clippy: Automated fixes for Rust 1.77.0 (#390)

accounts-db/src/accounts_db.rs

@@ -12102,7 +12102,7 @@ pub mod tests {
         db.print_accounts_stats("pre");
 
         let slots: HashSet<Slot> = vec![1].into_iter().collect();
-        let purge_keys = vec![(key1, slots)];
+        let purge_keys = [(key1, slots)];
         let _ = db.purge_keys_exact(purge_keys.iter());
 
         let account2 = AccountSharedData::new(3, 0, &key);

accounts-db/src/accounts_hash.rs

@@ -1609,7 +1609,7 @@ mod tests {
 
     #[test]
     fn test_accountsdb_de_dup_accounts_zero_chunks() {
-        let vec = vec![vec![CalculateHashIntermediate {
+        let vec = [vec![CalculateHashIntermediate {
             lamports: 1,
             hash: AccountHash(Hash::default()),
             pubkey: Pubkey::default(),

accounts-db/src/accounts_index.rs

@@ -120,7 +120,7 @@ impl ScanConfig {
     /// use existing 'abort' if available, otherwise allocate one
     pub fn recreate_with_abort(&self) -> Self {
         ScanConfig {
-            abort: Some(self.abort.as_ref().map(Arc::clone).unwrap_or_default()),
+            abort: Some(self.abort.clone().unwrap_or_default()),
             collect_all_unsorted: self.collect_all_unsorted,
         }
     }

accounts-db/src/accounts_index/in_mem_accounts_index.rs

@@ -175,7 +175,7 @@ impl<T: IndexValue, U: DiskIndexValue + From<T> + Into<T>> InMemAccountsIndex<T,
                 .disk
                 .as_ref()
                 .map(|disk| disk.get_bucket_from_index(bin))
-                .map(Arc::clone),
+                .cloned(),
             cache_ranges_held: CacheRangesHeld::default(),
             stop_evictions_changes: AtomicU64::default(),
             stop_evictions: AtomicU64::default(),
@@ -346,7 +346,7 @@ impl<T: IndexValue, U: DiskIndexValue + From<T> + Into<T>> InMemAccountsIndex<T,
     ) -> RT {
         // SAFETY: Since we're passing the entry Arc clone to `callback`, we must
         // also add the entry to the in-mem cache.
-        self.get_internal(pubkey, |entry| (true, callback(entry.map(Arc::clone))))
+        self.get_internal(pubkey, |entry| (true, callback(entry.cloned())))
     }
 
     /// lookup 'pubkey' in index (in_mem or disk).

core/src/repair/repair_service.rs

@@ -872,7 +872,7 @@ impl RepairService {
             ServeRepair::repair_proto_to_bytes(&request_proto, &identity_keypair).unwrap();
 
         // Prepare packet batch to send
-        let reqs = vec![(packet_buf, address)];
+        let reqs = [(packet_buf, address)];
 
         // Send packet batch
         match batch_send(repair_socket, &reqs[..]) {

entry/src/entry.rs

@@ -1104,7 +1104,7 @@ mod tests {
         let tx1 = system_transaction::transfer(&keypair, &keypair.pubkey(), 1, zero);
 
         // Verify entry with 2 transactions
-        let mut e0 = vec![Entry::new(&zero, 0, vec![tx0, tx1])];
+        let mut e0 = [Entry::new(&zero, 0, vec![tx0, tx1])];
         assert!(e0.verify(&zero));
 
         // Clear signature of the first transaction, see that it does not verify
@@ -1124,7 +1124,7 @@ mod tests {
         assert!(!e0.verify(&zero));
 
         // Pass an entry with no transactions
-        let e0 = vec![Entry::new(&zero, 0, vec![])];
+        let e0 = [Entry::new(&zero, 0, vec![])];
         assert!(e0.verify(&zero));
     }
 

program-test/src/lib.rs

@@ -87,7 +87,7 @@ pub enum ProgramTestError {
 }
 
 thread_local! {
-    static INVOKE_CONTEXT: RefCell<Option<usize>> = RefCell::new(None);
+    static INVOKE_CONTEXT: RefCell<Option<usize>> = const { RefCell::new(None) };
 }
 fn set_invoke_context(new: &mut InvokeContext) {
     INVOKE_CONTEXT

rpc-client-nonce-utils/src/nonblocking/mod.rs

@@ -228,7 +228,7 @@ pub fn data_from_account<T: ReadableAccount + StateMut<Versions>>(
     account: &T,
 ) -> Result<Data, Error> {
     account_identity_ok(account)?;
-    state_from_account(account).and_then(|ref s| data_from_state(s).map(|d| d.clone()))
+    state_from_account(account).and_then(|ref s| data_from_state(s).cloned())
 }
 
 /// Get the nonce data from its [`State`] value.

rpc/src/rpc_subscriptions.rs

@@ -266,7 +266,7 @@ struct RpcNotifier {
 }
 
 thread_local! {
-    static RPC_NOTIFIER_BUF: RefCell<Vec<u8>> = RefCell::new(Vec::new());
+    static RPC_NOTIFIER_BUF: RefCell<Vec<u8>> = const { RefCell::new(Vec::new()) };
 }
 
 #[derive(Debug, Serialize)]

sdk/program/src/message/account_keys.rs

@@ -171,7 +171,7 @@ mod tests {
         };
         let account_keys = AccountKeys::new(&static_keys, Some(&dynamic_keys));
 
-        let expected_segments = vec![
+        let expected_segments = [
             vec![keys[0], keys[1], keys[2]],
             vec![keys[3], keys[4]],
             vec![keys[5]],