error[E0214]: parenthesized type parameters may only be used with a `Fn` trait --> $DIR/E0214.rs:2:15 | LL | let v: Vec(&str) = vec!["foo"]; | ^^^^^^ | | | only `Fn` traits may use parentheses | help: use angle brackets instead: `<&str>` error: aborting due to previous error For more information about this error, try `rustc --explain E0214`.