diff --git a/.gitignore b/.gitignore
index 7a5ef4c..9d46417 100644
--- a/.gitignore
+++ b/.gitignore
@@ -12,4 +12,8 @@ profile.json.gz
 workdir
 
 !/schema.json
-!/dev-genesis.json
\ No newline at end of file
+!/dev-genesis.json
+
+# Ignore all shell scripts except for the `run_tests.sh` script
+*.sh
+!run_tests.sh
\ No newline at end of file
diff --git a/crates/core/src/differential_tests/driver.rs b/crates/core/src/differential_tests/driver.rs
index 9c021d7..cffc74d 100644
--- a/crates/core/src/differential_tests/driver.rs
+++ b/crates/core/src/differential_tests/driver.rs
@@ -359,7 +359,11 @@ where
         Ok(())
     }
 
-    #[instrument(level = "info", skip_all)]
+    #[instrument(
+        level = "info",
+        skip_all,
+        fields(block_number = tracing::field::Empty)
+    )]
     pub async fn execute_function_call(
         &mut self,
         _: &StepPath,
@@ -373,6 +377,7 @@ where
             .handle_function_call_execution(step, deployment_receipts)
             .await
             .context("Failed to handle the function call execution")?;
+        tracing::Span::current().record("block_number", execution_receipt.block_number);
         let tracing_result = self
             .handle_function_call_call_frame_tracing(execution_receipt.transaction_hash)
             .await
@@ -616,8 +621,8 @@ where
         }
 
         // Handling the calldata assertion
-        if let Some(ref expected_calldata) = assertion.return_data {
-            let expected = expected_calldata;
+        if let Some(ref expected_output) = assertion.return_data {
+            let expected = expected_output;
             let actual = &tracing_result.output.as_ref().unwrap_or_default();
             if !expected
                 .is_equivalent(actual, resolver.as_ref(), resolution_context)
@@ -628,9 +633,9 @@ where
                     ?receipt,
                     ?expected,
                     %actual,
-                    "Calldata assertion failed"
+                    "Output assertion failed"
                 );
-                anyhow::bail!("Calldata assertion failed - Expected {expected:?} but got {actual}",);
+                anyhow::bail!("Output assertion failed - Expected {expected:?} but got {actual}",);
             }
         }
 
diff --git a/crates/format/src/steps.rs b/crates/format/src/steps.rs
index 4b1526b..8ed1f21 100644
--- a/crates/format/src/steps.rs
+++ b/crates/format/src/steps.rs
@@ -706,6 +706,7 @@ impl Calldata {
                             .await
                             .context("Failed to resolve calldata item during equivalence check")?;
                         let other = U256::from_be_slice(&other);
+
                         Ok(this == other)
                     })
                     .buffered(0xFF)
@@ -718,7 +719,7 @@ impl Calldata {
 }
 
 impl CalldataItem {
-    #[instrument(level = "info", skip_all, err)]
+    #[instrument(level = "info", skip_all, err(Debug))]
     async fn resolve(
         &self,
         resolver: &(impl ResolverApi + ?Sized),
@@ -906,7 +907,7 @@ impl<T: AsRef<str>> CalldataToken<T> {
                     let block_hash = resolver
                         .block_hash(desired_block_number.into())
                         .await
-                        .context("Failed to resolve block hash for desired block number")?;
+                        .context(format!("Failed to resolve the block hash of block number {desired_block_number}"))?;
 
                     Ok(U256::from_be_bytes(block_hash.0))
                 } else if item == Self::BLOCK_NUMBER_VARIABLE {
diff --git a/crates/node/src/node_implementations/substrate.rs b/crates/node/src/node_implementations/substrate.rs
index 787e6a5..95e144e 100644
--- a/crates/node/src/node_implementations/substrate.rs
+++ b/crates/node/src/node_implementations/substrate.rs
@@ -251,6 +251,10 @@ impl SubstrateNode {
                     .arg(format!("ws://127.0.0.1:{substrate_rpc_port}"))
                     .arg("--rpc-max-connections")
                     .arg(u32::MAX.to_string())
+                    .arg("--index-last-n-blocks")
+                    .arg(1_000u32.to_string())
+                    .arg("--cache-size")
+                    .arg(1_000u32.to_string())
                     .env("RUST_LOG", Self::PROXY_LOG_ENV)
                     .stdout(stdout_file)
                     .stderr(stderr_file);