old_contents: #!/usr/bin/env python
  
  from setuptools import setup, find_packages
  
  setup(packages=find_packages())
  
new_contents: #!/usr/bin/env python
  
  from setuptools import setup, find_packages
  
  setup(name='debian-devel-changes-bot', packages=find_packages())
  
subject: Use a name= kwarg to avoid UNKNOWN.