-../lib/standard/kernel.nit:101,1--117,3: Error: kernel#Sys does not specialize module_0#Object. Possible duplication of the root class `Object`?
+../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`