Add missing dyn in tests

Author: ljedrz

src/libstd/error.rs

@@ -533,13 +533,13 @@ mod tests {
     #[test]
     fn downcasting() {
         let mut a = A;
-        let a = &mut a as &mut (Error + 'static);
+        let a = &mut a as &mut (dyn Error + 'static);
         assert_eq!(a.downcast_ref::<A>(), Some(&A));
         assert_eq!(a.downcast_ref::<B>(), None);
         assert_eq!(a.downcast_mut::<A>(), Some(&mut A));
         assert_eq!(a.downcast_mut::<B>(), None);
 
-        let a: Box<Error> = Box::new(A);
+        let a: Box<dyn Error> = Box::new(A);
         match a.downcast::<B>() {
             Ok(..) => panic!("expected error"),
             Err(e) => assert_eq!(*e.downcast::<A>().unwrap(), A),

src/libstd/io/util.rs

@@ -223,7 +223,7 @@ mod tests {
         assert_eq!(copy(&mut r, &mut w).unwrap(), 4);
 
         let mut r = repeat(0).take(1 << 17);
-        assert_eq!(copy(&mut r as &mut Read, &mut w as &mut Write).unwrap(), 1 << 17);
+        assert_eq!(copy(&mut r as &mut dyn Read, &mut w as &mut dyn Write).unwrap(), 1 << 17);
     }
 
     #[test]

src/libstd/net/tcp.rs

@@ -927,7 +927,7 @@ mod tests {
     use time::{Instant, Duration};
     use thread;
 
-    fn each_ip(f: &mut FnMut(SocketAddr)) {
+    fn each_ip(f: &mut dyn FnMut(SocketAddr)) {
         f(next_test_ip4());
         f(next_test_ip6());
     }

src/libstd/net/udp.rs

@@ -826,7 +826,7 @@ mod tests {
     use time::{Instant, Duration};
     use thread;
 
-    fn each_ip(f: &mut FnMut(SocketAddr, SocketAddr)) {
+    fn each_ip(f: &mut dyn FnMut(SocketAddr, SocketAddr)) {
         f(next_test_ip4(), next_test_ip4());
         f(next_test_ip6(), next_test_ip6());
     }

src/libstd/thread/mod.rs

@@ -1438,7 +1438,7 @@ mod tests {
         rx.recv().unwrap();
     }
 
-    fn avoid_copying_the_body<F>(spawnfn: F) where F: FnOnce(Box<Fn() + Send>) {
+    fn avoid_copying_the_body<F>(spawnfn: F) where F: FnOnce(Box<dyn Fn() + Send>) {
         let (tx, rx) = channel();
 
         let x: Box<_> = box 1;
@@ -1485,7 +1485,7 @@ mod tests {
         // (well, it would if the constant were 8000+ - I lowered it to be more
         // valgrind-friendly. try this at home, instead..!)
         const GENERATIONS: u32 = 16;
-        fn child_no(x: u32) -> Box<Fn() + Send> {
+        fn child_no(x: u32) -> Box<dyn Fn() + Send> {
             return Box::new(move|| {
                 if x < GENERATIONS {
                     thread::spawn(move|| child_no(x+1)());
@@ -1531,10 +1531,10 @@ mod tests {
     #[test]
     fn test_try_panic_message_any() {
         match thread::spawn(move|| {
-            panic!(box 413u16 as Box<Any + Send>);
+            panic!(box 413u16 as Box<dyn Any + Send>);
         }).join() {
             Err(e) => {
-                type T = Box<Any + Send>;
+                type T = Box<dyn Any + Send>;
                 assert!(e.is::<T>());
                 let any = e.downcast::<T>().unwrap();
                 assert!(any.is::<u16>());