Portability would for sure be a great asset for Rust. But it's a new language compared to C. I also agree that having a clear spec is a must. But the author got

Portability would for sure be a great asset for Rust. But it's a new language compared to C. I also agree that having a clear spec is a must. But the author got lost, none of these languages have a clear sweet spot yet that would help them to define a clear spec.