error[E0308]: mismatched types
  --> $DIR/option-to-bool.rs:4:16
   |
LL |     if true && x {}
   |        ----    ^ expected `bool`, found `Option<i32>`
   |        |
   |        expected because this is `bool`
   |
   = note: expected type `bool`
              found enum `Option<i32>`
help: use `Option::is_some` to test if the `Option` has a value
   |
LL |     if true && x.is_some() {}
   |                 ++++++++++

error: aborting due to 1 previous error

For more information about this error, try `rustc --explain E0308`.