def test_confusion_from_os_write_stderr(self):

       channel = self.gw.remote_exec("""

               import os

               os.write(2, 'test')

               channel.send(channel.receive() * 6)

               channel.send(channel.receive() * 6)

           """)

->     channel.send(3)

       res = channel.receive()

       assert res == 18

       channel.send(7)

       res = channel.receive()

       assert res == 42