Mistake about pointer conversion in borrowed pointers chapter

[xphade]

I'm a rust noob, so please tell me if I'm misunderstanding anything here, but:

In the "Borrowed pointers" chapter, when you talk about automatic referencing, you give the following example and explain that pointer types are automatically converted to references:

fn foo(x: &i32) { ... }

fn bar(x: i32, y: Box<i32>) {
    foo(&x);
    // foo(x);   // Error - expected &i32, found i32
    foo(y);      // Ok
    foo(&*y);    // Also ok, and more explicit, but not good style
}

However, when trying this, the foo(y) line produces the following error:

error[E0308]: mismatched types
   --> src/main.rs:132:9
    |
132 |     foo(y); // Ok
    |     --- ^ expected `&i32`, found `Box<i32>`
    |     |
    |     arguments to this function are incorrect
    |
    = note: expected reference `&i32`
                  found struct `Box<i32>`
note: function defined here
   --> src/main.rs:127:4
    |
127 | fn foo(x: &i32) {}
    |    ^^^ -------
help: consider borrowing here
    |
132 |     foo(&y); // Ok
    |         +

For more information about this error, try `rustc --explain E0308`.

So is this statement and the example wrong?