error[E0508]: cannot move out of type `[u8]`, a non-copy slice
  --> $DIR/unsized-exprs2.rs:22:19
   |
LL |     udrop::<[u8]>(foo()[..]);
   |                   ^^^^^^^^^
   |                   |
   |                   cannot move out of here
   |                   move occurs because value has type `[u8]`, which does not implement the `Copy` trait

error: aborting due to previous error

For more information about this error, try `rustc --explain E0508`.
