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

A GitHub project called Headstart has been developed to speed up the process of building and checking Rust projects. The project uses a feature called 'metadata emission' which allows for the early emission of build metadata, resulting in faster build times. This is achieved by emitting the metadata as soon as possible, rather than waiting until the entire build process is complete. As a result, users can expect build and check times to be up to twice as fast. The project is open-source and available on GitHub.