chain and try_iter

[Running cargo test]
   Compiling solana v0.9.0 (file:///Users/anatolyyakovenko/solana)
error[E0271]: type mismatch resolving `<std::sync::mpsc::TryIter<'_, (std::vec::Vec<transaction::Transaction>, hash::Hash)> as std::iter::IntoIterator>::Item == &(std::vec::Vec<transaction::Transaction>, hash::Hash)`
   --> src/banking_stage.rs:122:90
    |
122 |         for (processed_transactions, hash) in [transaction_receiver.recv()?].into_iter().chain(transaction_receiver.try_iter()) {
    |                                                                                          ^^^^^ expected tuple, found reference
    |
    = note: expected type `(std::vec::Vec<transaction::Transaction>, hash::Hash)`
               found type `&(std::vec::Vec<transaction::Transaction>, hash::Hash)`

error[E0271]: type mismatch resolving `<std::sync::mpsc::TryIter<'_, (std::vec::Vec<transaction::Transaction>, hash::Hash)> as std::iter::Iterator>::Item == &(std::vec::Vec<transaction::Transaction>, hash::Hash)`
   --> src/banking_stage.rs:122:47
    |
122 |         for (processed_transactions, hash) in [transaction_receiver.recv()?].into_iter().chain(transaction_receiver.try_iter()) {
    |                                               ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ expected tuple, found reference
    |
    = note: expected type `(std::vec::Vec<transaction::Transaction>, hash::Hash)`
               found type `&(std::vec::Vec<transaction::Transaction>, hash::Hash)`
    = note: required because of the requirements on the impl of `std::iter::Iterator` for `std::iter::Chain<std::slice::Iter<'_, (std::vec::Vec<transaction::Transaction>, hash::Hash)>, std::sync::mpsc::TryIter<'_, (std::vec::Vec<transaction::Transaction>, hash::Hash)>>`

error: aborting due to 2 previous errors