Update crossbeam to avoid multi version dependency
@@ -18,8 +18,8 @@ categories = ["concurrency"]
num_cpus = "1.2"
lazy_static = "1"
crossbeam-deque = "0.7"
-crossbeam-queue = "0.1.2"
-crossbeam-utils = "0.6.5"
+crossbeam-queue = "0.2"
+crossbeam-utils = "0.7"
[dev-dependencies]
rand = "0.6"
