| 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`. |