Distribution is sarge.
Building the build environment
 -> running debootstrap
/usr/sbin/debootstrap
I: Retrieving Release
E: Invalid Release file, no entry for main/binary-amd64/Packages
pbuilder: debootstrap failed
 -> Aborting with an error
 -> cleaning the build env 
    -> removing directory /var/cache/pbuilder/build//19116 and its subdirectories