Error found:
in module Main
at tests/purs/failing/Rank2Types.purs:8:25 - 8:26 (line 8, column 25 - line 8, column 26)

  Could not match type
       
    Int
       
  with type
      
    a0
      

while checking that type Int
  is at least as general as type a0
while checking that expression 1
  has type a0
in value declaration test1

where a0 is a rigid type variable
        bound at (line 8, column 14 - line 8, column 27)

See https://github.com/purescript/documentation/blob/master/errors/TypesDoNotUnify.md for more information,
or to contribute content related to this error.