diff --git a/src/dnslib.rs b/src/dnslib.rs
index 93345c8..8e4dd9f 100644
--- a/src/dnslib.rs
+++ b/src/dnslib.rs
@@ -14,6 +14,7 @@ use {
     },
 };
 
+#[must_use]
 pub fn return_tokio_asyncresolver(
     nameserver_ips: HashSet<String>,
     options: ResolverOpts,
@@ -92,7 +93,7 @@ pub async fn return_hosts_data(options: &LibOptions) -> HashMap<String, DomainDa
                 if options.show_ip_address && !domain_data.is_wildcard {
                     println!("{};{:?}", host, domain_data.ipv4_addresses);
                 } else if !domain_data.is_wildcard {
-                    println!("{}", host)
+                    println!("{host}");
                 }
             }
 
diff --git a/src/main.rs b/src/main.rs
index e785040..980a492 100644
--- a/src/main.rs
+++ b/src/main.rs
@@ -146,7 +146,7 @@ async fn main() -> Result<(), Box<dyn std::error::Error>> {
         wildcard_ips = utils::detect_wildcards(&domain, &trustable_resolver, quiet_flag).await;
         buffer
             .lines()
-            .map(|word| format!("{}.{}", word, domain))
+            .map(|word| format!("{word}.{domain}"))
             .collect()
     } else {
         buffer.lines().map(str::to_owned).collect()
diff --git a/src/structs.rs b/src/structs.rs
index f408081..3da267b 100644
--- a/src/structs.rs
+++ b/src/structs.rs
@@ -6,7 +6,7 @@ use {
     },
 };
 
-#[derive(Clone, Debug)]
+#[derive(Clone, Debug, Default)]
 pub struct DomainData {
     pub ipv4_addresses: HashSet<String>,
     pub ipv6_addresses: HashSet<String>,
@@ -14,17 +14,6 @@ pub struct DomainData {
     pub is_wildcard: bool,
 }
 
-impl Default for DomainData {
-    fn default() -> Self {
-        DomainData {
-            ipv4_addresses: HashSet::new(),
-            ipv6_addresses: HashSet::new(),
-            cname: String::from(""),
-            is_wildcard: false,
-        }
-    }
-}
-
 #[derive(Clone, Debug)]
 pub struct LibOptions {
     pub hosts: HashSet<String>,
diff --git a/src/utils.rs b/src/utils.rs
index 1e9df99..e6b3a31 100644
--- a/src/utils.rs
+++ b/src/utils.rs
@@ -15,7 +15,7 @@ pub async fn return_file_lines(file: String) -> HashSet<String> {
     let mut f = match File::open(&file).await {
         Ok(file) => file,
         Err(e) => {
-            eprintln!("Error opening resolvers file. Error: {}", e);
+            eprintln!("Error opening resolvers file. Error: {e}");
             std::process::exit(1)
         }
     };
@@ -25,7 +25,7 @@ pub async fn return_file_lines(file: String) -> HashSet<String> {
         Ok(a) => a,
         _ => unreachable!("Error reading to string."),
     };
-    buffer.lines().map(|f| format!("{}:53", f)).collect()
+    buffer.lines().map(|f| format!("{f}:53")).collect()
 }
 
 pub async fn detect_wildcards(
@@ -34,7 +34,7 @@ pub async fn detect_wildcards(
     quiet_flag: bool,
 ) -> HashSet<String> {
     if !quiet_flag {
-        println!("Running wildcards detection for {}...\n", target)
+        println!("Running wildcards detection for {target}...\n");
     }
     let mut generated_wilcards: HashSet<String> = HashSet::new();
     for _ in 1..20 {
@@ -69,13 +69,10 @@ pub async fn detect_wildcards(
     generated_wilcards.retain(|ip| ip.parse::<Ipv4Addr>().is_ok());
 
     if !generated_wilcards.is_empty() && !quiet_flag {
-        println!(
-            "Wilcards detected for {} and wildcard's IP saved for furter work.",
-            target
-        );
-        println!("Wilcard IPs: {:?}\n", generated_wilcards)
+        println!("Wilcards detected for {target} and wildcard's IP saved for furter work.");
+        println!("Wilcard IPs: {generated_wilcards:?}\n");
     } else if !quiet_flag {
-        println!("No wilcards detected for {}, nice!\n", target)
+        println!("No wilcards detected for {target}, nice!\n");
     }
     generated_wilcards
 }