error[E0308]: mismatched types
  --> tests/ui/remote/wrong_getter.rs:15:10
   |
15 | #[derive(Serialize)]
   |          ^^^^^^^^^
   |          |
   |          expected `&u8`, found `&u16`
   |          arguments to this function are incorrect
   |
   = note: expected reference `&u8`
              found reference `&u16`
note: function defined here
  --> $WORKSPACE/serde/src/private/ser.rs
   |
   | pub fn constrain<T: ?Sized>(t: &T) -> &T {
   |        ^^^^^^^^^
   = note: this error originates in the derive macro `Serialize` (in Nightly builds, run with -Z macro-backtrace for more info)