$ cargo --version && cargo init hello && cd hello && cat ./src/main.rs && cargo build --release && du -h ./target/release/hello cargo 1.34.0 (6789d8a0a 2019-0

$ cargo --version && cargo init hello && cd hello && cat ./src/main.rs && cargo build --release && du -h ./target/release/hello cargo 1.34.0 (6789d8a0a 2019-04-01) Created binary (application) package fn main() { println!("Hello, world!"); } Compiling hello v0.1.0 (/tmp/foo/hello) Finished release [optimized] target(s) in 0.31s 1,6M ./target/release/hello Edit: $ strip target/release/hello && du -h ./target/release/hello 192K ./target/release/hello