unknown exception encountered (ValueError raised from httprepo.py)

[Vincent Delecroix]

Dear mercurial,

I'm in trouble with a ValueError of mercurial that I'm not able to
interpret correctly. I'm a developer for the Sage software
(http://sagemath.org) and we're using mercurial version 1.3.1 as a
version manager. As asked in the backtrace of the error, I'm sending
an e-mail.

Sincerly,
Vincent

part of backtrace
---------------------
pushing to http://combinat.sagemath.org/patches/
searching for changes
4 changesets found
** unknown exception encountered, details follow
** report bug details to http://mercurial.selenic.com/bts/
** or mercurial at selenic.com
** Mercurial Distributed SCM (version 1.3.1)
** Extensions loaded: mq, extdiff
Traceback (most recent call last):
  File "/opt/sage-4.6/local/bin/hg", line 27, in <module>
    mercurial.dispatch.run()
  ...
  File "/opt/sage-4.6/local/lib/python/mercurial/localrepo.py", line
1616, in push_unbundle
    return remote.unbundle(cg, remote_heads, 'push')
  File "/opt/sage-4.6/local/lib/python/mercurial/httprepo.py", line
220, in unbundle
    resp_code, output = resp.split('\n', 1)
ValueError: need more than 1 value to unpack


.hgrc file in home
---------------------
[ui]
username = Vincent Delecroix <20100.delecroix at gmail.com>
verbose = true

[auth]
combinat_patches.prefix = http://combinat.sagemath.org/patches/
combinat_patches.username = vdelecroix
combinat_patches.password = xxxx

[extensions]
hgext.mq =
extdiff =

[alias]
qstatus = status --rev -2:.

[hooks]
pre-qrefresh = (echo "Are you sure you want to refresh the following
changes:"; sage -hg status; echo -n "into the patch: "; sage -hg qtop;
read -p "(y/n)" answer; test "$answer" = "y"  )

[extdiff]
cmd.interdiff = hg-interdiff


hgrc file in the queue repository
---------------------------------------
[paths]
default = http://combinat.sagemath.org/patches/