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![]() ``` error[E0382]: use of moved value: `blk` --> $DIR/once-cant-call-twice-on-heap.rs:8:5 | LL | fn foo<F:FnOnce()>(blk: F) { | --- move occurs because `blk` has type `F`, which does not implement the `Copy` trait LL | blk(); | ----- `blk` moved due to this call LL | blk(); | ^^^ value used here after move | note: `FnOnce` closures can only be called once --> $DIR/once-cant-call-twice-on-heap.rs:6:10 | LL | fn foo<F:FnOnce()>(blk: F) { | ^^^^^^^^ `F` is made to be an `FnOnce` closure here LL | blk(); | ----- this value implements `FnOnce`, which causes it to be moved when called ``` |
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