN_TREE
                L_PAREN "("
                IDENT "feature"
                WHITESPACE " "
                EQ "="
                WHITESPACE " "
                STRING "\"backtrace\""
                R_PAREN ")"
            R_BRACK "]"
          WHITESPACE "\n    "
          LET_KW "let"
          WHITESPACE " "
          IDENT_PAT
            NAME
              IDENT "exit_code"
          WHITESPACE " "
          EQ "="
          WHITESPACE " "
          CALL_EXPR
            PATH_EXPR
              PATH
                PATH
                  PATH_SEGMENT
                    NAME_REF
                      IDENT "panic"
                COLON2 "::"
                PATH_SEGMENT
                  NAME_REF
                    IDENT "catch_unwind"
            ARG_LIST
              L_PAREN "("
              CLOSURE_EXPR
                MOVE_KW "move"
                WHITESPACE " "
                PARAM_LIST
                  PIPE "|"
                  PIPE "|"
                WHITESPACE " "
                CALL_EXPR
                  PATH_EXPR
                    PATH
                      PATH_SEGMENT
                        NAME_REF
                          IDENT "main"
                  ARG_LIST
                    L_PAREN "("
                    R_PAREN ")"
              R_PAREN ")"
          SEMICOLON ";"
        WHITESPACE "\n"
        R_CURLY "}"
  WHITESPACE "\n"