message: Remove "move" in closure in join.rs->join function
diff: @@ -155,7 +155,7 @@ fn join<'a, T: 'static + Debug>(
  Some(Ok(item)).into_iter()
  })
  .enumerate()
  - .filter_map(move |(i, item)| {
  + .filter_map(|(i, item)| {
  let (is_last, blend_context) = try_some!(item);
  match !is_last || i == 0 {
  