windows build test failures

[changhiskhan]

getting test failures on the windows builds. this is from py27 64-bit:

======================================================================
ERROR: test_replace_convert (pandas.tests.test_frame.TestDataFrame)
----------------------------------------------------------------------
Traceback (most recent call last):
  File "C:\workspace\pandas-windows-test64-py27\pandas\tests\test_frame.py", line 6869, in test_replace_convert
    assert_series_equal(expec, res)
  File "C:\workspace\pandas-windows-test64-py27\pandas\util\testing.py", line 197, in assert_series_equal
    assert_almost_equal(left.values, right.values, check_less_precise)
  File "C:\workspace\pandas-windows-test64-py27\pandas\util\testing.py", line 141, in assert_almost_equal
    assert_almost_equal(a[i], b[i], check_less_precise)
  File "C:\workspace\pandas-windows-test64-py27\pandas\util\testing.py", line 146, in assert_almost_equal
    if isnull(a):
  File "C:\workspace\pandas-windows-test64-py27\pandas\core\common.py", line 60, in isnull
    return _isnull(obj)
  File "C:\workspace\pandas-windows-test64-py27\pandas\core\common.py", line 74, in _isnull_new
    return _isnull_ndarraylike(obj)
  File "C:\workspace\pandas-windows-test64-py27\pandas\core\common.py", line 135, in _isnull_ndarraylike
    values = np.asarray(obj)
  File "c:\python27\lib\site-packages\numpy\core\numeric.py", line 235, in asarray
    return array(a, dtype, copy=False, order=order)
ValueError: invalid __array_struct__

======================================================================
FAIL: test_insert_column_bug_4032 (pandas.tests.test_frame.TestDataFrame)
----------------------------------------------------------------------
Traceback (most recent call last):
  File "C:\workspace\pandas-windows-test64-py27\pandas\tests\test_frame.py", line 10084, in test_insert_column_bug_4032
    assert_frame_equal(result,expected)
  File "C:\workspace\pandas-windows-test64-py27\pandas\util\testing.py", line 238, in assert_frame_equal
    check_less_precise=check_less_precise)
  File "C:\workspace\pandas-windows-test64-py27\pandas\util\testing.py", line 199, in assert_series_equal
    assert(left.dtype == right.dtype)
AssertionError

[cpcloud]

From the numpy docs: "Objects exposing the __array_struct__ interface must also not reallocate their memory if other objects are referencing them."

@jreback is there a possible weak reference issue there?

[cpcloud]

@changhiskhan maybe a recompile might help?

[jreback]

there are some actual platform specific bugs....PR in a few

[cpcloud]

ah ok

[jreback]

@changhiskhan just merged in #4123, should hopefully build ok now

[changhiskhan]

sweet, i'll keep an eye on the build server

[jreback]

http://pandas.pydata.org/pandas-build/dev/

looks like builds are starting!

[cpcloud]

nice! looks like 0.12 is approaching! whoohoo

[jreback]

@changhiskhan fyi....prob should drop 3.1 and add 3.3 (not if you haven't already)