diff --git a/src/cache.rs b/src/cache.rs
index 580a00a..cea07bd 100644
--- a/src/cache.rs
+++ b/src/cache.rs
@@ -24,7 +24,7 @@ const MAIN_FILE: &str = "data.json";
 
 /// A CalDAV source that stores its items in a local folder.
 ///
-/// It automatically updates the content of the folder when dropped (see its `Drop` implementation), but you can also manually call [`save_to_folder`]
+/// It automatically updates the content of the folder when dropped (see its `Drop` implementation), but you can also manually call [`Cache::save_to_folder`]
 #[derive(Debug)]
 pub struct Cache {
     backing_folder: PathBuf,
@@ -174,7 +174,7 @@ impl Cache {
 impl Drop for Cache {
     fn drop(&mut self) {
         if let Err(err) = self.save_to_folder() {
-            log::error!("Unable to automatically save the cache when it's no longer required");
+            log::error!("Unable to automatically save the cache when it's no longer required: {}", err);
         }
     }
 }
@@ -233,7 +233,7 @@ mod tests {
 
         let mut cache = Cache::new(&cache_path);
 
-        let shopping_list = cache.create_calendar(
+        let _shopping_list = cache.create_calendar(
             Url::parse("https://caldav.com/shopping").unwrap(),
             "My shopping list".to_string(),
             SupportedComponents::TODO,
diff --git a/src/provider.rs b/src/provider.rs
index b5278b4..3c9d3a0 100644
--- a/src/provider.rs
+++ b/src/provider.rs
@@ -321,10 +321,10 @@ where
                         // TODO: implement update_item (maybe only create_item also updates it?)
                         //
                         if let Err(err) = cal_local.immediately_delete_item(&id_change).await {
-                            result.error(&format!("Unable to delete item {} from local calendar: {}", id_change, err));
+                            result.error(&format!("Unable to delete (update) item {} from local calendar: {}", id_change, err));
                         }
                         if let Err(err) = cal_local.add_item(item.clone()).await {
-                            result.error(&format!("Unable to add item {} to local calendar: {}", id_change, err));
+                            result.error(&format!("Unable to add (update) item {} to local calendar: {}", id_change, err));
                         }
                     },
                 }
@@ -366,10 +366,10 @@ where
                     // TODO: implement update_item (maybe only create_item also updates it?)
                     //
                     if let Err(err) = cal_remote.delete_item(&id_change).await {
-                        result.error(&format!("Unable to delete item {} from remote calendar: {}", id_change, err));
+                        result.error(&format!("Unable to delete (update) item {} from remote calendar: {}", id_change, err));
                     }
                     match cal_remote.add_item(item.clone()).await {
-                        Err(err) => log::error!("Unable to add item {} to remote calendar: {}", id_change, err),
+                        Err(err) => log::error!("Unable to add (update) item {} to remote calendar: {}", id_change, err),
                         Ok(new_ss) => {
                             // Update local sync status
                             item.set_sync_status(new_ss);