diff --git a/lib/src/account_write_filter.rs b/lib/src/account_write_filter.rs
index 13efaf9..c58d7c8 100644
--- a/lib/src/account_write_filter.rs
+++ b/lib/src/account_write_filter.rs
@@ -6,7 +6,6 @@ use crate::{
 
 use anchor_lang::prelude::Pubkey;
 use async_trait::async_trait;
-use log::*;
 use solana_sdk::{account::WritableAccount, stake_history::Epoch};
 use std::{
     collections::{BTreeSet, HashMap},
@@ -119,7 +118,7 @@ pub fn init(
                                         },
                                     );
                                 }
-                                Err(skip_reason) => {
+                                Err(_skip_reason) => {
                                     // todo: metrics
                                 }
                             }
diff --git a/service-mango-crank/src/blockhash_poller.rs b/service-mango-crank/src/blockhash_poller.rs
index 84c3f0f..b9c6f9b 100644
--- a/service-mango-crank/src/blockhash_poller.rs
+++ b/service-mango-crank/src/blockhash_poller.rs
@@ -35,7 +35,7 @@ pub async fn init(client: Arc<RpcClient>) -> Arc<RwLock<Hash>> {
     ));
 
     // launch task
-    let join_hdl = {
+    let _join_hdl = {
         // create a thread-local reference to blockhash
         let blockhash_c = blockhash.clone();
         spawn(async move { poll_loop(blockhash_c, client).await })
diff --git a/service-mango-crank/src/mango_v4_perp_crank_sink.rs b/service-mango-crank/src/mango_v4_perp_crank_sink.rs
index 85b700f..6169421 100644
--- a/service-mango-crank/src/mango_v4_perp_crank_sink.rs
+++ b/service-mango-crank/src/mango_v4_perp_crank_sink.rs
@@ -17,7 +17,6 @@ use solana_sdk::{
 };
 
 use bytemuck::cast_ref;
-use mango_v4::state::FillEvent;
 
 use anchor_lang::AccountDeserialize;
 
diff --git a/service-mango-crank/src/transaction_builder.rs b/service-mango-crank/src/transaction_builder.rs
index d4d1984..a3e938b 100644
--- a/service-mango-crank/src/transaction_builder.rs
+++ b/service-mango-crank/src/transaction_builder.rs
@@ -1,35 +1,15 @@
-use bytemuck::cast_ref;
-use mango_v4::state::FillEvent;
-use serum_dex::{instruction::MarketInstruction, state::EventView};
 use solana_geyser_connector_lib::{
     account_write_filter::{self, AccountWriteRoute},
-    chain_data::{AccountData, ChainData, SlotData},
     metrics::Metrics,
-    serum::SerumEventQueueHeader,
     AccountWrite, SlotUpdate,
 };
 
-use anchor_lang::AccountDeserialize;
-use log::*;
-use solana_sdk::{
-    account::{ReadableAccount, WritableAccount},
-    instruction::{AccountMeta, Instruction},
-    pubkey::Pubkey,
-    stake_history::Epoch,
-};
-use std::{
-    borrow::BorrowMut,
-    collections::{BTreeSet, HashMap, HashSet},
-    convert::TryFrom,
-    str::FromStr,
-    sync::Arc,
-    time::{Duration, Instant},
-};
+use solana_sdk::{instruction::Instruction, pubkey::Pubkey};
+use std::{sync::Arc, time::Duration};
 
-use crate::{openbook_crank_sink::OpenbookCrankSink, mango_v4_perp_crank_sink::MangoV4PerpCrankSink};
-
-const MAX_BACKLOG: usize = 2;
-const TIMEOUT_INTERVAL: Duration = Duration::from_millis(400);
+use crate::{
+    mango_v4_perp_crank_sink::MangoV4PerpCrankSink, openbook_crank_sink::OpenbookCrankSink,
+};
 
 pub fn init(
     perp_queue_pks: Vec<(Pubkey, Pubkey)>,
diff --git a/service-mango-crank/src/transaction_sender.rs b/service-mango-crank/src/transaction_sender.rs
index 3471941..fab78ec 100644
--- a/service-mango-crank/src/transaction_sender.rs
+++ b/service-mango-crank/src/transaction_sender.rs
@@ -28,8 +28,7 @@ pub async fn send_loop(
                 *blockhash.read().unwrap(),
             );
             // TODO: collect metrics
-            info!("send tx={:?}", tx.signatures[0]);
-            client.send_transaction_with_config(&tx, cfg).await;
+            info!("send tx={:?} ok={:?}", tx.signatures[0], client.send_transaction_with_config(&tx, cfg).await);
         }
     }
 }
diff --git a/service-mango-fills/src/main.rs b/service-mango-fills/src/main.rs
index 7d187f5..2bd07db 100644
--- a/service-mango-fills/src/main.rs
+++ b/service-mango-fills/src/main.rs
@@ -370,10 +370,7 @@ async fn main() -> anyhow::Result<()> {
         .map(|(_, context)| (context.address, context.market.event_queue))
         .collect();
 
-    let spot_queue_pks: Vec<(Pubkey, Pubkey)> = spot_market_configs
-        .iter()
-        .map(|x| (x.0, x.1.event_queue))
-        .collect();
+
     let a: Vec<(String, String)> = group_context
         .serum3_markets
         .iter()