Resolving Performance Degredation by removing formatted output

programs/stake/src/rewards.rs

@@ -185,17 +185,12 @@ fn calculate_stake_rewards(
 
     let rewards = points
         .checked_mul(u128::from(point_value.rewards))
-        .expect(&format!(
-            "Rewards should fit within u128, inputs were {} and {}",
-            points, point_value.rewards
-        ));
+        .expect("Rewards intermittent calculation should fit within u128");
 
     // The unwrap is safe, as points_value.points is guaranteed to be non zero above.
     // Expect is verifying that the result fits in u64
-    let rewards = u64::try_from(rewards.checked_div(point_value.points).unwrap()).expect(&format!(
-        "Rewards should fit within u64, inputs were {}, {} and {}",
-        points, point_value.rewards, point_value.points
-    ));
+    let rewards = u64::try_from(rewards.checked_div(point_value.points).unwrap())
+        .expect("Rewards should fit within u64");
 
     // don't bother trying to split if fractional lamports got truncated
     if rewards == 0 {
@@ -236,8 +231,7 @@ mod tests {
     use {
         super::*,
         crate::{points::null_tracer, stake_state::new_stake},
-        solana_sdk::{native_token, pubkey::Pubkey},
-        std::u64,
+        solana_sdk::{native_token, pubkey::Pubkey},        
         test_case::test_case,
     };
 
@@ -618,7 +612,7 @@ mod tests {
         );
     }
 
-    #[test_case(u64::MAX, 1_000, u64::MAX => panics "Rewards should fit within u128")]
+    #[test_case(u64::MAX, 1_000, u64::MAX => panics "Rewards intermittent calculation should fit within u128")]
     #[test_case(1, u64::MAX, u64::MAX => panics "Rewards should fit within u64")]
     fn calculate_rewards_tests(stake: u64, rewards: u64, credits: u64) {
         let mut vote_state = VoteState::default();