1 error[E0600]: cannot apply unary operator `-` to type `bool`
2 --> $DIR/unop-neg-bool.rs:2:5
5 | ^^^^^ cannot apply unary operator `-`
7 = note: an implementation of `std::ops::Neg` might be missing for `bool`
9 error: aborting due to previous error
11 For more information about this error, try `rustc --explain E0600`.