error[E0621]: explicit lifetime required in the type of `x`
  --> $DIR/must_outlive_least_region_or_bound.rs:13:35
   |
LL | fn elided(x: &i32) -> impl Copy { x }
   |              ----                 ^ lifetime `'static` required
   |              |
   |              help: add explicit lifetime `'static` to the type of `x`: `&'static i32`

error: unsatisfied lifetime constraints
  --> $DIR/must_outlive_least_region_or_bound.rs:16:44
   |
LL | fn explicit<'a>(x: &'a i32) -> impl Copy { x }
   |             -- lifetime `'a` defined here  ^ returning this value requires that `'a` must outlive `'static`
help: to allow this impl Trait to capture borrowed data with lifetime `'a`, add `'a` as a constraint
   |
LL | fn explicit<'a>(x: &'a i32) -> impl Copy + 'a { x }
   |                                ^^^^^^^^^^^^^^

error: unsatisfied lifetime constraints
  --> $DIR/must_outlive_least_region_or_bound.rs:22:69
   |
LL | fn with_bound<'a>(x: &'a i32) -> impl LifetimeTrait<'a> + 'static { x }
   |               -- lifetime `'a` defined here                         ^ returning this value requires that `'a` must outlive `'static`
   |
   = help: consider replacing `'a` with `'static`

error: unsatisfied lifetime constraints
  --> $DIR/must_outlive_least_region_or_bound.rs:29:5
   |
LL | fn move_lifetime_into_fn<'a, 'b>(x: &'a u32, y: &'b u32) -> impl Fn(&'a u32) {
   |                          --  -- lifetime `'b` defined here
   |                          |
   |                          lifetime `'a` defined here
LL |     //~^ ERROR lifetime mismatch
LL |     move |_| println!("{}", y)
   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^ function was supposed to return data with lifetime `'a` but it is returning data with lifetime `'b`

error[E0310]: the parameter type `T` may not live long enough
  --> $DIR/must_outlive_least_region_or_bound.rs:32:51
   |
LL | fn ty_param_wont_outlive_static<T:Debug>(x: T) -> impl Debug + 'static {
   |                                                   ^^^^^^^^^^^^^^^^^^^^
   |
   = help: consider adding an explicit lifetime bound `T: 'static`...

error: aborting due to 5 previous errors

Some errors occurred: E0310, E0621.
For more information about an error, try `rustc --explain E0310`.