rust/tests/ui/suggestions/option-content-move2.stderr
Esteban Küber ad9a5a5f9f Suggest cloning captured binding in move closure
```
error[E0507]: cannot move out of `bar`, a captured variable in an `FnMut` closure
  --> $DIR/borrowck-move-by-capture.rs:9:29
   |
LL |     let bar: Box<_> = Box::new(3);
   |         --- captured outer variable
LL |     let _g = to_fn_mut(|| {
   |                        -- captured by this `FnMut` closure
LL |         let _h = to_fn_once(move || -> isize { *bar });
   |                             ^^^^^^^^^^^^^^^^   ----
   |                             |                  |
   |                             |                  variable moved due to use in closure
   |                             |                  move occurs because `bar` has type `Box<isize>`, which does not implement the `Copy` trait
   |                             `bar` is moved here
   |
help: clone the value before moving it into the closure
   |
LL ~         let value = bar.clone();
LL ~         let _h = to_fn_once(move || -> isize { value });
   |
```
2024-04-24 22:21:16 +00:00

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error[E0507]: cannot move out of `var`, a captured variable in an `FnMut` closure
--> $DIR/option-content-move2.rs:11:9
|
LL | let mut var = None;
| ------- captured outer variable
LL | func(|| {
| -- captured by this `FnMut` closure
LL | // Shouldn't suggest `move ||.as_ref()` here
LL | move || {
| ^^^^^^^ `var` is moved here
LL |
LL | var = Some(NotCopyable);
| ---
| |
| variable moved due to use in closure
| move occurs because `var` has type `Option<NotCopyable>`, which does not implement the `Copy` trait
error[E0507]: cannot move out of `var`, a captured variable in an `FnMut` closure
--> $DIR/option-content-move2.rs:21:9
|
LL | let mut var = None;
| ------- captured outer variable
LL | func(|| {
| -- captured by this `FnMut` closure
LL | // Shouldn't suggest `move ||.as_ref()` nor to `clone()` here
LL | move || {
| ^^^^^^^ `var` is moved here
LL |
LL | var = Some(NotCopyableButCloneable);
| ---
| |
| variable moved due to use in closure
| move occurs because `var` has type `Option<NotCopyableButCloneable>`, which does not implement the `Copy` trait
error: aborting due to 2 previous errors
For more information about this error, try `rustc --explain E0507`.