Rust Build Times Purpose Guide agents through diagnosing and improving Rust compilation speed: for build profiling, for caching, the Cranelift codegen backend for faster dev builds, workspace crate splitting, LTO configuration trade-offs, and fast linkers (mold/lld). Triggers - "My Rust project takes too long to compile" - "How do I profile which crates are slow to build?" - "How do I set up sccache for Rust?" - "What is the Cranelift backend and how does it help?" - "Should I use thin LTO or fat LTO?" - "How do I use the mold linker with Rust?" Workflow 1. Diagnose with cargo-timings 2. scca…