buildbot failure in Mercurial on OS X 10.7 hg tests (stable)

[hgbuildbot at kublai.com]

The Buildbot has detected a new failure on builder OS X 10.7 hg tests (stable) while building hg.
Full details are available at:
 http://hgbuildbot.kublai.com/builders/OS%20X%2010.7%20hg%20tests%20%28stable%29/builds/125

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

Buildslave for this Build: lion

Build Reason: scheduler
Build Source Stamp: [branch stable] 40cdf8bc8d4037405e52a1a2c491c3fb54153575
Blamelist: Bryan O'Sullivan <bryano at fb.com>,Mads Kiilerich <mads at kiilerich.com>,Matt Mackall <mpm at selenic.com>,Pierre-Yves David <pierre-yves.david at logilab.fr>,Wagner Bruna <wbruna at softwareexpress.com.br>

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

sincerely,
 -The Buildbot