Subversion password using capistrano on textdrive



I am trying to set up capistrano for use on textdrive, and followed
the instructions posted at this very helpful site:

My problem is that when I try to execute rake remote:exec
ACTION=cold_deploy the execution getss stuck when it tries to access
my subversion repository.

** [out ::] Authentication realm:
** [out ::] Password for ‘bnevile’:
** [out ::] subversion is asking for a password
** [out ::] Authentication realm:
** [out ::] Username:

Anybody have any idea how I can avoid this? Thanks in advance.