Currently samba cannot transition to testing, as cups doesn't build on mips* anymore. We first thought that the issue is that cups is using PIE as build option, but even after changing cups to not do that, and making binutils to give a specific error message for using PIE instead of building corrupted binaries (thanks, Matthias for the fast change), it still continues to FTBFS. No answer from the porters yet though. And no idea what to do, at least none that I know of.