SOURCE_FILE@0..240
  FN@0..53
    FN_KW@0..2 "fn"
    WHITESPACE@2..3 " "
    NAME@3..4
      IDENT@3..4 "f"
    GENERIC_PARAM_LIST@4..48
      L_ANGLE@4..5 "<"
      TYPE_PARAM@5..47
        NAME@5..6
          IDENT@5..6 "T"
        COLON@6..7 ":"
        WHITESPACE@7..8 " "
        TYPE_BOUND_LIST@8..47
          TYPE_BOUND@8..14
            L_PAREN@8..9 "("
            PATH_TYPE@9..13
              PATH@9..13
                PATH_SEGMENT@9..13
                  NAME_REF@9..13
                    IDENT@9..13 "Copy"
            R_PAREN@13..14 ")"
          WHITESPACE@14..15 " "
          PLUS@15..16 "+"
          WHITESPACE@16..17 " "
          TYPE_BOUND@17..25
            L_PAREN@17..18 "("
            QUESTION@18..19 "?"
            PATH_TYPE@19..24
              PATH@19..24
                PATH_SEGMENT@19..24
                  NAME_REF@19..24
                    IDENT@19..24 "Sized"
            R_PAREN@24..25 ")"
          WHITESPACE@25..26 " "
          PLUS@26..27 "+"
          WHITESPACE@27..28 " "
          TYPE_BOUND@28..47
            L_PAREN@28..29 "("
            FOR_TYPE@29..46
              FOR_KW@29..32 "for"
              GENERIC_PARAM_LIST@32..36
                L_ANGLE@32..33 "<"
                LIFETIME_PARAM@33..35
                  LIFETIME@33..35
                    LIFETIME_IDENT@33..35 "\'a"
                R_ANGLE@35..36 ">"
              WHITESPACE@36..37 " "
              PATH_TYPE@37..46
                PATH@37..46
                  PATH_SEGMENT@37..46
                    NAME_REF@37..42
                      IDENT@37..42 "Trait"
                    GENERIC_ARG_LIST@42..46
                      L_ANGLE@42..43 "<"
                      LIFETIME_ARG@43..45
                        LIFETIME@43..45
                          LIFETIME_IDENT@43..45 "\'a"
                      R_ANGLE@45..46 ">"
            R_PAREN@46..47 ")"
      R_ANGLE@47..48 ">"
    PARAM_LIST@48..50
      L_PAREN@48..49 "("
      R_PAREN@49..50 ")"
    WHITESPACE@50..51 " "
    BLOCK_EXPR@51..53
      L_CURLY@51..52 "{"
      R_CURLY@52..53 "}"
  WHITESPACE@53..55 "\n\n"
  FN@55..239
    FN_KW@55..57 "fn"
    WHITESPACE@57..58 " "
    NAME@58..62
      IDENT@58..62 "main"
    PARAM_LIST@62..64
      L_PAREN@62..63 "("
      R_PAREN@63..64 ")"
    WHITESPACE@64..65 " "
    BLOCK_EXPR@65..239
      L_CURLY@65..66 "{"
      WHITESPACE@66..71 "\n    "
      LET_STMT@71..121
        LET_KW@71..74 "let"
        WHITESPACE@74..75 " "
        WILDCARD_PAT@75..76
          UNDERSCORE@75..76 "_"
        COLON@76..77 ":"
        WHITESPACE@77..78 " "
        DYN_TRAIT_TYPE@78..121
          TYPE_BOUND_LIST@78..121
            TYPE_BOUND@78..88
              PATH_TYPE@78..88
                PATH@78..88
                  PATH_SEGMENT@78..88
                    NAME_REF@78..81
                      IDENT@78..81 "Box"
                    GENERIC_ARG_LIST@81..88
                      L_ANGLE@81..82 "<"
                      TYPE_ARG@82..88
                        PAREN_TYPE@82..88
                          L_PAREN@82..83 "("
                          PATH_TYPE@83..87
                            PATH@83..87
                              PATH_SEGMENT@83..87
                                NAME_REF@83..87
                                  IDENT@83..87 "Copy"
                          R_PAREN@87..88 ")"
            WHITESPACE@88..89 " "
            PLUS@89..90 "+"
            WHITESPACE@90..91 " "
            TYPE_BOUND@91..99
              L_PAREN@91..92 "("
              QUESTION@92..93 "?"
              PATH_TYPE@93..98
                PATH@93..98
                  PATH_SEGMENT@93..98
                    NAME_REF@93..98
                      IDENT@93..98 "Sized"
              R_PAREN@98..99 ")"
            WHITESPACE@99..100 " "
            PLUS@100..101 "+"
            WHITESPACE@101..102 " "
            TYPE_BOUND@102..121
              L_PAREN@102..103 "("
              FOR_TYPE@103..120
                FOR_KW@103..106 "for"
                GENERIC_PARAM_LIST@106..110
                  L_ANGLE@106..107 "<"
                  LIFETIME_PARAM@107..109
                    LIFETIME@107..109
                      LIFETIME_IDENT@107..109 "\'a"
                  R_ANGLE@109..110 ">"
                WHITESPACE@110..111 " "
                PATH_TYPE@111..120
                  PATH@111..120
                    PATH_SEGMENT@111..120
                      NAME_REF@111..116
                        IDENT@111..116 "Trait"
                      GENERIC_ARG_LIST@116..120
                        L_ANGLE@116..117 "<"
                        LIFETIME_ARG@117..119
                          LIFETIME@117..119
                            LIFETIME_IDENT@117..119 "\'a"
                        R_ANGLE@119..120 ">"
              R_PAREN@120..121 ")"
      EXPR_STMT@121..123
        ERROR@121..122
          R_ANGLE@121..122 ">"
        SEMICOLON@122..123 ";"
      WHITESPACE@123..128 "\n    "
      LET_STMT@128..141
        LET_KW@128..131 "let"
        WHITESPACE@131..132 " "
        WILDCARD_PAT@132..133
          UNDERSCORE@132..133 "_"
        COLON@133..134 ":"
        WHITESPACE@134..135 " "
        PATH_TYPE@135..141
          PATH@135..141
            PATH_SEGMENT@135..141
              NAME_REF@135..138
                IDENT@135..138 "Box"
              GENERIC_ARG_LIST@138..141
                L_ANGLE@138..139 "<"
                TYPE_ARG@139..141
                  PAREN_TYPE@139..141
                    L_PAREN@139..140 "("
                    ERROR@140..141
                      QUESTION@140..141 "?"
      EXPR_STMT@141..146
        PATH_EXPR@141..146
          PATH@141..146
            PATH_SEGMENT@141..146
              NAME_REF@141..146
                IDENT@141..146 "Sized"
      EXPR_STMT@146..147
        ERROR@146..147
          R_PAREN@146..147 ")"
      WHITESPACE@147..148 " "
      EXPR_STMT@148..149
        ERROR@148..149
          PLUS@148..149 "+"
      WHITESPACE@149..150 " "
      EXPR_STMT@150..180
        TUPLE_EXPR@150..180
          L_PAREN@150..151 "("
          FOR_EXPR@151..180
            FOR_KW@151..154 "for"
            PATH_PAT@154..158
              PATH@154..158
                PATH_SEGMENT@154..158
                  L_ANGLE@154..155 "<"
                  ERROR@155..157
                    LIFETIME_IDENT@155..157 "\'a"
                  R_ANGLE@157..158 ">"
            WHITESPACE@158..159 " "
            BIN_EXPR@159..180
              BIN_EXPR@159..178
                BIN_EXPR@159..169
                  BIN_EXPR@159..167
                    PATH_EXPR@159..164
                      PATH@159..164
                        PATH_SEGMENT@159..164
                          NAME_REF@159..164
                            IDENT@159..164 "Trait"
                    L_ANGLE@164..165 "<"
                    ERROR@165..167
                      LIFETIME_IDENT@165..167 "\'a"
                  R_ANGLE@167..168 ">"
                  ERROR@168..169
                    R_PAREN@168..169 ")"
                WHITESPACE@169..170 " "
                PLUS@170..171 "+"
                WHITESPACE@171..172 " "
                PAREN_EXPR@172..178
                  L_PAREN@172..173 "("
                  PATH_EXPR@173..177
                    PATH@173..177
                      PATH_SEGMENT@173..177
                        NAME_REF@173..177
                          IDENT@173..177 "Copy"
                  R_PAREN@177..178 ")"
              R_ANGLE@178..179 ">"
              ERROR@179..180
                SEMICOLON@179..180 ";"
      WHITESPACE@180..185 "\n    "
      LET_STMT@185..235
        LET_KW@185..188 "let"
        WHITESPACE@188..189 " "
        WILDCARD_PAT@189..190
          UNDERSCORE@189..190 "_"
        COLON@190..191 ":"
        WHITESPACE@191..192 " "
        DYN_TRAIT_TYPE@192..235
          TYPE_BOUND_LIST@192..235
            TYPE_BOUND@192..215
              PATH_TYPE@192..215
                PATH@192..215
                  PATH_SEGMENT@192..215
                    NAME_REF@192..195
                      IDENT@192..195 "Box"
                    GENERIC_ARG_LIST@195..215
                      L_ANGLE@195..196 "<"
                      TYPE_ARG@196..215
                        PAREN_TYPE@196..215
                          L_PAREN@196..197 "("
                          FOR_TYPE@197..214
                            FOR_KW@197..200 "for"
                            GENERIC_PARAM_LIST@200..204
                              L_ANGLE@200..201 "<"
                              LIFETIME_PARAM@201..203
                                LIFETIME@201..203
                                  LIFETIME_IDENT@201..203 "\'a"
                              R_ANGLE@203..204 ">"
                            WHITESPACE@204..205 " "
                            PATH_TYPE@205..214
                              PATH@205..214
                                PATH_SEGMENT@205..214
                                  NAME_REF@205..210
                                    IDENT@205..210 "Trait"
                                  GENERIC_ARG_LIST@210..214
                                    L_ANGLE@210..211 "<"
                                    LIFETIME_ARG@211..213
                                      LIFETIME@211..213
                                        LIFETIME_IDENT@211..213 "\'a"
                                    R_ANGLE@213..214 ">"
                          R_PAREN@214..215 ")"
            WHITESPACE@215..216 " "
            PLUS@216..217 "+"
            WHITESPACE@217..218 " "
            TYPE_BOUND@218..224
              L_PAREN@218..219 "("
              PATH_TYPE@219..223
                PATH@219..223
                  PATH_SEGMENT@219..223
                    NAME_REF@219..223
                      IDENT@219..223 "Copy"
              R_PAREN@223..224 ")"
            WHITESPACE@224..225 " "
            PLUS@225..226 "+"
            WHITESPACE@226..227 " "
            TYPE_BOUND@227..235
              L_PAREN@227..228 "("
              QUESTION@228..229 "?"
              PATH_TYPE@229..234
                PATH@229..234
                  PATH_SEGMENT@229..234
                    NAME_REF@229..234
                      IDENT@229..234 "Sized"
              R_PAREN@234..235 ")"
      EXPR_STMT@235..237
        ERROR@235..236
          R_ANGLE@235..236 ">"
        SEMICOLON@236..237 ";"
      WHITESPACE@237..238 "\n"
      R_CURLY@238..239 "}"
  WHITESPACE@239..240 "\n"
error 88..88: expected COMMA
error 88..88: expected R_ANGLE
error 121..121: expected SEMICOLON
error 121..121: expected expression
error 140..140: expected type
error 141..141: expected R_PAREN
error 141..141: expected COMMA
error 141..141: expected R_ANGLE
error 141..141: expected SEMICOLON
error 146..146: expected SEMICOLON
error 146..146: expected expression
error 147..147: expected SEMICOLON
error 148..148: expected expression
error 149..149: expected SEMICOLON
error 155..155: expected type
error 158..158: expected IN_KW
error 165..165: expected expression
error 168..168: expected expression
error 179..179: expected expression
error 180..180: expected a block
error 180..180: expected COMMA
error 180..180: expected expression
error 180..180: expected R_PAREN
error 180..180: expected SEMICOLON
error 215..215: expected COMMA
error 215..215: expected R_ANGLE
error 235..235: expected SEMICOLON
error 235..235: expected expression