buildbot failure in Mercurial on OS X 10.7 hg tests

[hgbuildbot at kublai.com]

The Buildbot has detected a new failure on builder OS X 10.7 hg tests while building hg.
Full details are available at:
 http://hgbuildbot.kublai.com/builders/OS%20X%2010.7%20hg%20tests/builds/405

Buildbot URL: http://hgbuildbot.kublai.com/

Buildslave for this Build: lion

Build Reason: scheduler
Build Source Stamp: [branch default] f9eebf5629fa6282e069989d5d29af3d762657c8
Blamelist: Augie Fackler <raf at durin42.com>,Benoit Boissinot <benoit.boissinot at ens-lyon.org>,Bryan O'Sullivan <bryano at fb.com>,Kevin Bullock <kbullock at ringworld.org>,Na'Tosha Bard <natosha at unity3d.com>,Pierre-Yves David <pierre-yves.david at ens-lyon.org>,Siddharth Agarwal <sid0 at fb.com>,Simon Heimberg <simohe at besonet.ch>

BUILD FAILED: failed run-tests.py (python2.6) pure

sincerely,
 -The Buildbot