add patch

0001-Update-to-crossbeam-deque-0.7.patch

@@ -0,0 +1,41 @@
+From aaf3296c9470a094f740d004444b45065d00a730 Mon Sep 17 00:00:00 2001
+From: Josh Stone <cuviper@gmail.com>
+Date: Wed, 12 Jun 2019 20:45:51 -0700
+Subject: [PATCH] Update to crossbeam-deque 0.7
+
+---
+ src/iter/par_bridge.rs | 7 ++++---
+ 1 file changed, 4 insertions(+), 3 deletions(-)
+
+diff --git a/src/iter/par_bridge.rs b/src/iter/par_bridge.rs
+index b366de698243..c8197ea65a48 100644
+--- a/src/iter/par_bridge.rs
++++ b/src/iter/par_bridge.rs
+@@ -1,4 +1,4 @@
+-use crossbeam_deque::{self as deque, Steal, Stealer, Worker};
++use crossbeam_deque::{Steal, Stealer, Worker};
+ 
+ use std::sync::atomic::{AtomicBool, AtomicUsize, Ordering};
+ use std::sync::{Mutex, TryLockError};
+@@ -79,7 +79,8 @@ where
+         C: UnindexedConsumer<Self::Item>,
+     {
+         let split_count = AtomicUsize::new(current_num_threads());
+-        let (worker, stealer) = deque::fifo();
++        let worker = Worker::new_fifo();
++        let stealer = worker.stealer();
+         let done = AtomicBool::new(false);
+         let iter = Mutex::new((self.iter, worker));
+ 
+@@ -149,7 +150,7 @@ where
+     {
+         loop {
+             match self.items.steal() {
+-                Steal::Data(it) => {
++                Steal::Success(it) => {
+                     folder = folder.consume(it);
+                     if folder.full() {
+                         return folder;
+-- 
+2.21.0
+