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• 07:44, 19 November 2025 PC talk contribs created page Inside Rust’s no main World: How Binaries Run Without std (Created page with "500px Most Rust developers think every Rust program starts with this: fn main() { println!("Hello, world!"); } But deep down in the guts of embedded systems, kernels, and bootloaders, there’s no println!, no heap, and not even a main function. That’s the #![no_main] world — where Rust becomes bare-metal, and you’re on your own. This isn’t a theoretical curiosity. This is the world of firmware, operating systems, and WASM run...")