This is another discussion I noted from the LLVM Dev Meeting, although I was elsewhere during this BoF.
For Rust, I think this will mostly just be an issue of updating our various
src/ci containers with newer GCC/Clang builds, and maybe the Windows infrastructure will need to be updated too. We already build custom GCC on many targets to get newer toolchains while keeping ABI compatibility. I don’t think we’ll have to increase our ABI baseline for this (currently ~RHEL5-ish for Linux x86), but that’s something to be careful about too.
attn @alexcrichton, since you often deal with those CI images.