Grumpy AMD64 Windows10 3.x:
https://buildbot.python.org/all/#/builders/3/builds/3788

======================================================================
FAIL: test_realpath_cwd (test.test_ntpath.TestNtpath)
----------------------------------------------------------------------
Traceback (most recent call last):
  File "D:\buildarea\3.x.bolen-windows10\build\lib\test\test_ntpath.py", line 424, in test_realpath_cwd
    self.assertPathEqual(test_file_long, ntpath.realpath(test_file_short))
  File "D:\buildarea\3.x.bolen-windows10\build\lib\test\test_ntpath.py", line 62, in assertPathEqual
    self.assertEqual(path1, path2)
AssertionError: 'D:\\[76 chars]worker_6956\\@test_6956_tmp\\MyVeryLongDirectoryName\\file.txt' != 'D:\\[76 chars]worker_6956\\@test_6956_tmp\\MYVERY~1\\file.txt'
- D:\buildarea\3.x.bolen-windows10\build\build\test_python_6236\test_python_worker_6956\@test_6956_tmp\MyVeryLongDirectoryName\file.txt
?                                                                                                       ^ ^^^^^^^^^^^^^^^^^^^^
+ D:\buildarea\3.x.bolen-windows10\build\build\test_python_6236\test_python_worker_6956\@test_6956_tmp\MYVERY~1\file.txt
?                                                                                                       ^ ^^^^^

pythoninfo:

windows.RtlAreLongPathsEnabled: False