Enhancing #[must_use] with Inheritance Capability in Rust

A new proposal on Rust Internals suggests enhancing the #[must_use] attribute by allowing it to inherit the reason for its use. This change aims to improve the attribute's expressiveness, enabling developers to convey more specific usage expectations in their APIs. The proposal outlines a method to add this functionality without altering the attribute's core behavior, potentially leading to more robust error handling and clearer API contracts in Rust projects.