cowbuilder uses LD_PRELOAD'ed library that it won't have a chance of working on a different architecture (well, if you implement enough it probably works).
> On my Testing amd64 install, the following call fails: > > ========================================================= > > # sudo HOME=$HOME eatmydata cowbuilder --create --mirror > http://10.1.0.3:3142/ftp.uk.debian.org/debian --basepath > /var/cache/pbuilder/jessie-i386-test/base.cow --distribution jessie > --debootstrapopts --arch --debootstrapopts i386 -- To UNSUBSCRIBE, email to debian-bugs-dist-requ...@lists.debian.org with a subject of "unsubscribe". Trouble? Contact listmas...@lists.debian.org