Emitting metadata early makes building/checking Rust up to twice as fast

Headstart emits Rust metadata early, reportedly making builds and checks up to twice as fast.

The GitHub project headstart (PowderworksCode/headstart) emits Rust compiler metadata earlier so dependent crates can start building or type-checking sooner. The author reports build and check times up to twice as fast. The Hacker News post had 21 points and one comment. This is a compiler-performance technique, not a cybersecurity or AI security issue.