Traceback (most recent call last):
  File "/usr/share/appgrid/appgrid.py", line 53, in <module>
    sc.show_details(args['request'])
  File "/usr/share/appgrid/widgets/sc.py", line 29, in show_details
    self.add(Details(pkgname))
  File "/usr/share/appgrid/widgets/details.py", line 15, in __init__
    self.app = get_client(pkgname)
  File "/usr/share/appgrid/appdata/clients.py", line 21, in get_client
    return DebFileApp(request)
  File "/usr/share/appgrid/appdata/apps/debfileapp.py", line 41, in __init__
    shutil.rmtree('/tmp/appgrid')
  File "/usr/lib/python3.4/shutil.py", line 463, in rmtree
    _rmtree_safe_fd(fd, path, onerror)
  File "/usr/lib/python3.4/shutil.py", line 421, in _rmtree_safe_fd
    onerror(os.unlink, fullname, sys.exc_info())
  File "/usr/lib/python3.4/shutil.py", line 419, in _rmtree_safe_fd
    os.unlink(name, dir_fd=topfd)
PermissionError: [Errno 13] Permesso negato: 'usr'