error[E0277]: an array of type `[u8; 8]` cannot be built directly from an iterator
  --> $DIR/use_self_no_underscore.rs:12:22
   |
LL |     let x: [u8; 8] = FromIterator::from_iter(iter);
   |                      ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ the trait `FromIterator<{integer}>` is not implemented for `[u8; 8]`
   |
help: this trait has no implementations, consider adding one
  --> $DIR/use_self_no_underscore.rs:7:1
   |
LL | pub trait FromIterator<A>: Sized {
   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^

error: aborting due to 1 previous error

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