error[E0509]: cannot move out of type `S`, which implements the `Drop` trait
  --> $DIR/overlapping_spans.rs:21:14
   |
LL |         S {f:_s} => {} //~ ERROR cannot move out
   |              ^^ cannot move out of here

error: aborting due to previous error

For more information about this error, try `rustc --explain E0509`.