Comment 34 for bug 2036730

Following @Paride's suggestion of making this a documentation issue, I added a section to the wiki page explaining how to run cross-architecture autopkgtest:
https://wiki.ubuntu.com/ProposedMigration#How_to_run_cross-architecture_autopkgtest_locally_using_QEMU

~~Closing with "Won't fix" as we don't have a proper path to a clean solution yet.~~ Feel free to change or re-open if needed.

EDIT: "Won't fix" cannot be selected for whatever reason in LP.