Rust's derive often implies inline

Rust’s default `#[derive(...)]` behavior often adds `#[inline]` to generated trait implementations, which is usually beneficial for small, trivial methods like `Debug` and `Clone`. But in deeply nested or field-heavy types, especially error hierarchies that are frequently formatted in logs, aggressive inlining can materially increase binary size and compile-time code bloat—this article cites a ~160KB reduction after preventing a `Debug` impl from being inlined. For CIOs and technology leaders, the implication is that low-level language defaults can have real production cost impacts in performance-sensitive or footprint-sensitive services, so IT teams should treat binary size and inlining behavior as part of engineering governance, not just a compiler detail.