diff --git a/core/src/blocktree_processor.rs b/core/src/blocktree_processor.rs
index bec45d4f0..2775faa8d 100644
--- a/core/src/blocktree_processor.rs
+++ b/core/src/blocktree_processor.rs
@@ -121,7 +121,7 @@ pub fn process_blocktree(
         let meta = blocktree
             .meta(slot)
             .map_err(|err| {
-                eprintln!("Failed to load meta for slot {}: {:?}", slot, err);
+                warn!("Failed to load meta for slot {}: {:?}", slot, err);
                 BankError::LedgerVerificationFailed
             })?
             .unwrap();
@@ -194,7 +194,7 @@ pub fn process_blocktree(
             let next_meta = blocktree
                 .meta(next_slot)
                 .map_err(|err| {
-                    eprintln!("Failed to load meta for slot {}: {:?}", slot, err);
+                    warn!("Failed to load meta for slot {}: {:?}", slot, err);
                     BankError::LedgerVerificationFailed
                 })?
                 .unwrap();
diff --git a/drone/src/bin/drone.rs b/drone/src/bin/drone.rs
index 595102d87..bea6013e2 100644
--- a/drone/src/bin/drone.rs
+++ b/drone/src/bin/drone.rs
@@ -77,7 +77,7 @@ fn main() -> Result<(), Box<error::Error>> {
     info!("Drone started. Listening on: {}", drone_addr);
     let done = socket
         .incoming()
-        .map_err(|e| println!("failed to accept socket; error = {:?}", e))
+        .map_err(|e| warn!("failed to accept socket; error = {:?}", e))
         .for_each(move |socket| {
             let drone2 = drone.clone();
             let framed = BytesCodec::new().framed(socket);
diff --git a/runtime/benches/bloom.rs b/runtime/benches/bloom.rs
index f3d21e244..66b0f4fee 100644
--- a/runtime/benches/bloom.rs
+++ b/runtime/benches/bloom.rs
@@ -45,7 +45,7 @@ fn bench_sigs_bloom(bencher: &mut Bencher) {
     // 1.0E-8 false positive rate
     // https://hur.st/bloomfilter/?n=1000000&p=1.0E-8&m=&k=
     let blockhash = hash(Hash::default().as_ref());
-    //    eprintln!("blockhash = {:?}", blockhash);
+    //    info!("blockhash = {:?}", blockhash);
     let keys = (0..27)
         .into_iter()
         .map(|i| blockhash.hash_at_index(i))
@@ -77,7 +77,7 @@ fn bench_sigs_bloom(bencher: &mut Bencher) {
 fn bench_sigs_hashmap(bencher: &mut Bencher) {
     // same structure as above, new
     let blockhash = hash(Hash::default().as_ref());
-    //    eprintln!("blockhash = {:?}", blockhash);
+    //    info!("blockhash = {:?}", blockhash);
     let mut sigs: HashSet<Signature> = HashSet::new();
 
     let mut id = blockhash;