error[E0493]: destructor of `F` cannot be evaluated at compile-time --> $DIR/normalize-tait-in-const.rs:25:79 | LL | const fn with_positive Fn(&'a Alias<'a>) + ~const Destruct>(fun: F) { | ^^^ the destructor for this type cannot be evaluated in constant functions LL | fun(filter_positive()); LL | } | - value is dropped here error: aborting due to previous error For more information about this error, try `rustc --explain E0493`.