Design and Implementation of the Diagnostic Attribute Namespace in Rust

Learn about the newly stabilized `#[diagnostic]` attribute namespace in this 22-minute conference talk from RustLab. Explore how this tool allows crate authors to customize compiler error messages when enforcing domain-specific compile-time constraints, a feature that was stabilized in Rust 1.78. Gain insights into the process of designing, implementing, and stabilizing new language features in Rust, with detailed explanations of each development phase. Follow along as the speaker demonstrates practical approaches to contributing to the Rust compiler, making complex feature implementation more accessible to potential contributors.