"Touching generated files failed" step fails on System Z Linux buildbot (http://buildbot.python.org/all/builders/System%20Z%20Linux%203.x/builds/1157/steps/shell/logs/stdio):

hg --config extensions.touch=Tools/hg/hgtouch.py touch -v
** unknown exception encountered, details follow
** report bug details to http://www.selenic.com/mercurial/bts
** or mercurial@selenic.com
** Mercurial Distributed SCM (version 1.0.2)
Traceback (most recent call last):
  File "/usr/bin/hg", line 20, in <module>
    mercurial.dispatch.run()
  File "/usr/lib64/python2.6/site-packages/mercurial/dispatch.py", line 20, in run
    sys.exit(dispatch(sys.argv[1:]))
  File "/usr/lib64/python2.6/site-packages/mercurial/dispatch.py", line 29, in dispatch
    return _runcatch(u, args)
  File "/usr/lib64/python2.6/site-packages/mercurial/dispatch.py", line 45, in _runcatch
    return _dispatch(ui, args)
  File "/usr/lib64/python2.6/site-packages/mercurial/dispatch.py", line 299, in _dispatch
    cmd, func, args, options, cmdoptions = _parse(lui, args)
  File "/usr/lib64/python2.6/site-packages/mercurial/dispatch.py", line 187, in _parse
    args = fancyopts.fancyopts(args, c, cmdoptions)
  File "/usr/lib64/python2.6/site-packages/mercurial/fancyopts.py", line 29, in fancyopts
    for short, name, default, comment in options:
ValueError: too many values to unpack
make: *** [touch] Error 1

I think upgrading Mercurial should fix this issue.