error[E0382]: use of moved value: `b`
  --> $DIR/borrowck-consume-unsize-vec.rs:8:13
   |
LL | fn foo(b: Box<[i32;5]>) {
   |        - move occurs because `b` has type `std::boxed::Box<[i32; 5]>`, which does not implement the `Copy` trait
LL |     consume(b);
   |             - value moved here
LL |     consume(b);
   |             ^ value used here after move

error: aborting due to previous error

For more information about this error, try `rustc --explain E0382`.