title: How do I tell Cargo to run files from a directory other than "src"?
body: <p>I have a front-end project that has a lot of stuff in <code>src</code> folder, and I have the opportunity to also use Rust on the server side. All my Rust server files are in the <code>server</code> folder; how can I tell Cargo to run <code>./server/app.rs</code>?</p>