$ cargo run Compiling rectangles v0.1.0 (file:///projects/rectangles) Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.41s Running `target/debug/rectangles` [ Rectangle { width: 3, height: 5, }, Rectangle { width: 7, height: 12, }, Rectangle { width: 10, height: 1, }, ]