error[E0282]: type annotations needed for `&T` --> $DIR/issue-12187-1.rs:6:9 | LL | let &v = new(); | ^^ | help: consider giving this pattern a type, where the placeholders `_` are specified | LL | let &v: &T = new(); | ++++ error: aborting due to previous error For more information about this error, try `rustc --explain E0282`.