tool/test/test_ansi_print.py::test_output_disabled

def test_output_disabled():
        log = ansi_print.AnsiLogger('test')
>       with FakeOutput() as output:

tool/test/test_ansi_print.py:93: 
_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ 

self = <test_ansi_print.FakeOutput object at 0x7f5b01df1210>, args = ()

    def __enter__(self, *args):
        ansi_print.wrote_dot = False
>       self.monkey.setattr(ansi_print, 'ansi_print', self._print)
E       AttributeError: 'generator' object has no attribute 'setattr'

tool/test/test_ansi_print.py:12: AttributeError

builder: rpython-linux-x86-64 build #887

test: tool/test/test_ansi_print/py/test_output_disabled