error[E0308]: mismatched types
  --> $DIR/issue-35030.rs:19:14
   |
LL |         Some(true) //~ ERROR mismatched types
   |              ^^^^ expected type parameter, found bool
   |
   = note: expected type `bool` (type parameter)
              found type `bool` (bool)

error: aborting due to previous error

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