put a test as a knowfailure. This way it won't distract people to look at it…

theano/compile/tests/test_module.py

@@ -403,7 +403,9 @@ def test_pickle():
     assert m_dup.x is m_dup.g.input_storage[1].data
     assert m_dup.y is m_dup.g.input_storage[2].data
 
+from numpy.testing import *
 
+@dec.knownfailureif(True, "These branch cuts are known to fail")
 def test_pickle_aliased_memory():
     M = Module()
     M.x = Member(T.dmatrix())