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error: future cannot be sent between threads safely
--> $DIR/issue-70935-complex-spans.rs:18:23
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LL | fn foo(x: NotSync) -> impl Future + Send {
| ^^^^^^^^^^^^^^^^^^ future created by async block is not `Send`
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= help: within `NotSync`, the trait `Sync` is not implemented for `*mut ()`
note: future is not `Send` as this value is used across an await
--> $DIR/issue-70935-complex-spans.rs:24:12
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LL | baz(|| async {
| _____________-
LL | | foo(x.clone());
LL | | }).await;
| | - ^^^^^- the value is later dropped here
| | | |
| |_________| await occurs here, with the value maybe used later
| has type `[closure@$DIR/issue-70935-complex-spans.rs:22:13: 22:15]` which is not `Send`
error: aborting due to previous error
|
