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error[E0277]: the trait bound `std::cell::Cell<i32>: std::marker::Sync` is not satisfied
--> $DIR/not-send-sync.rs:26:5
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26 | assert_send(|| {
| ^^^^^^^^^^^ `std::cell::Cell<i32>` cannot be shared between threads safely
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= help: the trait `std::marker::Sync` is not implemented for `std::cell::Cell<i32>`
= note: required because of the requirements on the impl of `std::marker::Send` for `&std::cell::Cell<i32>`
= note: required because it appears within the type `[generator@$DIR/not-send-sync.rs:26:17: 30:6 a:&std::cell::Cell<i32> _]`
= note: required by `main::assert_send`
error[E0277]: the trait bound `std::cell::Cell<i32>: std::marker::Sync` is not satisfied in `[generator@$DIR/not-send-sync.rs:19:17: 23:6 (std::cell::Cell<i32>, ())]`
--> $DIR/not-send-sync.rs:19:5
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19 | assert_sync(|| {
| ^^^^^^^^^^^ `std::cell::Cell<i32>` cannot be shared between threads safely
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= help: within `[generator@$DIR/not-send-sync.rs:19:17: 23:6 (std::cell::Cell<i32>, ())]`, the trait `std::marker::Sync` is not implemented for `std::cell::Cell<i32>`
= note: required because it appears within the type `(std::cell::Cell<i32>, ())`
= note: required because it appears within the type `[generator@$DIR/not-send-sync.rs:19:17: 23:6 (std::cell::Cell<i32>, ())]`
= note: required by `main::assert_sync`
error: aborting due to 2 previous errors
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