buildbot failure in Mercurial on OS X 10.7 hg tests

[hgbuildbot at kublai.com]

The Buildbot has detected a new failure on builder OS X 10.7 hg tests while building hg.
Full details are available at:
 http://hgbuildbot.kublai.com/builders/OS%20X%2010.7%20hg%20tests/builds/197

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

Buildslave for this Build: lion

Build Reason: scheduler
Build Source Stamp: [branch default] d592759aabc7f1675a6c9c7b287219f8265ced10
Blamelist: Bryan O'Sullivan <bryano at fb.com>,FUJIWARA Katsunori <foozy at lares.dti.ne.jp>

BUILD FAILED: failed http2

sincerely,
 -The Buildbot