diff --git a/src/db.rs b/src/db.rs
index 6e64472..baa72a4 100644
--- a/src/db.rs
+++ b/src/db.rs
@@ -7,7 +7,7 @@ use std::fmt;
 
 
 // TODO: use this structure in HashSet of items
-#[derive(Debug, PartialEq, Eq, Hash)]
+#[derive(PartialEq, Eq, Hash)]
 pub struct Item {
     pub id: String,
     pub content: String
@@ -21,7 +21,7 @@ impl Item {
 }
 
 impl fmt::Display for Item {
-    fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
+    fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
         writeln!(f, "{}", self.id)?;
         writeln!(f, "---------")?;
         writeln!(f, "{}", self.content)
@@ -29,8 +29,10 @@ impl fmt::Display for Item {
 }
 
 pub fn test_items() {
-    let item1 = Item::from("item1".to_string());
-    let item2 = Item::from("item2".to_string());
+    let mut item1 = Item::from("item1".to_string());
+    item1.content = "some content".to_string();
+    let mut item2 = Item::from("item1".to_string());
+    item2.content = "other content".to_string();
 
     let mut hs = HashSet::<Item>::new();
     hs.insert(item1);