1 error[E0308]: mismatched types
2 --> $DIR/issue-17033.rs:2:10
7 | | expected `&mut ()`, found `()`
8 | | help: consider mutably borrowing here: `&mut ()`
9 | arguments to this function are incorrect
11 error: aborting due to previous error
13 For more information about this error, try `rustc --explain E0308`.