diff --git a/crates/cli/src/parse/blocks.rs b/crates/cli/src/parse/blocks.rs
index a9e75df2..fe501a62 100644
--- a/crates/cli/src/parse/blocks.rs
+++ b/crates/cli/src/parse/blocks.rs
@@ -20,7 +20,7 @@ pub(crate) async fn parse_blocks(
         for path in files {
             let column = if path.contains(':') {
                 path.split(':')
-                    .last()
+                    .next_back()
                     .ok_or(ParseError::ParseError("could not parse txs path column".to_string()))?
             } else {
                 "block_number"
diff --git a/crates/cli/src/parse/timestamps.rs b/crates/cli/src/parse/timestamps.rs
index 35b54ab8..835ab1f8 100644
--- a/crates/cli/src/parse/timestamps.rs
+++ b/crates/cli/src/parse/timestamps.rs
@@ -24,7 +24,7 @@ pub(crate) async fn parse_timestamps(
         for path in files {
             let column = if path.contains(':') {
                 path.split(':')
-                    .last()
+                    .next_back()
                     .ok_or(ParseError::ParseError("could not parse txs path column".to_string()))?
             } else {
                 "timestamp"
diff --git a/crates/freeze/src/datasets/address_appearances.rs b/crates/freeze/src/datasets/address_appearances.rs
index c3600105..59f568dd 100644
--- a/crates/freeze/src/datasets/address_appearances.rs
+++ b/crates/freeze/src/datasets/address_appearances.rs
@@ -114,7 +114,7 @@ impl CollectByTransaction for AddressAppearances {
 fn name(log: &Log) -> Option<&'static str> {
     let event = log.topic0().unwrap();
     if event == *ERC20::Transfer::SIGNATURE_HASH {
-        if log.data().data.len() > 0 {
+        if !log.data().data.is_empty() {
             Some("erc20_transfer")
         } else if log.topics().len() == 4 {
             Some("erc721_transfer")
diff --git a/crates/freeze/src/datasets/erc721_transfers.rs b/crates/freeze/src/datasets/erc721_transfers.rs
index 065dc176..8d3a4a2c 100644
--- a/crates/freeze/src/datasets/erc721_transfers.rs
+++ b/crates/freeze/src/datasets/erc721_transfers.rs
@@ -71,7 +71,7 @@ impl CollectByBlock for Erc721Transfers {
         let filter = Filter { topics, ..request.ethers_log_filter()? };
         let logs = source.get_logs(&filter).await?;
 
-        Ok(logs.into_iter().filter(|x| x.topics().len() == 4 && x.data().data.len() == 0).collect())
+        Ok(logs.into_iter().filter(|x| x.topics().len() == 4 && x.data().data.is_empty()).collect())
     }
 
     fn transform(response: Self::Response, columns: &mut Self, query: &Arc<Query>) -> R<()> {
@@ -97,7 +97,7 @@ impl CollectByTransaction for Erc721Transfers {
 
 fn is_erc721_transfer(log: &Log) -> bool {
     log.topics().len() == 4 &&
-        log.data().data.len() == 0 &&
+        log.data().data.is_empty() &&
         log.topics()[0] == ERC721::Transfer::SIGNATURE_HASH
 }