error[E0312]: lifetime of reference outlives lifetime of borrowed content...
  --> $DIR/ex1-return-one-existing-name-self-is-anon.rs:18:30
   |
18 |         if true { x } else { self }
   |                              ^^^^
   |
note: ...the reference is valid for the lifetime 'a as defined on the method body at 16:5...
  --> $DIR/ex1-return-one-existing-name-self-is-anon.rs:16:5
   |
16 | /     fn foo<'a>(&self, x: &'a Foo) -> &'a Foo {
17 | |
18 | |         if true { x } else { self }
19 | |
20 | |     }
   | |_____^
note: ...but the borrowed content is only valid for the anonymous lifetime #1 defined on the method body at 16:5
  --> $DIR/ex1-return-one-existing-name-self-is-anon.rs:16:5
   |
16 | /     fn foo<'a>(&self, x: &'a Foo) -> &'a Foo {
17 | |
18 | |         if true { x } else { self }
19 | |
20 | |     }
   | |_____^

error: aborting due to previous error(s)