| error[E0507]: cannot move out of `*v`, as `v` is a captured variable in an `FnMut` closure |
| --> $DIR/issue-4335.rs:6:20 |
| | |
| LL | fn f<'r, T>(v: &'r T) -> Box<dyn FnMut() -> T + 'r> { |
| | - ----- move occurs because `*v` has type `T`, which does not implement the `Copy` trait |
| | | |
| | captured outer variable |
| LL | id(Box::new(|| *v)) |
| | -- ^^ `*v` is moved here |
| | | |
| | captured by this `FnMut` closure |
| | |
| = help: `Fn` and `FnMut` closures require captured values to be able to be consumed multiple times, but `FnOnce` closures may consume them only once |
| help: if `T` implemented `Clone`, you could clone the value |
| --> $DIR/issue-4335.rs:5:10 |
| | |
| LL | fn f<'r, T>(v: &'r T) -> Box<dyn FnMut() -> T + 'r> { |
| | ^ consider constraining this type parameter with `Clone` |
| LL | id(Box::new(|| *v)) |
| | -- you could clone this value |
| |
| error: aborting due to 1 previous error |
| |
| For more information about this error, try `rustc --explain E0507`. |
