On my machine, the failure seems to come down to this:

Macintosh-4:py3k dickinsm$ MACOSX_DEPLOYMENT_TARGET=10.4 ./python.exe
Python 3.1a2+ (py3k:71845M, Apr 24 2009, 19:51:44) 
[GCC 4.0.1 (Apple Inc. build 5490)] on darwin
Type "help", "copyright", "credits" or "license" for more information.
>>> import operator
Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
ImportError: No module named operator

test_distutils (specifically, test_get_platform in 
Lib/distutils/tests/test_util.py) sets the MACOSX_DEPLOYMENT_TARGET
environment variable to 10.4;  apparently this affects the 'import 
operator' in test_httpservers.  I've no idea why.