Replace try! macro in test suite

test_suite/tests/bytes/mod.rs

@@ -22,7 +22,7 @@ impl<'de> Visitor<'de> for ByteBufVisitor {
         V: SeqAccess<'de>,
     {
         let mut values = Vec::new();
-        while let Some(value) = try!(visitor.next_element()) {
+        while let Some(value) = visitor.next_element()? {
             values.push(value);
         }
         Ok(values)

test_suite/tests/test_annotations.rs

@@ -68,7 +68,7 @@ impl DeserializeWith for i32 {
     where
         D: Deserializer<'de>,
     {
-        if try!(Deserialize::deserialize(de)) {
+        if Deserialize::deserialize(de)? {
             Ok(123)
         } else {
             Ok(2)