| error[E0283]: type annotations needed | |
| --> $DIR/issue-21974.rs:11:19 | |
| | | |
| LL | trait Foo { | |
| | --------- required by this bound in `Foo` | |
| ... | |
| LL | where &'a T : Foo, | |
| | ^^^ cannot infer type for reference `&'a T` | |
| | | |
| = note: cannot satisfy `&'a T: Foo` | |
| error: aborting due to previous error | |
| For more information about this error, try `rustc --explain E0283`. |