Hi, I was looking into this and saw that this is failing on my x86 machine as well. On further inspection I saw the there has been a drop in support for lua5.2 in several lua packages (in lua-busted, lua-penlight, lua-mediator, lua-cliargs and lua-dkjson). After re-enabling these packages locally, I was able to see the autopkgtest pass for lua-system. If the plan is to drop support for lua5.2 then I guess the tests need to be updated.
Thanks, Pranav
