1 error[E0525]: expected a closure that implements the `Fn` trait, but this closure only implements `FnOnce`
2 --> $DIR/closure-wrong-kind.rs:10:19
4 LL | let closure = |_| foo(x);
7 | | closure is `FnOnce` because it moves the variable `x` out of its environment
8 | this closure implements `FnOnce`, not `Fn`
10 | --- the requirement to implement `Fn` derives from here
12 error: aborting due to previous error
14 For more information about this error, try `rustc --explain E0525`.