[ActorNightly]

The issue is that any Rust code is going to be targeted at performance processing (since otherwise you would write it in a higher level language). And for performance processing, you need to use unsafe (because at some point, the most efficient thing is getting or setting data at a certain memory address without anything extra). Look at any big Rust project, like Amazon Firecracker, and its littered with unsafes.

[iopq]

You really don't, I worked on a Rust project:

https://github.com/ujh/iomrascalai

it doesn't need unsafe code despite being performance-optimized