| error[E0214]: parenthesized parameters may only be used with a trait |
| --> $DIR/unboxed-closure-sugar-used-on-struct.rs:17:18 |
| | |
| LL | fn foo(b: Box<Bar()>) { |
| | ^^ only traits may use parentheses |
| |
| error[E0121]: the type placeholder `_` is not allowed within types on item signatures |
| --> $DIR/unboxed-closure-sugar-used-on-struct.rs:17:15 |
| | |
| LL | fn foo(b: Box<Bar()>) { |
| | ^^^^^ not allowed in type signatures |
| |
| error: aborting due to 2 previous errors |
| |
| Some errors occurred: E0121, E0214. |
| For more information about an error, try `rustc --explain E0121`. |
