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/179

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

Buildslave for this Build: sl

Build Reason: scheduler
Build Source Stamp: [branch default] fba17a64fa4978bfea19222da5e64a18cfddeecd
Blamelist: Adrian Buehlmann <adrian at cadifra.com>,Bryan O'Sullivan <bryano at fb.com>,Christian Ebert <blacktrash at gmx.net>,Matt Mackall <mpm at selenic.com>,Pierre-Yves David <pierre-yves.david at ens-lyon.org>

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

sincerely,
 -The Buildbot