| error[E0618]: expected function, found struct `Empty2` | 
 |   --> $DIR/empty-struct-unit-expr.rs:15:14 | 
 |    | | 
 | LL | struct Empty2; | 
 |    | ------------- struct `Empty2` defined here | 
 | ... | 
 | LL |     let e2 = Empty2(); | 
 |    |              ^^^^^^-- | 
 |    |              | | 
 |    |              call expression requires function | 
 |    | | 
 | help: `Empty2` is a unit struct, and does not take parentheses to be constructed | 
 |    | | 
 | LL -     let e2 = Empty2(); | 
 | LL +     let e2 = Empty2; | 
 |    | | 
 |  | 
 | error[E0618]: expected function, found enum variant `E::Empty4` | 
 |   --> $DIR/empty-struct-unit-expr.rs:16:14 | 
 |    | | 
 | LL |     Empty4 | 
 |    |     ------ enum variant `E::Empty4` defined here | 
 | ... | 
 | LL |     let e4 = E::Empty4(); | 
 |    |              ^^^^^^^^^-- | 
 |    |              | | 
 |    |              call expression requires function | 
 |    | | 
 | help: `E::Empty4` is a unit enum variant, and does not take parentheses to be constructed | 
 |    | | 
 | LL -     let e4 = E::Empty4(); | 
 | LL +     let e4 = E::Empty4; | 
 |    | | 
 |  | 
 | error[E0618]: expected function, found struct `XEmpty2` | 
 |   --> $DIR/empty-struct-unit-expr.rs:18:15 | 
 |    | | 
 | LL |     let xe2 = XEmpty2(); | 
 |    |               ^^^^^^^-- | 
 |    |               | | 
 |    |               call expression requires function | 
 |    | | 
 | help: `XEmpty2` is a unit struct, and does not take parentheses to be constructed | 
 |    | | 
 | LL -     let xe2 = XEmpty2(); | 
 | LL +     let xe2 = XEmpty2; | 
 |    | | 
 |  | 
 | error[E0618]: expected function, found enum variant `XE::XEmpty4` | 
 |   --> $DIR/empty-struct-unit-expr.rs:19:15 | 
 |    | | 
 | LL |     let xe4 = XE::XEmpty4(); | 
 |    |               ^^^^^^^^^^^-- | 
 |    |               | | 
 |    |               call expression requires function | 
 |    | | 
 | help: `XE::XEmpty4` is a unit enum variant, and does not take parentheses to be constructed | 
 |    | | 
 | LL -     let xe4 = XE::XEmpty4(); | 
 | LL +     let xe4 = XE::XEmpty4; | 
 |    | | 
 |  | 
 | error: aborting due to 4 previous errors | 
 |  | 
 | For more information about this error, try `rustc --explain E0618`. |