- Only commit successfully executed transactions' cost to cost_tracker;

- In-fly transactions are pended in cost_tracker until being committed
  or cancelled;

runtime/src/accounts.rs

@@ -1069,14 +1069,14 @@ impl Accounts {
     pub fn lock_accounts_with_results<'a>(
         &self,
         txs: impl Iterator<Item = &'a SanitizedTransaction>,
-        results: impl Iterator<Item = Result<()>>,
+        results: impl Iterator<Item = &'a Result<()>>,
         feature_set: &FeatureSet,
     ) -> Vec<Result<()>> {
         let tx_account_locks_results: Vec<Result<_>> = txs
             .zip(results)
             .map(|(tx, result)| match result {
                 Ok(()) => tx.get_account_locks(feature_set),
-                Err(err) => Err(err),
+                Err(err) => Err(err.clone()),
             })
             .collect();
         self.lock_accounts_inner(tx_account_locks_results)
@@ -2831,7 +2831,7 @@ mod tests {
 
         let results = accounts.lock_accounts_with_results(
             txs.iter(),
-            qos_results.into_iter(),
+            qos_results.iter(),
             &FeatureSet::all_enabled(),
         );