fixes for new release

src/utils.rs

@@ -95,10 +95,20 @@ mod test {
 pub trait VisExt: Copy {
     /// Check if is private or direct
     fn is_private(self) -> bool;
+    fn make_unlisted(self) -> Self;
 }
 
 impl VisExt for Visibility {
     fn is_private(self) -> bool {
         self == Visibility::Direct || self == Visibility::Private
     }
+
+    fn make_unlisted(self) -> Self {
+        match self {
+            Visibility::Public => {
+                Visibility::Unlisted
+            }
+            other => other,
+        }
+    }
 }