-../lib/core/collection/hash_collection.nit:275,3--6: Error: method or variable `init` unknown in `HashMap[K, V]`.
-../lib/core/collection/hash_collection.nit:473,3--6: Error: method or variable `init` unknown in `HashSet[E]`.
+../lib/core/collection/hash_collection.nit:275,3--6: Possible duplication of the root class `Object`
+../lib/core/collection/hash_collection.nit:473,3--6: Possible duplication of the root class `Object`