2 rnfail008.hs:18: Warning: no explicit method nor default method for `op1'
3 in an instance declaration for `K'
5 rnfail008.hs:18: Warning: no explicit method nor default method for `op2'
6 in an instance declaration for `K'
8 rnfail008.hs:14: Warning: no explicit method nor default method for `op2'
9 in an instance declaration for `K'
11 rnfail008.hs:18: Class `K' does not have a method `op3'
13 Compilation had errors