error: lifetime parameters must be declared prior to type parameters
  --> $DIR/issue-14303-fn-def.rs:1:15
   |
LL | fn foo<'a, T, 'b>(x: &'a T) {}
   |       --------^^- help: reorder the parameters: lifetimes, then consts and types: `<'a, 'b, T>`

error: aborting due to previous error