diff --git a/teos-common/src/receipts.rs b/teos-common/src/receipts.rs
index 6e806c22..699c3c54 100644
--- a/teos-common/src/receipts.rs
+++ b/teos-common/src/receipts.rs
@@ -9,11 +9,11 @@ use crate::{cryptography, UserId};
 /// Proof that a user has registered with a tower. This serves two purposes:
 ///
 /// - First, the user is able to prove that the tower agreed on providing a service. If a tower refuses to accept appointments
-/// from a user (claiming the subscription has expired) but the expiry time has still not passed and the tower cannot
-/// provide the relevant appointments signed by the user, it means it is cheating.
+///   from a user (claiming the subscription has expired) but the expiry time has still not passed and the tower cannot
+///   provide the relevant appointments signed by the user, it means it is cheating.
 /// - Second, it serves as proof, alongside an appointment receipt, that an appointment was not fulfilled. A registration receipt
-/// specifies a subscription period (`subscription_start` - `subscription_expiry`) and the appointment a `start_block` so inclusion
-/// can be proved.
+///   specifies a subscription period (`subscription_start` - `subscription_expiry`) and the appointment a `start_block` so inclusion
+///   can be proved.
 ///
 /// TODO: / DISCUSS: In order to minimize the amount of receipts the user has to store, the tower could batch subscription receipts
 /// as long as the user info is still known. That is, if a user has a subscription with range (S, E) and the user renews the subscription
diff --git a/teos/src/config.rs b/teos/src/config.rs
index 109dd91b..f1db3de0 100644
--- a/teos/src/config.rs
+++ b/teos/src/config.rs
@@ -18,13 +18,10 @@ pub fn data_dir_absolute_path(data_dir: String) -> PathBuf {
 
 pub fn from_file<T: Default + serde::de::DeserializeOwned>(path: &PathBuf) -> T {
     match std::fs::read(path) {
-        Ok(file_content) => toml::from_slice::<T>(&file_content).map_or_else(
-            |e| {
-                eprintln!("Couldn't parse config file: {e}");
-                T::default()
-            },
-            |config| config,
-        ),
+        Ok(file_content) => toml::from_slice::<T>(&file_content).unwrap_or_else(|e| {
+            eprintln!("Couldn't parse config file: {e}");
+            T::default()
+        }),
         Err(_) => T::default(),
     }
 }
@@ -392,7 +389,7 @@ mod tests {
         assert_eq!(config.api_bind, expected_value);
 
         // Check the rest of fields are equal. The easiest is to just the field back and compare with a clone
-        config.api_bind = config_clone.api_bind.clone();
+        config.api_bind.clone_from(&config_clone.api_bind);
         assert_eq!(config, config_clone);
     }
 
diff --git a/teos/src/tx_index.rs b/teos/src/tx_index.rs
index c9d22b4e..404c0474 100644
--- a/teos/src/tx_index.rs
+++ b/teos/src/tx_index.rs
@@ -378,7 +378,7 @@ mod tests {
             // Check that the block data is not in the cache anymore
             assert_eq!(cache.blocks().len(), cache.size - i - 1);
             assert!(!cache.blocks().contains(&header.block_hash()));
-            assert!(cache.tx_in_block.get(&header.block_hash()).is_none());
+            assert!(!cache.tx_in_block.contains_key(&header.block_hash()));
             for locator in locators.iter() {
                 assert!(!cache.contains_key(locator));
             }
diff --git a/watchtower-plugin/src/main.rs b/watchtower-plugin/src/main.rs
index 5778e8d0..1b845a64 100755
--- a/watchtower-plugin/src/main.rs
+++ b/watchtower-plugin/src/main.rs
@@ -385,7 +385,7 @@ async fn abandon_tower(
 ) -> Result<serde_json::Value, Error> {
     let tower_id = TowerId::try_from(v).map_err(|e| anyhow!(e))?;
     let mut state = plugin.state().lock().unwrap();
-    if state.towers.get(&tower_id).is_some() {
+    if state.towers.contains_key(&tower_id) {
         state.remove_tower(tower_id).unwrap();
         Ok(json!(format!("{tower_id} successfully abandoned")))
     } else {
diff --git a/watchtower-plugin/src/retrier.rs b/watchtower-plugin/src/retrier.rs
index eaf79e6e..dcbfaa66 100644
--- a/watchtower-plugin/src/retrier.rs
+++ b/watchtower-plugin/src/retrier.rs
@@ -432,7 +432,7 @@ impl Retrier {
         // Create a new scope so we can get all the data only locking the WTClient once.
         let (tower_id, status, net_addr, user_id, user_sk, proxy) = {
             let wt_client = self.wt_client.lock().unwrap();
-            if wt_client.towers.get(&self.tower_id).is_none() {
+            if !wt_client.towers.contains_key(&self.tower_id) {
                 return Err(Error::permanent(RetryError::Abandoned));
             }