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/163

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

Buildslave for this Build: lion

Build Reason: scheduler
Build Source Stamp: [branch default] 8a38839ae1dcd8863b7afacfaa4020ca3daeb13f
Blamelist: Adrian Buehlmann <adrian at cadifra.com>,Eduard-Cristian Stefan <alexandrul.ct at gmail.com>,Mads Kiilerich <mads at kiilerich.com>

BUILD FAILED: failed http2

sincerely,
 -The Buildbot