:: Synchronizing package databases...
 staging is up to date
 testing is up to date
 core is up to date
 extra is up to date
 community-staging is up to date
 community-testing is up to date
 community is up to date
:: Starting full system upgrade...
 there is nothing to do
==> Building in chroot for [staging] (x86_64)...
==> Creating clean working copy [erich]...done
==> Making package: ogre 1.10.5-1 (Wed Jun 28 16:06:52 CEST 2017)
==> Retrieving sources...
  -> Cloning ogre hg repo...
** Unknown exception encountered with possibly-broken third-party 
extension qimportbz
** which supports versions unknown of Mercurial.
** Please disable qimportbz and try your action again.
** If that fixes the bug please report it to 
https://bugzilla.mozilla.org/enter_bug.cgi?product=Developer%20Services&component=Mercurial%3A%20qimportbz
** Python 2.7.13 (default, Feb 11 2017, 12:22:40) [GCC 6.3.1 20170109]
** Mercurial Distributed SCM (version 4.2.1)
** Extensions loaded: color, rebase, histedit, strip, mq, reviewboard, 
bzexport, bzpost, firefoxtree, bundleclone, push-to-try, mqext, 
qimportbz
Traceback (most recent call last):
  File "/usr/bin/hg", line 45, in <module>
    mercurial.dispatch.run()
  File "/usr/lib/python2.7/site-packages/mercurial/dispatch.py", line 
83, in run
    status = (dispatch(req) or 0) & 255
  File "/usr/lib/python2.7/site-packages/mercurial/dispatch.py", line 
164, in dispatch
    ret = _runcatch(req)
  File "/usr/lib/python2.7/site-packages/mercurial/dispatch.py", line 
295, in _runcatch
    return _callcatch(ui, _runcatchfunc)
  File "/usr/lib/python2.7/site-packages/mercurial/dispatch.py", line 
303, in _callcatch
    return scmutil.callcatch(ui, func)
  File "/usr/lib/python2.7/site-packages/mercurial/scmutil.py", line 
146, in callcatch
    return func()
  File "/usr/lib/python2.7/site-packages/mercurial/dispatch.py", line 
285, in _runcatchfunc
    return _dispatch(req)
  File "/usr/lib/python2.7/site-packages/mercurial/dispatch.py", line 
760, in _dispatch
    extensions.loadall(lui)
  File "/usr/lib/python2.7/site-packages/mercurial/extensions.py", line 
190, in loadall
    _runextsetup(name, ui)
  File "/usr/lib/python2.7/site-packages/mercurial/extensions.py", line 
158, in _runextsetup
    extsetup(ui)
  File "/usr/lib/python2.7/site-packages/hgext/mq.py", line 3606, in 
extsetup
    dotable(getattr(extmodule, 'cmdtable', {}))
  File "/usr/lib/python2.7/site-packages/hgext/mq.py", line 3597, in 
dotable
    if func.norepo:
AttributeError: 'function' object has no attribute 'norepo'
==> ERROR: Failure while downloading ogre hg repo
    Aborting...
==> ERROR: Could not download sources.