Zig is a completely different language than Rust. Memory safety is just one aspect. I personally find Rust to be very difficult to read and can never manage to be productive in it.
I should have been a bit more clear. I love memory safety. But I dislike a lot of other aspects specific to Rust. I would much prefer e.g. C with memory safety (somehow). So that is, for me, why not Rust. Rust is more more than just memory safety.
Perhaps you should look into Vale or Pony then, they have memory safety like Rust, also without a GC, but they use different mechanisms for it.
I built https://hackernewsalerts.com for that