py36 integration test bustage (on osx?)

[escapewindow]

This doesn't affect travis, which is good, but that may just be because travis doesn't run integration tests.

________________________ test_run_maxtimeout[context_function0] ________________________

event_loop = <_UnixSelectorEventLoop running=False closed=False debug=False>
context_function = <function get_context at 0x111b76158>

    @pytest.mark.skipif(os.environ.get("NO_TESTS_OVER_WIRE"), reason=SKIP_REASON)
    @pytest.mark.parametrize("context_function", [get_context, get_temp_creds_context])
    def test_run_maxtimeout(event_loop, context_function):
        task_id = slugid.nice().decode('utf-8')
        task_group_id = slugid.nice().decode('utf-8')
        partial_config = {
            'task_max_timeout': 2,
        }
        with context_function(partial_config) as context:
            result = event_loop.run_until_complete(
                create_task(context, task_id, task_group_id)
            )
            assert result['status']['state'] == 'pending'
            with remember_cwd():
                os.chdir(os.path.dirname(context.config['work_dir']))
                with pytest.raises(RuntimeError):
                    event_loop.run_until_complete(
>                       worker.run_loop(context, creds_key="integration_credentials")
                    )
E                   Failed: DID NOT RAISE <class 'RuntimeError'>

scriptworker/test/test_integration.py:179: Failed
________________________ test_run_maxtimeout[context_function1] ________________________

event_loop = <_UnixSelectorEventLoop running=False closed=False debug=False>
context_function = <function get_temp_creds_context at 0x111b762f0>

    @pytest.mark.skipif(os.environ.get("NO_TESTS_OVER_WIRE"), reason=SKIP_REASON)
    @pytest.mark.parametrize("context_function", [get_context, get_temp_creds_context])
    def test_run_maxtimeout(event_loop, context_function):
        task_id = slugid.nice().decode('utf-8')
        task_group_id = slugid.nice().decode('utf-8')
        partial_config = {
            'task_max_timeout': 2,
        }
        with context_function(partial_config) as context:
            result = event_loop.run_until_complete(
                create_task(context, task_id, task_group_id)
            )
            assert result['status']['state'] == 'pending'
            with remember_cwd():
                os.chdir(os.path.dirname(context.config['work_dir']))
                with pytest.raises(RuntimeError):
                    event_loop.run_until_complete(
>                       worker.run_loop(context, creds_key="integration_credentials")
                    )
E                   Failed: DID NOT RAISE <class 'RuntimeError'>

scriptworker/test/test_integration.py:179: Failed
======================== 2 failed, 374 passed in 179.57 seconds ========================
ERROR: InvocationError: '/Users/asasaki/src/tc/scriptworker/.tox/py36/bin/py.test --cov-config .coveragerc --cov=scriptworker --cov-report term-missing'
_______________________________________ summary ________________________________________
ERROR:   py36: commands failed