Cannot run autopilot's own autopilot tests

I'm not even sure if this is a valid use case. If not, feel free to mark this bug Invalid.

If you adb shell into the emulator (but a touch device is also appropriate), and apt-get install all the autopilot packages, you can get a list of all the tests via `autopilot list autopilot`.

However, you cannot run these tests via `autopilot run autopilot` while adb shell'd in. Here's an excerpt of the types of failures you will see:

Traceback (most recent call last):
  File "/usr/lib/python2.7/dist-packages/autopilot/utilities.py", line 333, in action_on_test_end
    obj.on_test_end(test_instance)
  File "/usr/lib/python2.7/dist-packages/autopilot/input/_X11.py", line 478, in on_test_end
    move_mouse_to_screen(0)
  File "/usr/lib/python2.7/dist-packages/autopilot/display/__init__.py", line 59, in move_mouse_to_screen
    Mouse.create().move(x, y, False)
  File "/usr/lib/python2.7/dist-packages/autopilot/input/__init__.py", line 293, in create
    "Cannot create a Mouse on devices where X11 is not available."
RuntimeError: Cannot create a Mouse on devices where X11 is not available.
}}}
======================================================================
FAIL: autopilot.tests.unit.test_content.FileFollowerTests.test_follow_file_logs_error_on_IOError
----------------------------------------------------------------------
Traceback (most recent call last):
  File "/usr/lib/python2.7/dist-packages/autopilot/tests/unit/test_content.py", line 106, in test_follow_file_logs_error_on_IOError
    "[Errno 13] Permission denied: '%s'" % f.name
  File "/usr/lib/python2.7/dist-packages/mock.py", line 845, in assert_called_once_with
    raise AssertionError(msg)
AssertionError: Expected to be called once. Called 0 times.

Ran 726 tests in 521.330s
FAILED (failures=133)

If it's expected that `autopilot run autopilot` should work, please tell me how to run them correctly, and if they work for you.