rust/src/test/ui/async-await/async-borrowck-escaping-block-error.stderr

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error[E0373]: closure may outlive the current function, but it borrows `x`, which is owned by the current function
--> $DIR/async-borrowck-escaping-block-error.rs:6:20
|
LL | Box::new(async { x } )
| ^^-^^
| | |
| | `x` is borrowed here
| may outlive borrowed value `x`
|
note: generator is returned here
--> $DIR/async-borrowck-escaping-block-error.rs:4:13
|
LL | fn foo() -> Box<impl std::future::Future<Output = u32>> {
| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
help: to force the async block to take ownership of `x` (and any other referenced variables), use the `move` keyword
|
LL | Box::new(async move { x } )
| ^^^^^^^^^^
error: aborting due to previous error
For more information about this error, try `rustc --explain E0373`.