alt/base_closure6_alt1.nit:53,5--25: Type error: expected U, got T
alt/base_closure6_alt1.nit:55,25: Type error: no most general type. Got V and U.
alt/base_closure6_alt1.nit:57,5--61,8: Type error: expected U, got T
alt/base_closure6_alt1.nit:65,8: Type error: no most general type. Got V and U at 64,8.