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error[E0214]: parenthesized type parameters may only be used with a `Fn` trait
--> $DIR/unboxed-closure-sugar-used-on-struct-3.rs:14:13
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LL | let b = Bar::(isize, usize)::new(); // OK too (for the parser)
| ^^^^^^^^^^^^^^^^^^^ only `Fn` traits may use parentheses
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help: use angle brackets instead
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LL | let b = Bar::<isize, usize>::new(); // OK too (for the parser)
| ~ ~
error: aborting due to 1 previous error
For more information about this error, try `rustc --explain E0214`.
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