fixes for nightly clippy (#1618)

bridges/relays/utils/src/initialize.rs

@@ -68,7 +68,7 @@ pub fn initialize_logger(with_timestamp: bool) {
 			let log_level = color_level(record.level());
 			let log_target = color_target(record.target());
 
-			writeln!(buf, "{}{} {} {}", loop_name_prefix(), log_level, log_target, record.args(),)
+			writeln!(buf, "{}{log_level} {log_target} {}", loop_name_prefix(), record.args(),)
 		});
 	}
 
@@ -92,7 +92,7 @@ fn loop_name_prefix() -> String {
 			if loop_name.is_empty() {
 				String::new()
 			} else {
-				format!("[{}] ", loop_name)
+				format!("[{loop_name}] ")
 			}
 		})
 		.unwrap_or_else(|_| String::new())
@@ -105,8 +105,8 @@ enum Either<A, B> {
 impl<A: Display, B: Display> Display for Either<A, B> {
 	fn fmt(&self, fmt: &mut std::fmt::Formatter) -> std::fmt::Result {
 		match self {
-			Self::Left(a) => write!(fmt, "{}", a),
-			Self::Right(b) => write!(fmt, "{}", b),
+			Self::Left(a) => write!(fmt, "{a}"),
+			Self::Right(b) => write!(fmt, "{b}"),
 		}
 	}
 }