Why doesn’t this category of bugs exist for Rust programs? Simply because you cannot write a program that contains a null-pointer error. Hate to be that guy,

Why doesn’t this category of bugs exist for Rust programs? Simply because you cannot write a program that contains a null-pointer error. Hate to be that guy, but this is strictly not true. Observe: $ nl -ba nulltmp.rs 1 use std::ptr; 2 3 fn main() { 4 unsafe { 5 let p = ptr::null::<i64>(); 6 println!("{}", *p); 7 } 8 } $ rustc nulltmp.rs $ ./nulltmp Segmentation fault (core dumped) Raw pointers exist. Unsafe Rust exists. Any large enough Rust project will end up with some unsafe code. That doesn't mean that the things OP is doing aren't great—they are—but merely that, when considering tools to be used for real-world Rust, people shouldn't assume that their tools will only be used in a shiny rainbow unicorn world of Safe Rust.