error[E0261]: use of undeclared lifetime name `'test`
  --> $DIR/no_introducing_in_band_in_locals.rs:5:13
   |
LL | fn foo(x: &u32) {
   |       - help: consider introducing lifetime `'test` here: `<'test>`
LL |     let y: &'test u32 = x;
   |             ^^^^^ undeclared lifetime

error[E0261]: use of undeclared lifetime name `'test`
  --> $DIR/no_introducing_in_band_in_locals.rs:10:16
   |
LL |     let y: fn(&'test u32) = foo2;
   |                ^^^^^ undeclared lifetime
   |
   = note: for more information on higher-ranked polymorphism, visit https://doc.rust-lang.org/nomicon/hrtb.html
help: consider introducing lifetime `'test` here
   |
LL | fn bar<'test>() {
   |       +++++++
help: consider making the type lifetime-generic with a new `'test` lifetime
   |
LL |     let y: for<'test> fn(&'test u32) = foo2;
   |            ++++++++++

error: aborting due to 2 previous errors

For more information about this error, try `rustc --explain E0261`.