The Rust compiler remains unperturbed by the antics of the LLM The software engine underpinning GitHub Copilot and a growing number of Microsoft products is now written entirely in Rust, with AI agents doing most of the porting work. The migration cost about $120,000 in AI token usage plus about three weeks of a developer time. However,managers also had to grapple with a few dozen regressions in the resulting code, pointing to AIs ongoing challenges in understanding Rust. The effort updated...