| error[E0392]: lifetime parameter `'a` is never used | |
| --> $DIR/dedup.rs:6:12 | |
| | | |
| LL | struct Foo<'a>; | |
| | ^^ unused lifetime parameter | |
| | | |
| = help: consider removing `'a`, referring to it in a field, or using a marker such as `PhantomData` | |
| error: aborting due to 1 previous error | |
| For more information about this error, try `rustc --explain E0392`. |