old_contents: <warning descr="Dictionary comprehension is not supported in Python 2">{k: v for k, v in stuff}</warning>
  
  try:
    pass
  <warning descr="This Python version does not support this syntax">except a as name:
    pass</warning>
  
  class A(B):
    def foo(self):
      <warning descr="super() should have arguments in Python 2">super()</warning>
  
  <warning descr="Python 2 does not support set literal expressions">{1, 2}</warning>
  
  <warning descr="Python 2 does not support star expressions">*b</warning>, c = 1, 2, 3, 4, 5
  
  if <warning descr="<> is deprecated, use != instead">a <> 2</warning>:
      pass
new_contents: <warning descr="Dictionary comprehension is not supported in Python 2">{k: v for k, v in stuff}</warning>
  
  try:
    pass
  <warning descr="This Python version does not support this syntax">except a as name:
    pass</warning>
  
  class A(B):
    def foo(self):
      <warning descr="super() should have arguments in Python 2">super()</warning>
  
  <warning descr="This Python version does not support set literal expressions">{1, 2}</warning>
  
  <warning descr="Python 2 does not support star expressions">*b</warning>, c = 1, 2, 3, 4, 5
  
  if <warning descr="<> is deprecated, use != instead">a <> 2</warning>:
      pass
subject: fix test