error[E0495]: cannot infer an appropriate lifetime for autoref due to conflicting requirements
  --> $DIR/issue-17758.rs:7:14
   |
LL |         self.foo();
   |              ^^^
   |
note: first, the lifetime cannot outlive the anonymous lifetime #1 defined on the method body at 6:5...
  --> $DIR/issue-17758.rs:6:5
   |
LL | /     fn bar(&self) {
LL | |         self.foo();
LL | |
LL | |     }
   | |_____^
note: ...so that reference does not outlive borrowed content
  --> $DIR/issue-17758.rs:7:9
   |
LL |         self.foo();
   |         ^^^^
note: but, the lifetime must be valid for the lifetime 'a as defined on the trait at 4:11...
  --> $DIR/issue-17758.rs:4:11
   |
LL | trait Foo<'a> {
   |           ^^
   = note: ...so that the types are compatible:
           expected &'a Self
              found &Self

error: aborting due to previous error