One thing that was not addressed in the post is the option of using a GC library in Rust. I'm not a Rust expert, but to me, it seems like this makes it quite fe

One thing that was not addressed in the post is the option of using a GC library in Rust. I'm not a Rust expert, but to me, it seems like this makes it quite feasible to quickly port a compiler. They could wrap most complex data structures in GC and optimize them as time goes by. That being said, I'd assume that the library's GC would be slower than Go, so perhaps that's a deal-breaker.