fix: the pedantic clippy warnings

Author: josecelano

src/config.rs

@@ -74,7 +74,7 @@ impl std::fmt::Display for Error {
             Error::ConfigError(e) => e.fmt(f),
             Error::IOError(e) => e.fmt(f),
             Error::ParseError(e) => e.fmt(f),
-            Error::TrackerModeIncompatible => write!(f, "{:?}", self),
+            Error::TrackerModeIncompatible => write!(f, "{self:?}"),
         }
     }
 }
@@ -296,6 +296,6 @@ mod tests {
     fn configuration_error_could_be_displayed() {
         let error = Error::TrackerModeIncompatible;
 
-        assert_eq!(format!("{}", error), "TrackerModeIncompatible");
+        assert_eq!(format!("{error}"), "TrackerModeIncompatible");
     }
 }

src/protocol/info_hash.rs

@@ -133,7 +133,7 @@ mod tests {
     fn an_info_hash_should_by_displayed_like_a_40_utf8_lowercased_char_hex_string() {
         let info_hash = InfoHash::from_str("FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF").unwrap();
 
-        let output = format!("{}", info_hash);
+        let output = format!("{info_hash}");
 
         assert_eq!(output, "ffffffffffffffffffffffffffffffffffffffff");
     }

src/tracker/auth.rs

@@ -90,7 +90,7 @@ pub enum Error {
 
 impl From<r2d2_sqlite::rusqlite::Error> for Error {
     fn from(e: r2d2_sqlite::rusqlite::Error) -> Self {
-        eprintln!("{}", e);
+        eprintln!("{e}");
         Error::KeyVerificationError
     }
 }

src/udp/handlers.rs

@@ -255,8 +255,10 @@ mod tests {
     }
 
     fn default_testing_tracker_configuration() -> Configuration {
-        let mut config = Configuration::default();
-        config.log_level = Some("off".to_owned());
+        let mut config = Configuration {
+            log_level: Some("off".to_owned()),
+            ..Default::default()
+        };
 
         // Ephemeral socket address
         let port = ephemeral_random_port();

tests/api.rs

@@ -203,8 +203,10 @@ mod tracker_api {
     }
 
     fn tracker_configuration() -> Arc<Configuration> {
-        let mut config = Configuration::default();
-        config.log_level = Some("off".to_owned());
+        let mut config = Configuration {
+            log_level: Some("off".to_owned()),
+            ..Default::default()
+        };
 
         // Ephemeral socket address
         let port = ephemeral_random_port();

tests/udp.rs

@@ -28,8 +28,10 @@ mod udp_tracker_server {
     use crate::common::ephemeral_random_port;
 
     fn tracker_configuration() -> Arc<Configuration> {
-        let mut config = Configuration::default();
-        config.log_level = Some("off".to_owned());
+        let mut config = Configuration {
+            log_level: Some("off".to_owned()),
+            ..Default::default()
+        };
 
         // Ephemeral socket address
         let port = ephemeral_random_port();
@@ -181,7 +183,7 @@ mod udp_tracker_server {
 
     /// Generates the source address for the UDP client
     fn source_address(port: u16) -> String {
-        format!("127.0.0.1:{}", port)
+        format!("127.0.0.1:{port}")
     }
 
     fn is_error_response(response: &Response, error_message: &str) -> bool {