Upgrade rust/crates/tokio to 0.3.3

Test: make
Change-Id: I8fdff1bab68b03bc1fe8179d07e79bd6ece31027

2 files changed, 4 insertions, 1 deletions

diff --git a/src/runtime/blocking/pool.rs b/src/runtime/blocking/pool.rs
index 2967a10..6b9fb1b 100644
--- a/src/runtime/blocking/pool.rs
+++ b/src/runtime/blocking/pool.rs
@@ -70,6 +70,7 @@ const KEEP_ALIVE: Duration = Duration::from_secs(10);
 pub(crate) fn spawn_blocking<F, R>(func: F) -> JoinHandle<R>
 where
     F: FnOnce() -> R + Send + 'static,
+    R: Send + 'static,
 {
     let rt = context::current().expect("not currently running on the Tokio runtime.");
     rt.spawn_blocking(func)
@@ -79,6 +80,7 @@ where
 pub(crate) fn try_spawn_blocking<F, R>(func: F) -> Result<(), ()>
 where
     F: FnOnce() -> R + Send + 'static,
+    R: Send + 'static,
 {
     let rt = context::current().expect("not currently running on the Tokio runtime.");
 
diff --git a/src/runtime/blocking/task.rs b/src/runtime/blocking/task.rs
index a521af4..ee2d8d6 100644
--- a/src/runtime/blocking/task.rs
+++ b/src/runtime/blocking/task.rs
@@ -19,7 +19,8 @@ impl<T> Unpin for BlockingTask<T> {}
 
 impl<T, R> Future for BlockingTask<T>
 where
-    T: FnOnce() -> R,
+    T: FnOnce() -> R + Send + 'static,
+    R: Send + 'static,
 {
     type Output = R;