mercurial server安装后clone连接错误

根据网上的方法，配置memcurial-server 
hg clone ssh://hg@ip/hgadmin后，报如下错误

remote: Traceback (most recent call last):
remote: File "/usr/share/mercurial-server/hg-ssh", line 76, in <module>
remote: dispatch.dispatch(['-R', repo, 'serve', '--stdio'])
remote: File "/usr/local/lib/python2.7/dist-packages/mercurial/dispatch.py", line 31, in dispatch
remote: if req.ferr:
remote: AttributeError: 'list' object has no attribute 'ferr'
abort: no suitable response from remote hg!

AttributeError: 'list' object has no attribute 'ferr'
没有这个属性,这是python吧,检查下代码