What I did: hg clone http://some.domain.com/svn/project […] hg push
and I got the attached traceback.
Setting [hgsubversion] username = user password = passwd
didn’t change anything.
did the trick, and the push was successful.
hg subversion should prompt for these crendentials if not provided, or use them if they are provided in the conf file (in the [hgsubversion] section, as username and password values).
Or at least it should not traceback but explain how to put the credentials in the right place.