I bet you that the interesting thing is lxd rather than armhf. Try with a container build like this:
RELEASE=focal autopkgtest-build-lxd images:ubuntu/eoan/amd64
or if focal images become available before then
autopkgtest-build-lxd images:ubuntu/focal/amd64
I bet you that the interesting thing is lxd rather than armhf. Try with a container build like this:
RELEASE=focal autopkgtest- build-lxd images: ubuntu/ eoan/amd64
or if focal images become available before then
autopkgtest- build-lxd images: ubuntu/ focal/amd64