Another real world example, and actually quite relevant to the use case of the original article. Tint and naga are both shader compilers, primarily used for compiling WGSL into SPIR-V, MSL, and HLSL so shaders can be used portably. Tint is in C++ and takes 113.6s for a clean compile on M1 Max. Naga, in Rust, is 17s. That includes serde and a bunch of the usual community crates (quote, syn, thiserror, petgraph).

Admittedly Tint is more mature and sophisticated, but both serve the function I need them for.