test_coherence_linear_dependence consistently fails

[yarikoptic]

======================================================================
FAIL: Tests that the coherence between two linearly dependent time-series
----------------------------------------------------------------------
Traceback (most recent call last):
  File "/usr/lib/python2.7/dist-packages/nose/case.py", line 197, in runTest
    self.test(*self.arg)
  File "/build/nitime-0.7/debian/tmp/usr/lib/python2.7/dist-packages/nitime/algorithms/tests/test_coherence.py", line 244, in test_coherence_linear_dependence
    npt.assert_array_almost_equal(c[0, 1], c_t, 2)
  File "/usr/lib/python2.7/dist-packages/numpy/testing/utils.py", line 979, in assert_array_almost_equal
    precision=decimal)
  File "/usr/lib/python2.7/dist-packages/numpy/testing/utils.py", line 796, in assert_array_compare
    raise AssertionError(msg)
AssertionError: 
Arrays are not almost equal to 2 decimals

(mismatch 99.1219512195%)
 x: array([ 0.99,  1.  ,  1.  , ...,  0.81,  0.88,  0.93])
 y: array([ 1.  ,  0.99,  1.  , ...,  1.01,  0.99,  1.  ])

may be due to having numpy 1.12.0~rc2