$ cargo check Checking hello v0.1.0 (file:///projects/hello) error[E0382]: use of moved value: `receiver` --> src/lib.rs:27:42 | 22 | let (sender, receiver) = mpsc::channel(); | -------- move occurs because `receiver` has type `std::sync::mpsc::Receiver`, which does not implement the `Copy` trait ... 27 | workers.push(Worker::new(id, receiver)); | ^^^^^^^^ value moved here, in previous iteration of loop For more information about this error, try `rustc --explain E0382`. error: could not compile `hello` due to previous error