as-ref-2.stderr

error[E0382]: use of moved value: `foo`
  --> $DIR/as-ref-2.rs:12:14
   |
LL |     let foo = Some(Struct);
   |         --- move occurs because `foo` has type `Option<Struct>`, which does not implement the `Copy` trait
LL |     let _x: Option<Struct> = foo.map(|s| bar(&s));
   |                                  ---------------- `foo` moved due to this method call
LL |     let _y = foo;
   |              ^^^ value used here after move
   |
note: this function takes ownership of the receiver `self`, which moves `foo`
  --> $SRC_DIR/core/src/option.rs:LL:COL
   |
LL |     pub fn map<U, F: FnOnce(T) -> U>(self, f: F) -> Option<U> {
   |                                      ^^^^
help: consider calling `.as_ref()` to borrow the type's contents
   |
LL |     let _x: Option<Struct> = foo.as_ref().map(|s| bar(&s));
   |                                  ^^^^^^^^^

error: aborting due to previous error

For more information about this error, try `rustc --explain E0382`.