diff --git a/eigentrust-zk/src/circuits/dynamic_sets/mod.rs b/eigentrust-zk/src/circuits/dynamic_sets/mod.rs
index 720802d9..73b2a594 100644
--- a/eigentrust-zk/src/circuits/dynamic_sets/mod.rs
+++ b/eigentrust-zk/src/circuits/dynamic_sets/mod.rs
@@ -138,7 +138,7 @@ where
 			let mut s_inv_row = Vec::new();
 			for j in 0..NUM_NEIGHBOURS {
 				//
-				// NOTE: Current circuit impl assumes that the "attestations" are full, even including self-attestation. 
+				// NOTE: Current circuit impl assumes that the "attestations" are full, even including self-attestation.
 				// 		 Should be fixed later.
 				//
 				let att = attestations[i][j].clone().unwrap();
@@ -160,15 +160,15 @@ where
 			unassigned_msg_hashes.push(msg_hashes_row);
 			unassigned_s_invs.push(s_inv_row);
 
-			// 
+			//
 			// TODO: Update/remove this concept of "default pubkey" in the future.
 			//  This "default pubkey" can cause confusion & unexpected issues.
-			// 
+			//
 			//	Here, if the pubkey is not given (None), the "default" pubkey is added automatically.
-			//  This means that if there is only 1 real pubkey, 
+			//  This means that if there is only 1 real pubkey,
 			//  the "unassigned_pks" would include NUM_NEIGHBORS pubkeys with default pubkey.
-			// 
-			//  Example: 
+			//
+			//  Example:
 			// 		pks 			= [	Some(pk1), Some(pk2), 	None, 		None		]
 			//  	unassigned_pks 	= [		pk1, 	pk2, 		default_pk, default_pk	]
 			//
diff --git a/eigentrust/src/lib.rs b/eigentrust/src/lib.rs
index 147d79fe..9065116f 100644
--- a/eigentrust/src/lib.rs
+++ b/eigentrust/src/lib.rs
@@ -409,9 +409,9 @@ impl Client {
 			//
 			// TODO: Remove the following patch in the future.
 			//
-			//	In real world scenario, the address(pubkey) does not give attestation itself, 
+			//	In real world scenario, the address(pubkey) does not give attestation itself,
 			//	which is equal to "attestation_matrix[origin_index][origin_index] = None".
-			//  But, the current EigenTrust circuit impl includes the check of 
+			//  But, the current EigenTrust circuit impl includes the check of
 			//		"address_set[i] == attestaions[i][i].about".
 			//  Hence, we add the self-attestation here, for temporary patch.
 			//
@@ -507,7 +507,7 @@ impl Client {
 			|| {
 				EigenError::ValidationError(format!(
 					"Participant {} not found",
-					participant_address.to_string()
+					participant_address
 				))
 			},
 		)?;