this obviously is not going to raise any -3 warnings

Lib/test/test_struct.py

@@ -497,14 +497,11 @@ class StructTest(unittest.TestCase):
             self.test_unpack_from(cls=buffer)
 
     def test_unpack_with_memoryview(self):
-        with check_py3k_warnings(("buffer.. not supported in 3.x",
-                                  DeprecationWarning)):
         # SF bug 1563759: struct.unpack doesn't support buffer protocol objects
         data1 = memoryview('\x12\x34\x56\x78')
         for data in [data1,]:
             value, = struct.unpack('>I', data)
             self.assertEqual(value, 0x12345678)
-
         self.test_unpack_from(cls=memoryview)
 
     def test_bool(self):