I'm personally not a fan of "rewrite the world in Rust" mentality, but that being said, if one is planning to port a project to a new language or platform, mechanical translation is a poor means of doing so. Spend the time planning better architecture and designing a better software system, and find a way to replace it piece by piece. Don't build a castle in the sky, because it will never reach the ground. If you've decided to use Rust for this system, that's fine. But, write Rust. Don't try to back-port C into Rust.
I think a far better and more mature process is to update C to modern C and use a model checker such as CBMC to verify memory, resource, and integer math safety. One gets the same safety as a gradual Rust rewrite, but the code base, knowledge base, and developers can be maintained.
I think a far better and more mature process is to update C to modern C and use a model checker such as CBMC to verify memory, resource, and integer math safety. One gets the same safety as a gradual Rust rewrite, but the code base, knowledge base, and developers can be maintained.