hello_world with cargo.

rust/guide/.gitignore

target

rust/guide/Cargo.toml

[package]
name = "hello_world"
version = "0.1.0"
authors = ["lu@papill0n.org"]
[[bin]]
name = "hello_world"

rust/guide/src/hello_world.rs

fn main() {
	println!("Hello, World!")
}