diff --git a/youmubot-osu/src/discord/announcer.rs b/youmubot-osu/src/discord/announcer.rs
index 683609b..fbb2eec 100644
--- a/youmubot-osu/src/discord/announcer.rs
+++ b/youmubot-osu/src/discord/announcer.rs
@@ -76,7 +76,7 @@ impl youmubot_prelude::Announcer for Announcer {
                         Ok(v) => {
                             osu_user.pp = v
                                 .iter()
-                                .map(|u| u.pp.clone())
+                                .map(|u| u.pp)
                                 .collect::<Vec<_>>()
                                 .try_into()
                                 .unwrap();
diff --git a/youmubot-osu/src/discord/db.rs b/youmubot-osu/src/discord/db.rs
index 9cf38a0..c205ec3 100644
--- a/youmubot-osu/src/discord/db.rs
+++ b/youmubot-osu/src/discord/db.rs
@@ -170,7 +170,7 @@ impl From<model::OsuUser> for OsuUser {
             user_id: UserId(u.user_id as u64),
             username: u
                 .username
-                .map(|v| Cow::Owned(v))
+                .map(Cow::Owned)
                 .unwrap_or("unknown".into()),
             id: u.id as u64,
             last_update: u.last_update,
diff --git a/youmubot-osu/src/discord/mod.rs b/youmubot-osu/src/discord/mod.rs
index 35b13bf..65684a1 100644
--- a/youmubot-osu/src/discord/mod.rs
+++ b/youmubot-osu/src/discord/mod.rs
@@ -199,7 +199,7 @@ pub async fn save(ctx: &Context, msg: &Message, mut args: Args) -> CommandResult
         }
         Ok(None)
     }
-    let (score, mode) = match find_score(&osu, &u).await? {
+    let (score, mode) = match find_score(osu, &u).await? {
         Some(v) => v,
         None => {
             msg.reply(
@@ -245,7 +245,7 @@ pub async fn save(ctx: &Context, msg: &Message, mut args: Args) -> CommandResult
     let reaction = reply.react(&ctx, '👌').await?;
     let completed = loop {
         let emoji = reaction.emoji.clone();
-        let user_reaction = CollectReaction::new(&ctx)
+        let user_reaction = CollectReaction::new(ctx)
             .message_id(reply.id.0)
             .author_id(msg.author.id.0)
             .filter(move |r| r.emoji == emoji)
@@ -253,7 +253,7 @@ pub async fn save(ctx: &Context, msg: &Message, mut args: Args) -> CommandResult
             .collect_limit(1)
             .await;
         if let Some(ur) = user_reaction {
-            if check(&osu, &u, score.beatmap_id).await? {
+            if check(osu, &u, score.beatmap_id).await? {
                 break true;
             }
             if let ReactionAction::Added(ur) = &*ur {
diff --git a/youmubot-osu/src/models/mods.rs b/youmubot-osu/src/models/mods.rs
index 0f1de0d..f20013a 100644
--- a/youmubot-osu/src/models/mods.rs
+++ b/youmubot-osu/src/models/mods.rs
@@ -1,7 +1,7 @@
 use serde::{Deserialize, Serialize};
 use std::fmt;
 
-const LAZER_TEXT: &'static str = "v2";
+const LAZER_TEXT: &str = "v2";
 
 bitflags::bitflags! {
     /// The mods available to osu!
diff --git a/youmubot-osu/src/models/rosu.rs b/youmubot-osu/src/models/rosu.rs
index 4c84bbe..92f7b2c 100644
--- a/youmubot-osu/src/models/rosu.rs
+++ b/youmubot-osu/src/models/rosu.rs
@@ -45,7 +45,7 @@ impl Beatmap {
             beatmapset_id: set.mapset_id as u64,
             creator: set.creator_name.clone().into_string(),
             creator_id: set.creator_id as u64,
-            source: Some(set.source.clone()).filter(|s| s != "").clone(),
+            source: Some(set.source.clone()).filter(|s| !s.is_empty()).clone(),
             genre: set.genre.map(|v| v.into()).unwrap_or(Genre::Unspecified),
             language: set.language.map(|v| v.into()).unwrap_or(Language::Any),
             tags: set.tags.split(", ").map(|v| v.to_owned()).collect(),