1 error[E0580]: `main` function has wrong type
2 --> $DIR/main-wrong-type.rs:6:1
5 | ^^^^^^^^^^^^^^^ incorrect number of function parameters
7 = note: expected fn pointer `fn()`
8 found fn pointer `fn(S)`
10 error: aborting due to previous error
12 For more information about this error, try `rustc --explain E0580`.