reminisce opened a new issue #17304: [flaky] 
URL: https://github.com/apache/incubator-mxnet/issues/17304
 
 
   ```
   ======================================================================
   
   FAIL: test_higher_order_grad.test_tanh
   
   ----------------------------------------------------------------------
   
   Traceback (most recent call last):
   
     File "/usr/local/lib/python3.5/dist-packages/nose/case.py", line 198, in 
runTest
   
       self.test(*self.arg)
   
     File "/work/mxnet/tests/python/unittest/common.py", line 221, in test_new
   
       orig_test(*args, **kwargs)
   
     File "/work/mxnet/tests/python/unittest/test_higher_order_grad.py", line 
133, in test_tanh
   
       array, tanh, grad_grad_op, rtol=1e-6, atol=1e-6)
   
     File "/work/mxnet/tests/python/unittest/test_higher_order_grad.py", line 
466, in check_second_order_unary
   
       check_nth_order_unary(x, op, grad_grad_op, 2, rtol, atol)
   
     File "/work/mxnet/tests/python/unittest/test_higher_order_grad.py", line 
536, in check_nth_order_unary
   
       expected_grad, computed_grad.asnumpy(), rtol=rtol, atol=atol)
   
     File "/work/mxnet/python/mxnet/test_utils.py", line 627, in 
assert_almost_equal
   
       raise AssertionError(msg)
   
   AssertionError: 
   
   Items are not equal:
   
   Error 1.130471 exceeds tolerance rtol=1.000000e-06, atol=1.000000e-06 
(mismatch 0.185185%).
   
   Location of maximum error: (0, 1, 4, 2), a=-0.09405555, b=-0.09405431
   
    ACTUAL: array([[[[ 0.33143836, -0.05487783, -0.06937446,  0.00169096,
   
              0.7525308 ,  0.5379254 ],
   
            [ 0.25605297, -0.03728245,  0.37168074,  0.7428499 ,...
   
    DESIRED: array([[[[ 0.33143836, -0.05487783, -0.06937446,  0.00169096,
   
              0.7525309 ,  0.5379254 ],
   
            [ 0.256053  , -0.03728245,  0.37168077,  0.7428501 ,...
   
   -------------------- >> begin captured stdout << ---------------------
   
   
   
   *** Maximum errors for vector of size 540:  rtol=1e-06, atol=1e-06
   
   
   
     1: Error 1.130471  Location of error: (0, 1, 4, 2), a=-0.09405555, 
b=-0.09405431
   ```
   
   
http://jenkins.mxnet-ci.amazon-ml.com/blue/organizations/jenkins/mxnet-validation%2Funix-cpu/detail/PR-17249/5/pipeline

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