diff --git a/src/cache/cache.rs b/src/cache/cache.rs
index 8573ba0d..ce842448 100644
--- a/src/cache/cache.rs
+++ b/src/cache/cache.rs
@@ -27,6 +27,7 @@ pub struct BytesCache {
 }
 
 impl BytesCache {
+    #[must_use]
     pub fn new() -> Self {
         Self {
             bytes_table: IndexMap::new(),
@@ -36,6 +37,7 @@ impl BytesCache {
     }
 
     // With a total capacity in bytes.
+    #[must_use]
     pub fn with_capacity(capacity: usize) -> Self {
         let mut new = Self::new();
 
@@ -45,6 +47,7 @@ impl BytesCache {
     }
 
     // With a limit for individual entry sizes.
+    #[must_use]
     pub fn with_entry_size_limit(entry_size_limit: usize) -> Self {
         let mut new = Self::new();
 
@@ -77,6 +80,7 @@ impl BytesCache {
     }
 
     // Size of all the entry bytes combined.
+    #[must_use]
     pub fn total_size(&self) -> usize {
         let mut size: usize = 0;
 
diff --git a/src/cache/image/manager.rs b/src/cache/image/manager.rs
index 8a6960a1..bfef1589 100644
--- a/src/cache/image/manager.rs
+++ b/src/cache/image/manager.rs
@@ -19,6 +19,7 @@ pub enum Error {
 
 type UserQuotas = HashMap<i64, ImageCacheQuota>;
 
+#[must_use]
 pub fn now_in_secs() -> u64 {
     match SystemTime::now().duration_since(SystemTime::UNIX_EPOCH) {
         Ok(n) => n.as_secs(),
@@ -36,6 +37,7 @@ pub struct ImageCacheQuota {
 }
 
 impl ImageCacheQuota {
+    #[must_use]
     pub fn new(user_id: i64, max_usage: usize, period_secs: u64) -> Self {
         Self {
             user_id,
@@ -66,6 +68,7 @@ impl ImageCacheQuota {
         self.date_start_secs = now_in_secs();
     }
 
+    #[must_use]
     pub fn is_reached(&self) -> bool {
         self.usage >= self.max_usage
     }
diff --git a/src/console/commands/import_tracker_statistics.rs b/src/console/commands/import_tracker_statistics.rs
index 61206449..ae0c51cc 100644
--- a/src/console/commands/import_tracker_statistics.rs
+++ b/src/console/commands/import_tracker_statistics.rs
@@ -4,7 +4,7 @@ use std::env;
 use std::sync::Arc;
 
 use derive_more::{Display, Error};
-use text_colorizer::*;
+use text_colorizer::Colorize;
 
 use crate::bootstrap::config::init_configuration;
 use crate::bootstrap::logging;
diff --git a/src/databases/mysql.rs b/src/databases/mysql.rs
index 97f699a7..38e07e8b 100644
--- a/src/databases/mysql.rs
+++ b/src/databases/mysql.rs
@@ -467,7 +467,7 @@ impl Database for MysqlDatabase {
             // flatten the nested vec (this will however remove the)
             let announce_urls = announce_urls.iter().flatten().collect::<Vec<&String>>();
 
-            for tracker_url in announce_urls.iter() {
+            for tracker_url in &announce_urls {
                 let _ = query("INSERT INTO torrust_torrent_announce_urls (torrent_id, tracker_url) VALUES (?, ?)")
                     .bind(torrent_id)
                     .bind(tracker_url)
@@ -520,7 +520,7 @@ impl Database for MysqlDatabase {
         match insert_torrent_info_result {
             Ok(_) => {
                 let _ = tx.commit().await;
-                Ok(torrent_id as i64)
+                Ok(torrent_id)
             }
             Err(e) => {
                 let _ = tx.rollback().await;
@@ -560,7 +560,12 @@ impl Database for MysqlDatabase {
         let torrent_files: Vec<TorrentFile> = db_torrent_files
             .into_iter()
             .map(|tf| TorrentFile {
-                path: tf.path.unwrap_or_default().split('/').map(|v| v.to_string()).collect(),
+                path: tf
+                    .path
+                    .unwrap_or_default()
+                    .split('/')
+                    .map(std::string::ToString::to_string)
+                    .collect(),
                 length: tf.length,
                 md5sum: tf.md5sum,
             })
diff --git a/src/databases/sqlite.rs b/src/databases/sqlite.rs
index 3dc022e5..936dd8d5 100644
--- a/src/databases/sqlite.rs
+++ b/src/databases/sqlite.rs
@@ -92,7 +92,7 @@ impl Database for SqliteDatabase {
         match insert_user_profile_result {
             Ok(_) => {
                 let _ = tx.commit().await;
-                Ok(user_id as i64)
+                Ok(user_id)
             }
             Err(e) => {
                 let _ = tx.rollback().await;
@@ -410,7 +410,7 @@ impl Database for SqliteDatabase {
             .bind(root_hash)
             .execute(&self.pool)
             .await
-            .map(|v| v.last_insert_rowid() as i64)
+            .map(|v| v.last_insert_rowid())
             .map_err(|e| match e {
                 sqlx::Error::Database(err) => {
                     if err.message().contains("info_hash") {
@@ -462,7 +462,7 @@ impl Database for SqliteDatabase {
             // flatten the nested vec (this will however remove the)
             let announce_urls = announce_urls.iter().flatten().collect::<Vec<&String>>();
 
-            for tracker_url in announce_urls.iter() {
+            for tracker_url in &announce_urls {
                 let _ = query("INSERT INTO torrust_torrent_announce_urls (torrent_id, tracker_url) VALUES (?, ?)")
                     .bind(torrent_id)
                     .bind(tracker_url)
@@ -515,7 +515,7 @@ impl Database for SqliteDatabase {
         match insert_torrent_info_result {
             Ok(_) => {
                 let _ = tx.commit().await;
-                Ok(torrent_id as i64)
+                Ok(torrent_id)
             }
             Err(e) => {
                 let _ = tx.rollback().await;
@@ -555,7 +555,12 @@ impl Database for SqliteDatabase {
         let torrent_files: Vec<TorrentFile> = db_torrent_files
             .into_iter()
             .map(|tf| TorrentFile {
-                path: tf.path.unwrap_or_default().split('/').map(|v| v.to_string()).collect(),
+                path: tf
+                    .path
+                    .unwrap_or_default()
+                    .split('/')
+                    .map(std::string::ToString::to_string)
+                    .collect(),
                 length: tf.length,
                 md5sum: tf.md5sum,
             })
diff --git a/src/errors.rs b/src/errors.rs
index 571fd9fe..a4eb7943 100644
--- a/src/errors.rs
+++ b/src/errors.rs
@@ -192,7 +192,7 @@ impl ResponseError for ServiceError {
 
 impl From<sqlx::Error> for ServiceError {
     fn from(e: sqlx::Error) -> Self {
-        eprintln!("{:?}", e);
+        eprintln!("{e:?}");
 
         if let Some(err) = e.as_database_error() {
             return if err.code() == Some(Cow::from("2067")) {
@@ -229,28 +229,28 @@ impl From<DatabaseError> for ServiceError {
 
 impl From<argon2::password_hash::Error> for ServiceError {
     fn from(e: argon2::password_hash::Error) -> Self {
-        eprintln!("{}", e);
+        eprintln!("{e}");
         ServiceError::InternalServerError
     }
 }
 
 impl From<std::io::Error> for ServiceError {
     fn from(e: std::io::Error) -> Self {
-        eprintln!("{}", e);
+        eprintln!("{e}");
         ServiceError::InternalServerError
     }
 }
 
 impl From<Box<dyn error::Error>> for ServiceError {
     fn from(e: Box<dyn error::Error>) -> Self {
-        eprintln!("{}", e);
+        eprintln!("{e}");
         ServiceError::InternalServerError
     }
 }
 
 impl From<serde_json::Error> for ServiceError {
     fn from(e: serde_json::Error) -> Self {
-        eprintln!("{}", e);
+        eprintln!("{e}");
         ServiceError::InternalServerError
     }
 }
diff --git a/src/models/response.rs b/src/models/response.rs
index 059e1c3b..58ec31fb 100644
--- a/src/models/response.rs
+++ b/src/models/response.rs
@@ -48,6 +48,7 @@ pub struct TorrentResponse {
 }
 
 impl TorrentResponse {
+    #[must_use]
     pub fn from_listing(torrent_listing: TorrentListing) -> TorrentResponse {
         TorrentResponse {
             torrent_id: torrent_listing.torrent_id,
@@ -57,7 +58,7 @@ impl TorrentResponse {
             description: torrent_listing.description,
             category: Category {
                 category_id: 0,
-                name: "".to_string(),
+                name: String::new(),
                 num_torrents: 0,
             },
             upload_date: torrent_listing.date_uploaded,
@@ -66,7 +67,7 @@ impl TorrentResponse {
             leechers: torrent_listing.leechers,
             files: vec![],
             trackers: vec![],
-            magnet_link: "".to_string(),
+            magnet_link: String::new(),
         }
     }
 }
diff --git a/src/models/torrent_file.rs b/src/models/torrent_file.rs
index be3b6101..befc6161 100644
--- a/src/models/torrent_file.rs
+++ b/src/models/torrent_file.rs
@@ -42,13 +42,15 @@ pub struct TorrentInfo {
 impl TorrentInfo {
     /// torrent file can only hold a pieces key or a root hash key:
     /// http://www.bittorrent.org/beps/bep_0030.html
+    #[must_use]
     pub fn get_pieces_as_string(&self) -> String {
         match &self.pieces {
-            None => "".to_string(),
+            None => String::new(),
             Some(byte_buf) => bytes_to_hex(byte_buf.as_ref()),
         }
     }
 
+    #[must_use]
     pub fn get_root_hash_as_i64(&self) -> i64 {
         match &self.root_hash {
             None => 0i64,
@@ -56,10 +58,12 @@ impl TorrentInfo {
         }
     }
 
+    #[must_use]
     pub fn is_a_single_file_torrent(&self) -> bool {
         self.length.is_some()
     }
 
+    #[must_use]
     pub fn is_a_multiple_file_torrent(&self) -> bool {
         self.files.is_some()
     }
@@ -90,6 +94,7 @@ pub struct Torrent {
 }
 
 impl Torrent {
+    #[must_use]
     pub fn from_db_info_files_and_announce_urls(
         torrent_info: DbTorrentInfo,
         torrent_files: Vec<TorrentFile>,
@@ -170,6 +175,7 @@ impl Torrent {
         }
     }
 
+    #[must_use]
     pub fn calculate_info_hash_as_bytes(&self) -> [u8; 20] {
         let info_bencoded = ser::to_bytes(&self.info).unwrap();
         let mut hasher = Sha1::new();
@@ -180,10 +186,12 @@ impl Torrent {
         sum_bytes
     }
 
+    #[must_use]
     pub fn info_hash(&self) -> String {
         bytes_to_hex(&self.calculate_info_hash_as_bytes())
     }
 
+    #[must_use]
     pub fn file_size(&self) -> i64 {
         if self.info.length.is_some() {
             self.info.length.unwrap()
@@ -201,6 +209,7 @@ impl Torrent {
         }
     }
 
+    #[must_use]
     pub fn announce_urls(&self) -> Vec<String> {
         if self.announce_list.is_none() {
             return vec![self.announce.clone().unwrap()];
@@ -214,10 +223,12 @@ impl Torrent {
             .collect::<Vec<String>>()
     }
 
+    #[must_use]
     pub fn is_a_single_file_torrent(&self) -> bool {
         self.info.is_a_single_file_torrent()
     }
 
+    #[must_use]
     pub fn is_a_multiple_file_torrent(&self) -> bool {
         self.info.is_a_multiple_file_torrent()
     }
diff --git a/src/routes/torrent.rs b/src/routes/torrent.rs
index 293e31b5..ffba1724 100644
--- a/src/routes/torrent.rs
+++ b/src/routes/torrent.rs
@@ -370,9 +370,9 @@ async fn get_torrent_request_from_payload(mut payload: Multipart) -> Result<Torr
     let torrent_buffer = vec![0u8];
     let mut torrent_cursor = Cursor::new(torrent_buffer);
 
-    let mut title = "".to_string();
-    let mut description = "".to_string();
-    let mut category = "".to_string();
+    let mut title = String::new();
+    let mut description = String::new();
+    let mut category = String::new();
 
     while let Ok(Some(mut field)) = payload.try_next().await {
         match field.content_disposition().get_name().unwrap() {
diff --git a/src/routes/user.rs b/src/routes/user.rs
index 11fa4ab9..7917e778 100644
--- a/src/routes/user.rs
+++ b/src/routes/user.rs
@@ -96,7 +96,7 @@ pub async fn register(req: HttpRequest, mut payload: web::Json<Register>, app_da
         return Err(ServiceError::UsernameInvalid);
     }
 
-    let email = payload.email.as_ref().unwrap_or(&"".to_string()).to_string();
+    let email = payload.email.as_ref().unwrap_or(&String::new()).to_string();
 
     let user_id = app_data
         .database
diff --git a/src/upgrades/from_v1_0_0_to_v2_0_0/transferrers/category_transferrer.rs b/src/upgrades/from_v1_0_0_to_v2_0_0/transferrers/category_transferrer.rs
index f3d83d9b..795c9f34 100644
--- a/src/upgrades/from_v1_0_0_to_v2_0_0/transferrers/category_transferrer.rs
+++ b/src/upgrades/from_v1_0_0_to_v2_0_0/transferrers/category_transferrer.rs
@@ -22,12 +22,11 @@ pub async fn transfer_categories(source_database: Arc<SqliteDatabaseV1_0_0>, tar
             .await
             .unwrap();
 
-        if id != cat.category_id {
-            panic!(
-                "Error copying category {:?} from source DB to the target DB",
-                &cat.category_id
-            );
-        }
+        assert!(
+            id == cat.category_id,
+            "Error copying category {:?} from source DB to the target DB",
+            &cat.category_id
+        );
 
         println!("[v2] category: {:?} {:?} added.", id, &cat.name);
     }
diff --git a/src/upgrades/from_v1_0_0_to_v2_0_0/transferrers/torrent_transferrer.rs b/src/upgrades/from_v1_0_0_to_v2_0_0/transferrers/torrent_transferrer.rs
index 88a681f0..89b4fdd7 100644
--- a/src/upgrades/from_v1_0_0_to_v2_0_0/transferrers/torrent_transferrer.rs
+++ b/src/upgrades/from_v1_0_0_to_v2_0_0/transferrers/torrent_transferrer.rs
@@ -29,21 +29,22 @@ pub async fn transfer_torrents(
 
         let uploader = source_database.get_user_by_username(&torrent.uploader).await.unwrap();
 
-        if uploader.username != torrent.uploader {
-            panic!(
-                "Error copying torrent with id {:?}.
+        assert!(
+            uploader.username == torrent.uploader,
+            "Error copying torrent with id {:?}.
                 Username (`uploader`) in `torrust_torrents` table does not match `username` in `torrust_users` table",
-                &torrent.torrent_id
-            );
-        }
+            &torrent.torrent_id
+        );
 
         let filepath = format!("{}/{}.torrent", upload_path, &torrent.torrent_id);
 
         let torrent_from_file_result = read_torrent_from_file(&filepath);
 
-        if torrent_from_file_result.is_err() {
-            panic!("Error torrent file not found: {:?}", &filepath);
-        }
+        assert!(
+            torrent_from_file_result.is_ok(),
+            "Error torrent file not found: {:?}",
+            &filepath
+        );
 
         let torrent_from_file = torrent_from_file_result.unwrap();
 
@@ -52,12 +53,11 @@ pub async fn transfer_torrents(
             .await
             .unwrap();
 
-        if id != torrent.torrent_id {
-            panic!(
-                "Error copying torrent {:?} from source DB to the target DB",
-                &torrent.torrent_id
-            );
-        }
+        assert!(
+            id == torrent.torrent_id,
+            "Error copying torrent {:?} from source DB to the target DB",
+            &torrent.torrent_id
+        );
 
         println!("[v2][torrust_torrents] torrent with id {:?} added.", &torrent.torrent_id);
 
@@ -144,7 +144,7 @@ pub async fn transfer_torrents(
                 .flatten()
                 .collect::<Vec<String>>();
 
-            for tracker_url in announce_urls.iter() {
+            for tracker_url in &announce_urls {
                 println!(
                     "[v2][torrust_torrent_announce_urls][announce-list] adding the torrent announce url for torrent id {:?} ...",
                     &torrent.torrent_id
diff --git a/src/upgrades/from_v1_0_0_to_v2_0_0/transferrers/tracker_key_transferrer.rs b/src/upgrades/from_v1_0_0_to_v2_0_0/transferrers/tracker_key_transferrer.rs
index 51c451b0..1e475d8e 100644
--- a/src/upgrades/from_v1_0_0_to_v2_0_0/transferrers/tracker_key_transferrer.rs
+++ b/src/upgrades/from_v1_0_0_to_v2_0_0/transferrers/tracker_key_transferrer.rs
@@ -28,12 +28,11 @@ pub async fn transfer_tracker_keys(source_database: Arc<SqliteDatabaseV1_0_0>, t
             .await
             .unwrap();
 
-        if id != tracker_key.key_id {
-            panic!(
-                "Error copying tracker key {:?} from source DB to the target DB",
-                &tracker_key.key_id
-            );
-        }
+        assert!(
+            id == tracker_key.key_id,
+            "Error copying tracker key {:?} from source DB to the target DB",
+            &tracker_key.key_id
+        );
 
         println!(
             "[v2][torrust_tracker_keys] tracker key with id {:?} added.",
diff --git a/src/upgrades/from_v1_0_0_to_v2_0_0/transferrers/user_transferrer.rs b/src/upgrades/from_v1_0_0_to_v2_0_0/transferrers/user_transferrer.rs
index 76f5ff44..76791d32 100644
--- a/src/upgrades/from_v1_0_0_to_v2_0_0/transferrers/user_transferrer.rs
+++ b/src/upgrades/from_v1_0_0_to_v2_0_0/transferrers/user_transferrer.rs
@@ -27,9 +27,11 @@ pub async fn transfer_users(
             .await
             .unwrap();
 
-        if id != user.user_id {
-            panic!("Error copying user {:?} from source DB to the target DB", &user.user_id);
-        }
+        assert!(
+            id == user.user_id,
+            "Error copying user {:?} from source DB to the target DB",
+            &user.user_id
+        );
 
         println!("[v2][torrust_users] user: {:?} {:?} added.", &user.user_id, &user.username);
 
diff --git a/src/upgrades/from_v1_0_0_to_v2_0_0/upgrader.rs b/src/upgrades/from_v1_0_0_to_v2_0_0/upgrader.rs
index 0cc0ea53..6e8901f5 100644
--- a/src/upgrades/from_v1_0_0_to_v2_0_0/upgrader.rs
+++ b/src/upgrades/from_v1_0_0_to_v2_0_0/upgrader.rs
@@ -15,7 +15,7 @@ use std::env;
 use std::time::SystemTime;
 
 use chrono::prelude::{DateTime, Utc};
-use text_colorizer::*;
+use text_colorizer::Colorize;
 
 use crate::upgrades::from_v1_0_0_to_v2_0_0::databases::{current_db, migrate_target_database, new_db, reset_target_database};
 use crate::upgrades::from_v1_0_0_to_v2_0_0::transferrers::category_transferrer::transfer_categories;
@@ -102,6 +102,7 @@ pub async fn upgrade(args: &Arguments, date_imported: &str) {
 
 /// Current datetime in ISO8601 without time zone.
 /// For example: 2022-11-10 10:35:15
+#[must_use]
 pub fn datetime_iso_8601() -> String {
     let dt: DateTime<Utc> = SystemTime::now().into();
     format!("{}", dt.format("%Y-%m-%d %H:%M:%S"))
diff --git a/src/utils/hex.rs b/src/utils/hex.rs
index 7903c741..3cc9f57e 100644
--- a/src/utils/hex.rs
+++ b/src/utils/hex.rs
@@ -1,11 +1,12 @@
 use std::fmt::Write;
 use std::num::ParseIntError;
 
+#[must_use]
 pub fn bytes_to_hex(bytes: &[u8]) -> String {
     let mut s = String::with_capacity(2 * bytes.len());
 
     for byte in bytes {
-        write!(s, "{:02X}", byte).unwrap();
+        write!(s, "{byte:02X}").unwrap();
     }
 
     s
diff --git a/src/utils/parse_torrent.rs b/src/utils/parse_torrent.rs
index e272ede8..d15e5c82 100644
--- a/src/utils/parse_torrent.rs
+++ b/src/utils/parse_torrent.rs
@@ -8,7 +8,7 @@ pub fn decode_torrent(bytes: &[u8]) -> Result<Torrent, Box<dyn error::Error>> {
     match de::from_bytes::<Torrent>(bytes) {
         Ok(torrent) => Ok(torrent),
         Err(e) => {
-            println!("{:?}", e);
+            println!("{e:?}");
             Err(e.into())
         }
     }
@@ -18,7 +18,7 @@ pub fn encode_torrent(torrent: &Torrent) -> Result<Vec<u8>, Error> {
     match serde_bencode::to_bytes(torrent) {
         Ok(bencode_bytes) => Ok(bencode_bytes),
         Err(e) => {
-            eprintln!("{:?}", e);
+            eprintln!("{e:?}");
             Err(e)
         }
     }
diff --git a/src/utils/regex.rs b/src/utils/regex.rs
index 4c5b55ff..22df6176 100644
--- a/src/utils/regex.rs
+++ b/src/utils/regex.rs
@@ -1,5 +1,6 @@
 use regex::Regex;
 
+#[must_use]
 pub fn validate_email_address(email_address_to_be_checked: &str) -> bool {
     let email_regex = Regex::new(r"^([a-z\d_+]([a-z\d_+.]*[a-z\d_+])?)@([a-z\d]+([\-.][a-z\d]+)*\.[a-z]{2,6})").unwrap();
 
diff --git a/tests/databases/tests.rs b/tests/databases/tests.rs
index d74088ff..834fdc47 100644
--- a/tests/databases/tests.rs
+++ b/tests/databases/tests.rs
@@ -81,7 +81,7 @@ pub async fn it_can_add_a_torrent_and_tracker_stats_to_that_torrent(db: &Box<dyn
         info: TorrentInfo {
             name: TEST_TORRENT_TITLE.to_string(),
             pieces: Some(ByteBuf::from("1234567890123456789012345678901234567890".as_bytes())),
-            piece_length: 256000,
+            piece_length: 256_000,
             md5sum: None,
             length: Some(TEST_TORRENT_FILE_SIZE),
             files: None,
diff --git a/tests/upgrades/from_v1_0_0_to_v2_0_0/transferrer_testers/category_transferrer_tester.rs b/tests/upgrades/from_v1_0_0_to_v2_0_0/transferrer_testers/category_transferrer_tester.rs
index c10f93b8..b39f9419 100644
--- a/tests/upgrades/from_v1_0_0_to_v2_0_0/transferrer_testers/category_transferrer_tester.rs
+++ b/tests/upgrades/from_v1_0_0_to_v2_0_0/transferrer_testers/category_transferrer_tester.rs
@@ -46,7 +46,7 @@ impl CategoryTester {
 
         // Add test categories
         for categories in &self.test_data.categories {
-            self.source_database.insert_category(&categories).await.unwrap();
+            self.source_database.insert_category(categories).await.unwrap();
         }
     }
 
diff --git a/tests/upgrades/from_v1_0_0_to_v2_0_0/transferrer_testers/torrent_transferrer_tester.rs b/tests/upgrades/from_v1_0_0_to_v2_0_0/transferrer_testers/torrent_transferrer_tester.rs
index 86bd1e52..e6816c41 100644
--- a/tests/upgrades/from_v1_0_0_to_v2_0_0/transferrer_testers/torrent_transferrer_tester.rs
+++ b/tests/upgrades/from_v1_0_0_to_v2_0_0/transferrer_testers/torrent_transferrer_tester.rs
@@ -41,8 +41,8 @@ impl TorrentTester {
             "
                 .to_string(),
             ),
-            upload_date: 1667546358, // 2022-11-04 07:19:18
-            file_size: 9219566,
+            upload_date: 1_667_546_358, // 2022-11-04 07:19:18
+            file_size: 9_219_566,
             seeders: 0,
             leechers: 0,
         };
@@ -61,8 +61,8 @@ impl TorrentTester {
                     "
                 .to_string(),
             ),
-            upload_date: 1667546358, // 2022-11-04 07:19:18
-            file_size: 9219566,
+            upload_date: 1_667_546_358, // 2022-11-04 07:19:18
+            file_size: 9_219_566,
             seeders: 0,
             leechers: 0,
         };
@@ -79,7 +79,7 @@ impl TorrentTester {
 
     pub async fn load_data_into_source_db(&self) {
         for torrent in &self.test_data.torrents {
-            self.source_database.insert_torrent(&torrent).await.unwrap();
+            self.source_database.insert_torrent(torrent).await.unwrap();
         }
     }
 
@@ -89,10 +89,10 @@ impl TorrentTester {
 
             let torrent_file = read_torrent_from_file(&filepath).unwrap();
 
-            self.assert_torrent(&torrent, &torrent_file).await;
-            self.assert_torrent_info(&torrent).await;
-            self.assert_torrent_announce_urls(&torrent, &torrent_file).await;
-            self.assert_torrent_files(&torrent, &torrent_file).await;
+            self.assert_torrent(torrent, &torrent_file).await;
+            self.assert_torrent_info(torrent).await;
+            self.assert_torrent_announce_urls(torrent, &torrent_file).await;
+            self.assert_torrent_files(torrent, &torrent_file).await;
         }
     }
 
diff --git a/tests/upgrades/from_v1_0_0_to_v2_0_0/transferrer_testers/tracker_key_transferrer_tester.rs b/tests/upgrades/from_v1_0_0_to_v2_0_0/transferrer_testers/tracker_key_transferrer_tester.rs
index e50ac861..74c13db2 100644
--- a/tests/upgrades/from_v1_0_0_to_v2_0_0/transferrer_testers/tracker_key_transferrer_tester.rs
+++ b/tests/upgrades/from_v1_0_0_to_v2_0_0/transferrer_testers/tracker_key_transferrer_tester.rs
@@ -21,7 +21,7 @@ impl TrackerKeyTester {
             key_id: 1,
             user_id,
             key: "rRstSTM5rx0sgxjLkRSJf3rXODcRBI5T".to_string(),
-            valid_until: 2456956800, // 11-10-2047 00:00:00 UTC
+            valid_until: 2_456_956_800, // 11-10-2047 00:00:00 UTC
         };
 
         Self {
diff --git a/tests/upgrades/from_v1_0_0_to_v2_0_0/upgrader.rs b/tests/upgrades/from_v1_0_0_to_v2_0_0/upgrader.rs
index 9e207b22..5256274d 100644
--- a/tests/upgrades/from_v1_0_0_to_v2_0_0/upgrader.rs
+++ b/tests/upgrades/from_v1_0_0_to_v2_0_0/upgrader.rs
@@ -38,8 +38,8 @@ impl Default for TestConfig {
         let fixtures_dir = "./tests/upgrades/from_v1_0_0_to_v2_0_0/fixtures/".to_string();
         let upload_path = format!("{}uploads/", &fixtures_dir);
         let output_dir = "./tests/upgrades/from_v1_0_0_to_v2_0_0/output/".to_string();
-        let source_database_file = format!("{}source.db", output_dir);
-        let target_database_file = format!("{}target.db", output_dir);
+        let source_database_file = format!("{output_dir}source.db");
+        let target_database_file = format!("{output_dir}target.db");
         Self {
             fixtures_dir,
             upload_path,
@@ -105,20 +105,20 @@ async fn setup_databases(config: &TestConfig) -> (Arc<SqliteDatabaseV1_0_0>, Arc
 }
 
 async fn source_db_connection(source_database_file: &str) -> Arc<SqliteDatabaseV1_0_0> {
-    Arc::new(SqliteDatabaseV1_0_0::db_connection(&source_database_file).await)
+    Arc::new(SqliteDatabaseV1_0_0::db_connection(source_database_file).await)
 }
 
 async fn target_db_connection(target_database_file: &str) -> Arc<SqliteDatabaseV2_0_0> {
-    Arc::new(SqliteDatabaseV2_0_0::db_connection(&target_database_file).await)
+    Arc::new(SqliteDatabaseV2_0_0::db_connection(target_database_file).await)
 }
 
 /// Reset databases from previous executions
 fn reset_databases(source_database_file: &str, target_database_file: &str) {
     if Path::new(source_database_file).exists() {
-        fs::remove_file(&source_database_file).expect("Can't remove the source DB file.");
+        fs::remove_file(source_database_file).expect("Can't remove the source DB file.");
     }
 
     if Path::new(target_database_file).exists() {
-        fs::remove_file(&target_database_file).expect("Can't remove the target DB file.");
+        fs::remove_file(target_database_file).expect("Can't remove the target DB file.");
     }
 }