diff --git a/file-service/src/store/filehandle.rs b/file-service/src/store/filehandle.rs
index c516411..cd57693 100644
--- a/file-service/src/store/filehandle.rs
+++ b/file-service/src/store/filehandle.rs
@@ -244,7 +244,7 @@ mod test {
         let tmp = TempDir::new("var").unwrap();
         let handle =
             FileHandle::new("rawr.png".to_owned(), PathBuf::from(tmp.path())).expect("to succeed");
-        assert_eq!(handle.info.name, Some("rawr".to_owned()));
+        assert_eq!(handle.info.name, "rawr");
         assert_eq!(handle.info.size, 0);
         assert_eq!(handle.info.file_type, "image/png");
         assert_eq!(handle.info.extension, "png");
diff --git a/tree/src/lib.rs b/tree/src/lib.rs
index 2b9cdc8..4644876 100644
--- a/tree/src/lib.rs
+++ b/tree/src/lib.rs
@@ -9,18 +9,13 @@ use std::{
     rc::Rc,
 };
 
-#[derive(Clone, Debug)]
+#[derive(Clone, Debug, Default)]
 pub enum Tree<T> {
+    #[default]
     Empty,
     Root(Node<T>),
 }
 
-impl<T> Default for Tree<T> {
-    fn default() -> Self {
-        Tree::Empty
-    }
-}
-
 impl<T> Tree<T> {
     pub fn new(value: T) -> (Tree<T>, Node<T>) {
         let node = Node::new(value);
@@ -129,14 +124,14 @@ impl<T> Node<T> {
     }
 
     /// Immutably retrieve the data in this node.
-    pub fn value<'a>(&self) -> Ref<T> {
+    pub fn value(&self) -> Ref<T> {
         // Ref::map is not actually a member function. I don't know why this was done, other than
         // maybe to avoid conflicting with other `map` declarations. Why that is necessary when
         // Option::map exists as a member, I don't know.
         Ref::map(self.0.borrow(), |v| &v.value)
     }
 
-    pub fn children<'a>(&self) -> Ref<Vec<Node<T>>> {
+    pub fn children(&self) -> Ref<Vec<Node<T>>> {
         Ref::map(self.0.borrow(), |v| &v.children)
     }