Oh, the test also failed on Python 3.5 (on "AMD64 Windows8.1 Refleaks 3.5" buildbot):
http://buildbot.python.org/all/builders/AMD64%20Windows8.1%20Refleaks%203.5/builds/62/steps/test/logs/stdio
======================================================================
ERROR: test_use (tkinter.test.test_tkinter.test_widgets.ToplevelTest) (wid='0xffffffff87a60298')
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Traceback (most recent call last):
File "D:\buildarea\3.5.ware-win81-release.refleak\build\lib\tkinter\test\test_tkinter\test_widgets.py", line 96, in test_use
widget2 = self.create(use=wid)
File "D:\buildarea\3.5.ware-win81-release.refleak\build\lib\tkinter\test\test_tkinter\test_widgets.py", line 70, in create
return tkinter.Toplevel(self.root, **kwargs)
File "D:\buildarea\3.5.ware-win81-release.refleak\build\lib\tkinter\__init__.py", line 2190, in __init__
BaseWidget.__init__(self, master, 'toplevel', cnf, {}, extra)
File "D:\buildarea\3.5.ware-win81-release.refleak\build\lib\tkinter\__init__.py", line 2147, in __init__
(widgetName, self._w) + extra + self._options(cnf))
_tkinter.TclError: integer value too large to represent