buildbot failure in Mercurial on OS X 10.6 hg tests

[hgbuildbot at kublai.com]

The Buildbot has detected a new failure on builder OS X 10.6 hg tests while building hg.
Full details are available at:
 http://hgbuildbot.kublai.com/builders/OS%20X%2010.6%20hg%20tests/builds/446

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

Buildslave for this Build: sl

Build Reason: scheduler
Build Source Stamp: [branch default] a8648f32b8edd6eff6bc600b93d7e83c2e05e650
Blamelist: Augie Fackler <raf at durin42.com>,Bryan O'Sullivan <bryano at fb.com>,Kevin Bullock <kbullock at ringworld.org>,Matt Mackall <mpm at selenic.com>,Pierre-Yves David <pierre-yves.david at ens-lyon.org>

BUILD FAILED: failed pure

sincerely,
 -The Buildbot