root@octobertop:/mnt# rm ubuntu/debootstrap/debootstrap.log
root@octobertop:/mnt# /usr/sbin/debootstrap --arch amd64 feisty /mnt/ubuntu file:/cdrom/ubuntu/
I: Validating Packages
I: Resolving dependencies of required packages...
I: Resolving dependencies of base packages...
I: Installing core packages...
W: Failure trying to run: chroot /mnt/ubuntu dpkg --force-depends --install
root@octobertop:/mnt# cat ubuntu/debootstrap/debootstrap.log
ar: /mnt/ubuntu/: File format not recognized

zcat: stdin: unexpected end of file
dpkg: parse error, in file `/var/lib/dpkg/status' near line 2 package `dpkg':
 error in Version string `': version string is empty
root@octobertop:/mnt#