-test_paire.nit:45,7--10: Error: A class Pair is already defined at line 17.
-test_paire.nit:54,7--10: Error: A class Pair is already defined at line 17.
+test_paire.nit:45,7--10: Error: a class `Pair` is already defined at line 17.
+test_paire.nit:54,7--10: Error: a class `Pair` is already defined at line 17.