error[E0214]: parenthesized type parameters may only be used with a `Fn` trait --> $DIR/E0214.rs:2:12 | LL | let v: Vec(&str) = vec!["foo"]; | ^^^^^^^^^ only `Fn` traits may use parentheses | help: use angle brackets instead | LL | let v: Vec<&str> = vec!["foo"]; | ~ ~ error: aborting due to 1 previous error For more information about this error, try `rustc --explain E0214`.