** Unknown exception encountered with possibly-broken third-party extension onsub
** which supports versions unknown of Mercurial.
** Please disable onsub and try your action again.
** If that fixes the bug please report it to the extension author.
** Python 2.7.3 (default, Sep 26 2012, 21:51:14) [GCC 4.7.2]
** Mercurial Distributed SCM (version 2.3)
** Extensions loaded: pager, graphlog, color, extdiff, purge, transplant, rebase, mq, onsub, felog
Traceback (most recent call last):
  File "/home/lukpater/bin/hg/mercurial-2.3/hg", line 38, in <module>
    mercurial.dispatch.run()
  File "/home/lukpater/bin/hg/mercurial-2.3/mercurial/dispatch.py", line 28, in run
    sys.exit((dispatch(request(sys.argv[1:])) or 0) & 255)
  File "/home/lukpater/bin/hg/mercurial-2.3/mercurial/dispatch.py", line 65, in dispatch
    return _runcatch(req)
  File "/home/lukpater/bin/hg/mercurial-2.3/mercurial/dispatch.py", line 88, in _runcatch
    return _dispatch(req)
  File "/home/lukpater/bin/hg/mercurial-2.3/mercurial/dispatch.py", line 740, in _dispatch
    cmdpats, cmdoptions)
  File "/home/lukpater/bin/hg/mercurial-2.3/mercurial/dispatch.py", line 514, in runcommand
    ret = _runcommand(ui, options, cmd, d)
  File "/home/lukpater/bin/hg/mercurial-2.3/mercurial/extensions.py", line 189, in wrap
    return wrapper(origfn, *args, **kwargs)
  File "/home/lukpater/bin/hg/mercurial-2.3/hgext/color.py", line 364, in colorcmd
    return orig(ui_, opts, cmd, cmdfunc)
  File "/home/lukpater/bin/hg/mercurial-2.3/mercurial/extensions.py", line 189, in wrap
    return wrapper(origfn, *args, **kwargs)
  File "/home/lukpater/bin/hg/mercurial-2.3/hgext/pager.py", line 130, in pagecmd
    return orig(ui, options, cmd, cmdfunc)
  File "/home/lukpater/bin/hg/mercurial-2.3/mercurial/dispatch.py", line 830, in _runcommand
    return checkargs()
  File "/home/lukpater/bin/hg/mercurial-2.3/mercurial/dispatch.py", line 801, in checkargs
    return cmdfunc()
  File "/home/lukpater/bin/hg/mercurial-2.3/mercurial/dispatch.py", line 737, in <lambda>
    d = lambda: util.checksignature(func)(ui, *args, **cmdoptions)
  File "/home/lukpater/bin/hg/mercurial-2.3/mercurial/util.py", line 472, in check
    return func(*args, **kwargs)
  File "/home/lukpater/bin/hg/mercurial-2.3/mercurial/extensions.py", line 144, in wrap
    util.checksignature(origfn), *args, **kwargs)
  File "/home/lukpater/bin/hg/mercurial-2.3/mercurial/util.py", line 472, in check
    return func(*args, **kwargs)
  File "/home/lukpater/bin/hg/mercurial-2.3/hgext/mq.py", line 3528, in mqcommand
    return orig(ui, repo, *args, **kwargs)
  File "/home/lukpater/bin/hg/mercurial-2.3/mercurial/util.py", line 472, in check
    return func(*args, **kwargs)
  File "/home/lukpater/dos/FSH-10247/dist-2.8.2/fecru-2.8.2/python/hg/hgfelog/hgfelog.py", line 95, in felog
    felognode(ui, repo, repo[r], **opts)
  File "/home/lukpater/dos/FSH-10247/dist-2.8.2/fecru-2.8.2/python/hg/hgfelog/hgfelog.py", line 121, in felognode
    diffParent(ui, repo, ctx, commitState, f, opts.get('patch'), opts.get('converted'), opts.get('merges'), opts.get('changesets'))
  File "/home/lukpater/dos/FSH-10247/dist-2.8.2/fecru-2.8.2/python/hg/hgfelog/hgfelog.py", line 136, in diffParent
    processPath(ui, repo, ctx, commitState, format, diffs, svnConversion, f)
  File "/home/lukpater/dos/FSH-10247/dist-2.8.2/fecru-2.8.2/python/hg/hgfelog/hgfelog.py", line 141, in processPath
    state = pathstate(repo, ctx, commitState, svnConversion, f)
  File "/home/lukpater/dos/FSH-10247/dist-2.8.2/fecru-2.8.2/python/hg/hgfelog/hgfelog.py", line 274, in __init__
    self._parents = getDeletedFileParents(ctx, path)
  File "/home/lukpater/dos/FSH-10247/dist-2.8.2/fecru-2.8.2/python/hg/hgfelog/hgfelog.py", line 265, in getDeletedFileParents
    ancestor0 = parents[0].ancestor(parents[1])
TypeError: ancestor() takes exactly 3 arguments (2 given)

~/bin/hg/mercurial-2.3/hg --config extensions.felog=/home/.../dist-2.8.2/fecru-2.8.2/python/hg/hgfelog/hgfelog.py --config ui.verbose=false felog default -p -m