error: lifetime may not live long enough
  --> $DIR/regions-early-bound-error.rs:19:5
   |
LL | fn get<'a,'b,G:GetRef<'a, isize>>(g1: G, b: &'b isize) -> &'b isize {
   |        -- -- lifetime `'b` defined here
   |        |
   |        lifetime `'a` defined here
LL |     g1.get()
   |     ^^^^^^^^ function was supposed to return data with lifetime `'b` but it is returning data with lifetime `'a`
   |
   = help: consider adding the following bound: `'a: 'b`

error: aborting due to 1 previous error