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error[E0308]: mismatched types
--> $DIR/issue-111011.rs:10:23
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LL | foo(async move || {});
| ^^ expected `Box<_>`, found `async` closure body
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= note: expected struct `Box<_>`
found `async` closure body `[async closure body@$DIR/issue-111011.rs:10:23: 10:25]`
= note: for more on the distinction between the stack and the heap, read https://doc.rust-lang.org/book/ch15-01-box.html, https://doc.rust-lang.org/rust-by-example/std/box.html, and https://doc.rust-lang.org/std/boxed/index.html
error[E0308]: mismatched types
--> $DIR/issue-111011.rs:11:9
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LL | bar(async move || {});
| --- ^^^^^^^^^^^^^^^^ expected `Box<dyn FnOnce() -> _>`, found closure
| |
| arguments to this function are incorrect
|
= note: expected struct `Box<(dyn FnOnce() -> _ + 'static)>`
found closure `{closure@$DIR/issue-111011.rs:11:9: 11:22}`
= note: for more on the distinction between the stack and the heap, read https://doc.rust-lang.org/book/ch15-01-box.html, https://doc.rust-lang.org/rust-by-example/std/box.html, and https://doc.rust-lang.org/std/boxed/index.html
note: function defined here
--> $DIR/issue-111011.rs:7:4
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LL | fn bar<X>(x: Box<dyn FnOnce() -> X>) {}
| ^^^ -------------------------
help: store this in the heap by calling `Box::new`
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LL | bar(Box::new(async move || {}));
| +++++++++ +
error: aborting due to 2 previous errors
For more information about this error, try `rustc --explain E0308`.
|
