error[E0507]: cannot move out of `x.0`, as `x` is a captured variable in an `Fn` closure
  --> $DIR/issue-52663-span-decl-captured-variable.rs:8:26
   |
LL |        let x = (vec![22], vec![44]);
   |            -   -------------------- move occurs because `x.0` has type `Vec<i32>`, which does not implement the `Copy` trait
   |            |
   |            captured outer variable
LL |        expect_fn(|| drop(x.0));
   |                  --      ^^^ `x.0` is moved here
   |                  |
   |                  captured by this `Fn` closure
   |
help: `Fn` and `FnMut` closures require captured values to be able to be consumed multiple times, but an `FnOnce` consume them only once
  --> $DIR/issue-52663-span-decl-captured-variable.rs:1:33
   |
LL | fn expect_fn<F>(f: F) where F : Fn() {
   |                                 ^^^^
help: consider cloning the value if the performance cost is acceptable
   |
LL |        expect_fn(|| drop(x.0.clone()));
   |                             ++++++++

error: aborting due to 1 previous error

For more information about this error, try `rustc --explain E0507`.