error[E0263]: lifetime name `'a` declared twice in the same scope
  --> $DIR/regions-name-duplicated.rs:1:16
   |
LL | struct Foo<'a, 'a> {
   |            --  ^^ declared twice
   |            |
   |            previous declaration here

error: aborting due to previous error

For more information about this error, try `rustc --explain E0263`.