alt/base_closure6_alt1.nit:54,5--25: Type error: expected U, got T
alt/base_closure6_alt1.nit:56,25: Type error: no most general type. Got V and U.
alt/base_closure6_alt1.nit:58,5--66,8: Type error: expected U, got T
alt/base_closure6_alt1.nit:73,8: Type error: no most general type. Got V and U at 71,8.