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note: closure cannot be invoked more than once because it moves the variable `x` out of its environment
--> $DIR/issue-12127.rs:18:39
|
LL | let f = to_fn_once(move|| do_it(&*x));
| ^
= note: move occurs because `f` has type `[closure@$DIR/issue-12127.rs:18:24: 18:41 x:std::boxed::Box<isize>]`, which does not implement the `Copy` trait
error: aborting due to previous error
For more information about this error, try `rustc --explain E0382`.