[UtherII]

The concept of safety is pretty different in a kernel and in a programming language. The kernel can be attacked directly with malicious calls, while it's the program created by the rust compiler that can be attacked (unless you envision Rust as a sandboxing technology, what it is absolutely not).

The safety in a programming language is mostly protecting the programmer against itself. The probability for a programmer to write this kind of code by mistake is close to zero, as opposed to UB in C or C++ that are pretty common. To make a vulnerable program with this kind of issue, the programmer would have to make them on purpose, what is unlikely unless for this kind of joke repository.