thread3.rs don't compile manually

[ArthurPERE]

Hello,

I have a problem, when I run rustlings for the thread3.rs, it works perfectely I do the exercice. But when I try to compile manually with rustc (version rustc 1.88.0 (6b00bc388 2025-06-23)), there is an error :

error[E0382]: use of moved value: `q`
  --> threads3.rs:32:19
   |
17 | fn send_tx(q: Queue, tx: mpsc::Sender<u32>) {
   |            - move occurs because `q` has type `Queue`, which does not implement the `Copy` trait
...
24 |     thread::spawn(move || {
   |                   ------- value moved into closure here
25 |         for val in q.first_half {
   |                    ------------ variable moved due to use in closure
...
32 |     thread::spawn(move || {
   |                   ^^^^^^^ value used here after move
33 |         for val in q.second_half {
   |                    ------------- use occurs due to use in closure

error: aborting due to 1 previous error

For more information about this error, try `rustc --explain E0382`.

I don't know why the file don't compile manually but compile with rustlings. The solution also don't compile, with the same error.

The command I am using, to compile manualy is rustc threads3.rs.

Regards,

[Nickiris]

I encountered the same issue. I resolved it by splitting the q's fields, moving first_half and second_half into separate variables to isolate their ownership.