error: since & implements Copy trait, &Option<&T> can be simplifyied into Option<&T>
  --> $DIR/ref_option_ref.rs:4:22
   |
LL | type OptRefU32<'a> = &'a Option<&'a u32>;
   |                      ^^^^^^^^^^^^^^^^^^^ help: try: `Option<&'a u32>`
   |
   = note: `-D clippy::ref-option-ref` implied by `-D warnings`

error: since & implements Copy trait, &Option<&T> can be simplifyied into Option<&T>
  --> $DIR/ref_option_ref.rs:5:22
   |
LL | type OptRef<'a, T> = &'a Option<&'a T>;
   |                      ^^^^^^^^^^^^^^^^^ help: try: `Option<&'a T>`

error: since & implements Copy trait, &Option<&T> can be simplifyied into Option<&T>
  --> $DIR/ref_option_ref.rs:8:12
   |
LL |     let x: &Option<&u32> = &None;
   |            ^^^^^^^^^^^^^ help: try: `Option<&u32>`

error: aborting due to 3 previous errors