Moral of the story: using Rust will not automatically make your code bug proof. It can actually introduce bugs that are of totally new breed and hard to debug.
Instead of worrying about simple and very common classes of bugs that can be solved statically with the help of the compiler, you are free to worry about whatever other non-trivial bugs in your program are remaining.
You're obviously free to waste your own time if you'd like.
>> (…) it’s a rare case of a kernel memory access check bug that had no security implications.
My favourite type of kernel bug.