buildbot failure in Mercurial on OS X 10.6 hg tests (stable)

[hgbuildbot at kublai.com]

The Buildbot has detected a new failure on builder OS X 10.6 hg tests (stable) while building hg.
Full details are available at:
 http://hgbuildbot.kublai.com/builders/OS%20X%2010.6%20hg%20tests%20%28stable%29/builds/102

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

Buildslave for this Build: sl

Build Reason: scheduler
Build Source Stamp: [branch stable] d9901eb3e42d89f65d5e9481f7e5abe6f72ba6aa
Blamelist: Brendan Cully <brendan at kublai.com>

BUILD FAILED: failed run-tests.py (python2.6) run-tests.py (python2.7)

sincerely,
 -The Buildbot