> so you want the error type to be !. For others having trouble to grok that sentence, ! is the never type. Should never happen. https://doc.rust-lang.org/std/

> so you want the error type to be !. For others having trouble to grok that sentence, ! is the never type. Should never happen. https://doc.rust-lang.org/std/primitive.never.html https://doc.rust-lang.org/std/primitive.never.html