$ cargo run Compiling rectangles v0.1.0 (file:///projects/rectangles) Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.61s Running `target/debug/rectangles` [src/main.rs:10:16] 30 * scale = 60 [src/main.rs:14:5] &rect1 = Rectangle { width: 60, height: 50, }