1 error[E0637]: `'_` cannot be used here
2 --> $DIR/underscore-outlives-bounds.rs:7:10
4 LL | impl<'b: '_> Foo<'b> for i32 {}
5 | ^^ `'_` is a reserved lifetime name
7 error: aborting due to previous error
9 For more information about this error, try `rustc --explain E0637`.