Line 7, characters 0-2:
7 | ;;
    ^^
Error: Syntax error: ")" expected
Line 6, characters 9-10:
6 |   | List.(_
             ^
  This "(" might be unmatched
Line 4, characters 0-2:
4 | ;;
    ^^
Error: Syntax error: ")" expected
Line 3, characters 4-5:
3 |   | (_
        ^
  This "(" might be unmatched
Line 4, characters 0-2:
4 | ;;
    ^^
Error: Syntax error: ")" expected
Line 3, characters 4-5:
3 |   | (_ : int
        ^
  This "(" might be unmatched
Line 6, characters 18-25:
6 |   | (module Foo : sig end
                      ^^^^^^^
Error: invalid package type: only module type identifier and "with type" constraints are supported
Line 7, characters 0-2:
7 | ;;
    ^^
Error: Syntax error: "}" expected
Line 6, characters 4-5:
6 |   | { foo; bar;
        ^
  This "{" might be unmatched
Line 4, characters 0-2:
4 | ;;
    ^^
Error: Syntax error: "]" expected
Line 3, characters 4-5:
3 |   | [ 1; 2;
        ^
  This "[" might be unmatched
Line 4, characters 0-2:
4 | ;;
    ^^
Error: Syntax error: "|]" expected
Line 3, characters 4-6:
3 |   | [| 3; 4;
        ^^
  This "[|" might be unmatched