| error[E0308]: mismatched types |
| --> $DIR/suggest-box.rs:4:47 |
| | |
| LL | let _x: Box<dyn Fn() -> Result<(), ()>> = || { |
| | _____________-------------------------------___^ |
| | | | |
| | | expected due to this |
| LL | | Err(())?; |
| LL | | Ok(()) |
| LL | | }; |
| | |_____^ expected struct `std::boxed::Box`, found closure |
| | |
| = note: expected struct `std::boxed::Box<dyn std::ops::Fn() -> std::result::Result<(), ()>>` |
| found closure `[closure@$DIR/suggest-box.rs:4:47: 7:6]` |
| = 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 |
| help: store this in the heap by calling `Box::new` |
| | |
| LL | let _x: Box<dyn Fn() -> Result<(), ()>> = Box::new(|| { |
| LL | Err(())?; |
| LL | Ok(()) |
| LL | }); |
| | |
| |
| error: aborting due to previous error |
| |
| For more information about this error, try `rustc --explain E0308`. |
