| error[E0207]: the lifetime parameter `'a` is not constrained by the impl trait, self type, or predicates |
| --> $DIR/issue-22886.rs:13:6 |
| | |
| LL | impl<'a> Iterator for Newtype { |
| | ^^ unconstrained lifetime parameter |
| | |
| help: use the lifetime parameter `'a` in the `Newtype` type and use it in the type definition |
| | |
| LL ~ struct Newtype<'a>(Option<Box<usize>>); |
| LL | |
| LL ~ impl<'a> Iterator for Newtype<'a> { |
| | |
| |
| error: aborting due to 1 previous error |
| |
| For more information about this error, try `rustc --explain E0207`. |
