fix: clippies and rustc warnings for 1.81

src/info.rs

@@ -313,7 +313,7 @@ pub fn proc_get_vshard_config(tier_name: Option<String>) -> Result<RawByteBuf, E
     let node = node::global()?;
     let tier_name = if let Some(tier_name) = tier_name {
         let tier = node.storage.tiers.by_name(&tier_name)?;
-        let Some(tier) = tier else {
+        if tier.is_none() {
             return Err(Error::NoSuchTier(tier_name));
         };
 

src/luamod.rs

@@ -684,8 +684,9 @@ pub(crate) fn setup() {
 
             1. code (optional number), default: 0
         "},
-        tlua::function1(|code: Option<i32>| {
-            crate::tarantool::exit(code.unwrap_or(0))
+        #[allow(clippy::unused_unit)] // Needed to suppress dependency_on_unit_never_type_fallback
+        tlua::function1(|code: Option<i32>| -> () {
+            crate::tarantool::exit(code.unwrap_or(0));
         }),
     );
 

src/pgproto/backend.rs

@@ -294,10 +294,7 @@ impl Backend {
                 self.execute(None, -1)
             };
 
-            simple_query().map_err(|err| {
-                close_unnamed();
-                err
-            })
+            simple_query().inspect_err(|_| close_unnamed())
         };
 
         let result = do_simple_query();
@@ -346,10 +343,7 @@ impl Backend {
             self.execute(None, -1)
         };
 
-        do_execute_query().map_err(|err| {
-            close_unnamed();
-            err
-        })
+        do_execute_query().inspect_err(|_| close_unnamed())
     }
 
     /// Handler for a Describe message.