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/219

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

Buildslave for this Build: sl

Build Reason: scheduler
Build Source Stamp: [branch default] c87ba0a6fb794b70416718486987b62ea0c176a6
Blamelist: Bryan O'Sullivan <bryano at fb.com>

BUILD FAILED: failed http2

sincerely,
 -The Buildbot