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error: coroutine cannot be sent between threads safely
--> $DIR/drop-yield-twice.rs:7:5
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LL | assert_send(|| {
| ^^^^^^^^^^^ coroutine is not `Send`
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= help: within `{coroutine@$DIR/drop-yield-twice.rs:7:17: 7:19}`, the trait `Send` is not implemented for `Foo`
note: coroutine is not `Send` as this value is used across a yield
--> $DIR/drop-yield-twice.rs:9:9
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LL | let guard = Foo(42);
| ----- has type `Foo` which is not `Send`
LL | yield;
| ^^^^^ yield occurs here, with `guard` maybe used later
note: required by a bound in `assert_send`
--> $DIR/drop-yield-twice.rs:15:19
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LL | fn assert_send<T: Send>(_: T) {}
| ^^^^ required by this bound in `assert_send`
error: aborting due to 1 previous error
|
