Mercurial bug cloning xen repo

[Mike Wray]

I got the following error when trying to clone the xen unstable repo.
This was using mercurial from a fresh pull today (see below for info)
and python 2.4.1.

mjw at wray-m-3 1022> hg clone http://xenbits.xensource.com/xen-unstable.hg
requesting all changes
adding changesets
adding manifests
adding file changes
added 6917 changesets with 0 changes to 0 files
** unknown exception encountered, details follow
** report bug details to mercurial at selenic.com
Traceback (most recent call last):
   File "/home/mjw/bin/hg", line 13, in ?
     commands.run()
   File "/home/mjw/lib/python/mercurial/commands.py", line 2005, in run
     sys.exit(dispatch(sys.argv[1:]))
   File "/home/mjw/lib/python/mercurial/commands.py", line 2145, in dispatch
     return d()
   File "/home/mjw/lib/python/mercurial/commands.py", line 2132, in <lambda>
     d = lambda: func(u, *args, **cmdoptions)
   File "/home/mjw/lib/python/mercurial/commands.py", line 668, in clone
     update(ui, repo)
   File "/home/mjw/lib/python/mercurial/commands.py", line 1741, in update
     return repo.update(node, allow=merge, force=clean)
   File "/home/mjw/lib/python/mercurial/localrepo.py", line 1028, in update
     pa = self.changelog.ancestor(p1, p2)
   File "/home/mjw/lib/python/mercurial/revlog.py", line 427, in ancestor
     dist[n] = max(dist[p1], dist[p2]) + 1
KeyError: 'cfBc2a2a12bd6ver.\n\x00\x00'

mjw at wray-m-3 1031> hg heads
changeset:   1279:8ab1c07d4e0b
tag:         tip
user:        eric at localhost.localdomain
date:        Tue Sep 20 02:24:37 2005 -0700
summary:     Add checks for programs which are required for the test suite to run.

Regards,

Mike Wray