minor: Remove unused warnings

src/db/group.rs

@@ -1,5 +1,7 @@
 #[derive(Clone, Debug)]
 pub struct Group {
+    #[expect(unused)]
     name: String,
+    #[expect(unused)]
     domain: String,
 }

src/db/memory.rs

@@ -6,6 +6,7 @@ use crate::db::{Database, DatabaseInterface, Group, User, UserRef};
 #[derive(Clone, Debug, Default)]
 pub struct MemoryDatabase {
     pub users: Vec<User>,
+    #[expect(unused)]
     pub groups: Vec<Group>,
 }
 

src/ldap/dn.rs

@@ -137,6 +137,7 @@ impl Dn {
     /// Overrides the DN hostname (`dc` fields) with the provided host.
     ///
     /// When no `dc` fields are present, they are only added when `force` is true.
+    #[expect(unused)]
     pub fn set_hostname(&mut self, host: &str, force: bool) {
         let domain_components: Vec<String> =
             host.split('.').map(|x| dn_escape(x).to_string()).collect();

src/ldap/op/search.rs

@@ -39,7 +39,7 @@ impl LdapReturnError for InvalidSearchDn {
 }
 
 #[derive(Clone, Debug)]
-pub struct SearchDn(Dn);
+pub struct SearchDn(#[expect(unused)] Dn);
 
 impl SearchDn {
     pub fn from_dn_str(input: &str) -> Result<Self, InvalidSearchDn> {