diff --git a/examples/barebones-with-extra/src/lib.rs b/examples/barebones-with-extra/src/lib.rs
index 35b0bfe..8d075e1 100644
--- a/examples/barebones-with-extra/src/lib.rs
+++ b/examples/barebones-with-extra/src/lib.rs
@@ -17,8 +17,8 @@ impl Program for BarebonesWithExtra {
     /// This is the only function required by the program runtime. `signature_request` is the preimage of the curve element to be
     /// signed, eg. RLP-serialized Ethereum transaction request, raw x86_64 executable, etc.
     fn evaluate(signature_request: InitialState) -> Result<(), Error> {
-        let InitialState { preimage, extra} = signature_request;
-        
+        let InitialState { preimage, extra } = signature_request;
+
         // our constraint just checks that the length of the signature request is greater than 10
         if preimage.len() < 10 {
             return Err(Error::Evaluation(
@@ -27,7 +27,9 @@ impl Program for BarebonesWithExtra {
         }
 
         // Just check and make sure the extra field is not empty.
-        extra.ok_or(Error::Evaluation("This program requires that `extra` be `Some`.".to_string()))?;
+        extra.ok_or(Error::Evaluation(
+            "This program requires that `extra` be `Some`.".to_string(),
+        ))?;
 
         Ok(())
     }
@@ -45,7 +47,7 @@ mod tests {
     fn test_preimage_length_is_valid() {
         let signature_request = InitialState {
             preimage: "some_data_longer_than_10_bytes".to_string().into_bytes(),
-            extra: Some(vec![0x00]) 
+            extra: Some(vec![0x00]),
         };
 
         assert!(BarebonesWithExtra::evaluate(signature_request).is_ok());
@@ -56,7 +58,7 @@ mod tests {
         let signature_request = InitialState {
             // should error since preimage is less than 10 bytes
             preimage: "under10".to_string().into_bytes(),
-            extra: Some(vec![0x00]) 
+            extra: Some(vec![0x00]),
         };
 
         assert!(BarebonesWithExtra::evaluate(signature_request).is_err());
@@ -67,10 +69,9 @@ mod tests {
         let signature_request = InitialState {
             preimage: "some_data_longer_than_10_bytes".to_string().into_bytes(),
             // should error since extra field is None
-            extra: None
+            extra: None,
         };
 
         assert!(BarebonesWithExtra::evaluate(signature_request).is_err());
     }
-
 }
diff --git a/examples/barebones/src/lib.rs b/examples/barebones/src/lib.rs
index aa6c918..9687012 100644
--- a/examples/barebones/src/lib.rs
+++ b/examples/barebones/src/lib.rs
@@ -41,7 +41,7 @@ mod tests {
     fn test_should_sign() {
         let signature_request = InitialState {
             preimage: "some_data_longer_than_10_bytes".to_string().into_bytes(),
-            extra: None
+            extra: None,
         };
 
         assert!(BarebonesProgram::evaluate(signature_request).is_ok());
@@ -52,7 +52,7 @@ mod tests {
         // data being checked is under 10 bytes in length
         let signature_request = InitialState {
             preimage: "under10".to_string().into_bytes(),
-            extra: None
+            extra: None,
         };
 
         assert!(BarebonesProgram::evaluate(signature_request).is_err());
diff --git a/examples/risczero-zkvm-verification/src/lib.rs b/examples/risczero-zkvm-verification/src/lib.rs
index fa8f7c6..1f28947 100644
--- a/examples/risczero-zkvm-verification/src/lib.rs
+++ b/examples/risczero-zkvm-verification/src/lib.rs
@@ -18,13 +18,22 @@ pub struct ZkVmVerificationProgram;
 
 impl Program for ZkVmVerificationProgram {
     fn evaluate(signature_request: InitialState) -> Result<(), Error> {
-        let image_id: [u32; 8] = bincode::deserialize(&signature_request.preimage)
-            .map_err(|_| Error::InvalidTransactionRequest("Could not parse image_id".to_string()))?;
+        let image_id: [u32; 8] =
+            bincode::deserialize(&signature_request.preimage).map_err(|_| {
+                Error::InvalidTransactionRequest("Could not parse image_id".to_string())
+            })?;
 
         let receipt: Receipt = match signature_request.extra {
-            Some(serialized_receipt) => bincode::deserialize(&serialized_receipt)
-                .map_err(|_| Error::InvalidTransactionRequest("Could not parse receipt".to_string()))?,
-            None => return Err(Error::InvalidTransactionRequest("No receipt provided".to_string())),
+            Some(serialized_receipt) => {
+                bincode::deserialize(&serialized_receipt).map_err(|_| {
+                    Error::InvalidTransactionRequest("Could not parse receipt".to_string())
+                })?
+            }
+            None => {
+                return Err(Error::InvalidTransactionRequest(
+                    "No receipt provided".to_string(),
+                ))
+            }
         };
 
         receipt
@@ -77,7 +86,7 @@ mod tests {
     fn test_should_pass_valid_receipt_and_image_pair() {
         let signature_request = InitialState {
             preimage: bincode::serialize(&read_test_image_id()).unwrap(),
-            extra: Some(bincode::serialize(&read_test_receipt()).unwrap())
+            extra: Some(bincode::serialize(&read_test_receipt()).unwrap()),
         };
 
         assert!(ZkVmVerificationProgram::evaluate(signature_request).is_ok());
@@ -87,7 +96,7 @@ mod tests {
     fn test_should_error_with_incorrect_image_id_for_receipt_image_pair() {
         let signature_request = InitialState {
             preimage: bincode::serialize(&read_erronous_test_image_id()).unwrap(),
-            extra: Some(bincode::serialize(&read_test_receipt()).unwrap())
+            extra: Some(bincode::serialize(&read_test_receipt()).unwrap()),
         };
 
         assert!(ZkVmVerificationProgram::evaluate(signature_request).is_err());
diff --git a/examples/siwe/src/lib.rs b/examples/siwe/src/lib.rs
index c72b58e..a4353b6 100644
--- a/examples/siwe/src/lib.rs
+++ b/examples/siwe/src/lib.rs
@@ -60,7 +60,7 @@ Nonce: oNCEHm5jzQU2WvuBB
 Issued At: 2022-01-28T23:28:16.013Z"
                 .to_string()
                 .into_bytes(),
-            extra: None
+            extra: None,
         };
 
         assert!(Siwe::evaluate(signature_request).is_ok());
@@ -81,7 +81,7 @@ Nonce: oNCEHm5jzQU2WvuBB
 Issued At: 2022-01-28T23:28:16.013Z"
                 .to_string()
                 .into_bytes(),
-            extra: None
+            extra: None,
         };
 
         assert!(Siwe::evaluate(signature_request).is_err());
@@ -102,7 +102,7 @@ Nonce: oNCEHm5jzQU2WvuBB
 Issued At: 2022-01-28T23:28:16.013Z"
                 .to_string()
                 .into_bytes(),
-            extra: None
+            extra: None,
         };
 
         assert!(Siwe::evaluate(signature_request).is_err());
diff --git a/runtime/tests/runtime.rs b/runtime/tests/runtime.rs
index 9d9859d..0bc3ca8 100644
--- a/runtime/tests/runtime.rs
+++ b/runtime/tests/runtime.rs
@@ -12,7 +12,7 @@ fn test_barebones_component() {
     let longer_than_10 = "asdfasdfasdfasdf".to_string();
     let initial_state = InitialState {
         preimage: longer_than_10.into_bytes(),
-        extra: None
+        extra: None,
     };
 
     let res = runtime.evaluate(BAREBONES_COMPONENT_WASM, &initial_state);
@@ -27,7 +27,7 @@ fn test_barebones_component_fails_with_data_length_less_than_10() {
     let shorter_than_10 = "asdf".to_string();
     let initial_state = InitialState {
         preimage: shorter_than_10.into_bytes(),
-        extra: None
+        extra: None,
     };
 
     let res = runtime.evaluate(BAREBONES_COMPONENT_WASM, &initial_state);