error[E0277]: the size for values of type `str` cannot be known at compilation time
  --> $DIR/issue-14366.rs:2:14
   |
LL |     let _x = "test" as &dyn (::std::any::Any);
   |              ^^^^^^ doesn't have a size known at compile-time
   |
   = help: the trait `Sized` is not implemented for `str`
   = note: required for the cast to the object type `dyn Any`

error: aborting due to previous error

For more information about this error, try `rustc --explain E0277`.
