rustc

Nicholas Nethercote has published a new installment of his recurring guide to improving the performance of the Rust compiler, rustc. The post walks through practical contributions from September 2026, profiling work, and the techniques that have yielded speedups. It continues his long-running series, which developers and Rust project contributors follow for guidance on how to start optimizing the compiler themselves.

RustChain, a blockchain built around the idea that old hardware should earn as much as new machines, selects its block producers with a simple modulo operation rather than proof-of-work hashing or proof-of-stake lotteries. Commenters note the design is deliberate: a hash-power race would let modern GPUs outpace a 2003 PowerBook, defeating the project's stated goal of hardware egalitarianism.