1 error[E0382]: use of moved value: `blk`
2 --> $DIR/once-cant-call-twice-on-heap.rs:19:5
6 LL | blk(); //~ ERROR use of moved value
7 | ^^^ value used here after move
9 = note: move occurs because `blk` has type `F`, which does not implement the `Copy` trait
11 error: aborting due to previous error
13 For more information about this error, try `rustc --explain E0382`.