relax test_dont_hold_on_to_large_messages
I suspect that this mail fail sometimes because we refresh the reference to x
every 50ms, which may be too short for GC?  Just a guess.
@@ -269,7 +269,7 @@ def test_dont_hold_on_to_large_messages(c, s, a, b):
f.f_code.co_name, f.f_code.co_filename, sorted(f.f_locals))
pytest.fail("array should have been destroyed")
- yield gen.sleep(0.05)
+ yield gen.sleep(0.200)
@gen_test()
