-./base_closure6.nit:55,25--25: Type error: expected U, got V
-./base_closure6.nit:65,8--8: Type error: expected U, got V
+base_closure6.nit:57,25: Type error: no most general type. Got V and U.
+base_closure6.nit:74,8: Type error: no most general type. Got V and U at 72,8.