2 "tcfail014.hs", line 5:
3 Type variable "ot8" occurs within the type "ot8 -> ot9".
4 Too many arguments in application of function "z"
6 "tcfail014.hs", line 6: No such instance:
7 class "Num", type "tt19 -> tt20" (at an overloaded literal: 1)
8 Fail: Compilation errors found
10 ghc: execution of the Haskell compiler had trouble