SOURCE_FILE@0..187
  TYPE_ALIAS@0..35
    TYPE_KW@0..4 "type"
    WHITESPACE@4..5 " "
    NAME@5..8
      IDENT@5..8 "Foo"
    GENERIC_PARAM_LIST@8..12
      L_ANGLE@8..9 "<"
      LIFETIME_PARAM@9..11
        LIFETIME@9..11
          LIFETIME_IDENT@9..11 "'a"
      R_ANGLE@11..12 ">"
    WHITESPACE@12..13 " "
    EQ@13..14 "="
    WHITESPACE@14..15 " "
    REF_TYPE@15..34
      AMP@15..16 "&"
      LIFETIME@16..18
        LIFETIME_IDENT@16..18 "'a"
      WHITESPACE@18..19 " "
      DYN_TRAIT_TYPE@19..34
        DYN_KW@19..22 "dyn"
        WHITESPACE@22..23 " "
        TYPE_BOUND_LIST@23..34
          TYPE_BOUND@23..27
            PATH_TYPE@23..27
              PATH@23..27
                PATH_SEGMENT@23..27
                  NAME_REF@23..27
                    IDENT@23..27 "Send"
          WHITESPACE@27..28 " "
          PLUS@28..29 "+"
          WHITESPACE@29..30 " "
          TYPE_BOUND@30..34
            PATH_TYPE@30..34
              PATH@30..34
                PATH_SEGMENT@30..34
                  NAME_REF@30..34
                    IDENT@30..34 "Sync"
    SEMICOLON@34..35 ";"
  WHITESPACE@35..36 "\n"
  TYPE_ALIAS@36..70
    TYPE_KW@36..40 "type"
    WHITESPACE@40..41 " "
    NAME@41..44
      IDENT@41..44 "Foo"
    WHITESPACE@44..45 " "
    EQ@45..46 "="
    WHITESPACE@46..47 " "
    PTR_TYPE@47..69
      STAR@47..48 "*"
      CONST_KW@48..53 "const"
      WHITESPACE@53..54 " "
      DYN_TRAIT_TYPE@54..69
        DYN_KW@54..57 "dyn"
        WHITESPACE@57..58 " "
        TYPE_BOUND_LIST@58..69
          TYPE_BOUND@58..62
            PATH_TYPE@58..62
              PATH@58..62
                PATH_SEGMENT@58..62
                  NAME_REF@58..62
                    IDENT@58..62 "Send"
          WHITESPACE@62..63 " "
          PLUS@63..64 "+"
          WHITESPACE@64..65 " "
          TYPE_BOUND@65..69
            PATH_TYPE@65..69
              PATH@65..69
                PATH_SEGMENT@65..69
                  NAME_REF@65..69
                    IDENT@65..69 "Sync"
    SEMICOLON@69..70 ";"
  WHITESPACE@70..71 "\n"
  TYPE_ALIAS@71..109
    TYPE_KW@71..75 "type"
    WHITESPACE@75..76 " "
    NAME@76..79
      IDENT@76..79 "Foo"
    WHITESPACE@79..80 " "
    EQ@80..81 "="
    WHITESPACE@81..82 " "
    FN_PTR_TYPE@82..108
      FN_KW@82..84 "fn"
      PARAM_LIST@84..86
        L_PAREN@84..85 "("
        R_PAREN@85..86 ")"
      WHITESPACE@86..87 " "
      RET_TYPE@87..108
        THIN_ARROW@87..89 "->"
        WHITESPACE@89..90 " "
        DYN_TRAIT_TYPE@90..108
          DYN_KW@90..93 "dyn"
          WHITESPACE@93..94 " "
          TYPE_BOUND_LIST@94..108
            TYPE_BOUND@94..98
              PATH_TYPE@94..98
                PATH@94..98
                  PATH_SEGMENT@94..98
                    NAME_REF@94..98
                      IDENT@94..98 "Send"
            WHITESPACE@98..99 " "
            PLUS@99..100 "+"
            WHITESPACE@100..101 " "
            TYPE_BOUND@101..108
              LIFETIME@101..108
                LIFETIME_IDENT@101..108 "'static"
    SEMICOLON@108..109 ";"
  WHITESPACE@109..110 "\n"
  FN@110..186
    FN_KW@110..112 "fn"
    WHITESPACE@112..113 " "
    NAME@113..117
      IDENT@113..117 "main"
    PARAM_LIST@117..119
      L_PAREN@117..118 "("
      R_PAREN@118..119 ")"
    WHITESPACE@119..120 " "
    BLOCK_EXPR@120..186
      L_CURLY@120..121 "{"
      WHITESPACE@121..126 "\n    "
      LET_STMT@126..184
        LET_KW@126..129 "let"
        WHITESPACE@129..130 " "
        IDENT_PAT@130..131
          NAME@130..131
            IDENT@130..131 "b"
        WHITESPACE@131..132 " "
        EQ@132..133 "="
        WHITESPACE@133..134 " "
        CAST_EXPR@134..183
          PAREN_EXPR@134..138
            L_PAREN@134..135 "("
            REF_EXPR@135..137
              AMP@135..136 "&"
              PATH_EXPR@136..137
                PATH@136..137
                  PATH_SEGMENT@136..137
                    NAME_REF@136..137
                      IDENT@136..137 "a"
            R_PAREN@137..138 ")"
          WHITESPACE@138..139 " "
          AS_KW@139..141 "as"
          WHITESPACE@141..142 " "
          REF_TYPE@142..183
            AMP@142..143 "&"
            DYN_TRAIT_TYPE@143..183
              DYN_KW@143..146 "dyn"
              WHITESPACE@146..147 " "
              TYPE_BOUND_LIST@147..183
                TYPE_BOUND@147..175
                  PATH_TYPE@147..175
                    PATH@147..175
                      PATH_SEGMENT@147..175
                        NAME_REF@147..150
                          IDENT@147..150 "Add"
                        GENERIC_ARG_LIST@150..175
                          L_ANGLE@150..151 "<"
                          TYPE_ARG@151..156
                            PATH_TYPE@151..156
                              PATH@151..156
                                PATH_SEGMENT@151..156
                                  NAME_REF@151..156
                                    IDENT@151..156 "Other"
                          COMMA@156..157 ","
                          WHITESPACE@157..158 " "
                          ASSOC_TYPE_ARG@158..174
                            NAME_REF@158..164
                              IDENT@158..164 "Output"
                            WHITESPACE@164..165 " "
                            EQ@165..166 "="
                            WHITESPACE@166..167 " "
                            PATH_TYPE@167..174
                              PATH@167..174
                                PATH_SEGMENT@167..174
                                  NAME_REF@167..174
                                    IDENT@167..174 "Addable"
                          R_ANGLE@174..175 ">"
                WHITESPACE@175..176 " "
                PLUS@176..177 "+"
                WHITESPACE@177..178 " "
                TYPE_BOUND@178..183
                  PATH_TYPE@178..183
                    PATH@178..183
                      PATH_SEGMENT@178..183
                        NAME_REF@178..183
                          IDENT@178..183 "Other"
        SEMICOLON@183..184 ";"
      WHITESPACE@184..185 "\n"
      R_CURLY@185..186 "}"
  WHITESPACE@186..187 "\n"
error 19..34: ambiguous `+` in a type
error 54..69: ambiguous `+` in a type
error 90..108: ambiguous `+` in a type
error 143..183: ambiguous `+` in a type