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1 error[E0277]: `Rc<()>` cannot be sent between threads safely
2   --> $DIR/no-send-res-ports.rs:25:5
3    |
4 LL |       thread::spawn(move|| {
5    |  _____^^^^^^^^^^^^^_-
6    | |     |
7    | |     `Rc<()>` cannot be sent between threads safely
8 LL | |
9 LL | |         let y = x;
10 LL | |         println!("{:?}", y);
11 LL | |     });
12    | |_____- within this `[closure@$DIR/no-send-res-ports.rs:25:19: 29:6]`
13    | 
14   ::: $SRC_DIR/std/src/thread/mod.rs:LL:COL
15    |
16 LL |       F: Send + 'static,
17    |          ---- required by this bound in `spawn`
18    |
19    = help: within `[closure@$DIR/no-send-res-ports.rs:25:19: 29:6]`, the trait `Send` is not implemented for `Rc<()>`
20    = note: required because it appears within the type `Port<()>`
21    = note: required because it appears within the type `Foo`
22    = note: required because it appears within the type `[closure@$DIR/no-send-res-ports.rs:25:19: 29:6]`
23
24 error: aborting due to previous error
25
26 For more information about this error, try `rustc --explain E0277`.