diff --git a/ethcore/src/account.rs b/ethcore/src/account.rs
index 0d535f7ce..24386e839 100644
--- a/ethcore/src/account.rs
+++ b/ethcore/src/account.rs
@@ -35,6 +35,7 @@ impl Account {
 	}
 
 	/// General constructor.
+	#[allow(dead_code)]	// Used only in test code for now.
 	pub fn from_pod(pod: PodAccount) -> Account {
 		Account {
 			balance: pod.balance,
@@ -110,6 +111,7 @@ impl Account {
 	pub fn nonce(&self) -> &U256 { &self.nonce }
 
 	/// return the code hash associated with this account.
+	#[allow(dead_code)]	// Used only in test code for now.
 	pub fn code_hash(&self) -> H256 {
 		self.code_hash.clone().unwrap_or(SHA3_EMPTY)
 	}
@@ -126,6 +128,7 @@ impl Account {
 	}
 
 	/// Provide a byte array which hashes to the `code_hash`. returns the hash as a result.
+	#[allow(dead_code)]	// Used only in test code for now.
 	pub fn note_code(&mut self, code: Bytes) -> Result<(), H256> {
 		let h = code.sha3();
 		match self.code_hash {
@@ -159,18 +162,14 @@ impl Account {
 			}
 	}
 
-	/// return the storage root associated with this account.
-	pub fn base_root(&self) -> &H256 { &self.storage_root }
-
 	/// Determine whether there are any un-`commit()`-ed storage-setting operations.
+	#[allow(dead_code)]
 	pub fn storage_is_clean(&self) -> bool { self.storage_overlay.borrow().iter().find(|&(_, &(f, _))| f == Filth::Dirty).is_none() }
 	
 	/// return the storage root associated with this account or None if it has been altered via the overlay.
+	#[allow(dead_code)]
 	pub fn storage_root(&self) -> Option<&H256> { if self.storage_is_clean() {Some(&self.storage_root)} else {None} }
 	
-	/// return the storage root associated with this account or None if it has been altered via the overlay.
-	pub fn recent_storage_root(&self) -> &H256 { &self.storage_root }
-	
 	/// return the storage overlay.
 	pub fn storage_overlay(&self) -> Ref<HashMap<H256, (Filth, H256)>> { self.storage_overlay.borrow() }
 
diff --git a/ethcore/src/account_diff.rs b/ethcore/src/account_diff.rs
index 411150739..72c331959 100644
--- a/ethcore/src/account_diff.rs
+++ b/ethcore/src/account_diff.rs
@@ -49,8 +49,9 @@ impl AccountDiff {
 		}
 	}
 
-	/// Determine difference between two optionally existance `Account`s. Returns None
+	/// Determine difference between two optionally existant `Account`s. Returns None
 	/// if they are the same.
+	#[allow(dead_code)]	// Used only in test code for now.
 	pub fn diff_pod(pre: Option<&PodAccount>, post: Option<&PodAccount>) -> Option<AccountDiff> {
 		match (pre, post) {
 			(None, Some(x)) => Some(AccountDiff {
diff --git a/ethcore/src/state.rs b/ethcore/src/state.rs
index 3c12804b9..d285f0e0d 100644
--- a/ethcore/src/state.rs
+++ b/ethcore/src/state.rs
@@ -2,7 +2,6 @@ use common::*;
 use engine::Engine;
 use executive::Executive;
 use pod_account::*;
-use pod_state::PodState;
 //use state_diff::*;	// TODO: uncomment once to_pod() works correctly.
 
 /// Result type for the execution ("application") of a transaction.
@@ -194,6 +193,7 @@ impl State {
 	}
 
 	/// Populate a PodAccount map from this state.
+	#[allow(dead_code)]	// Used only in test code for now.
 	pub fn to_hashmap_pod(&self) -> HashMap<Address, PodAccount> {
 		// TODO: handle database rather than just the cache.
 		self.cache.borrow().iter().fold(HashMap::new(), |mut m, (add, opt)| {
@@ -273,6 +273,7 @@ use util::rlp::*;
 use util::uint::*;
 use account::*;
 use tests::helpers::*;
+use pod_state::PodState;
 
 #[test]
 fn code_from_database() {
diff --git a/ethcore/src/state_diff.rs b/ethcore/src/state_diff.rs
index 1caa62ef1..b3bc4b4e5 100644
--- a/ethcore/src/state_diff.rs
+++ b/ethcore/src/state_diff.rs
@@ -9,6 +9,7 @@ pub struct StateDiff (BTreeMap<Address, AccountDiff>);
 
 impl StateDiff {
 	/// Calculate and return diff between `pre` state and `post` state.
+	#[allow(dead_code)]	// Used only in test code for now.
 	pub fn diff_pod(pre: &PodState, post: &PodState) -> StateDiff {
 		StateDiff(pre.get().keys().merge(post.get().keys()).filter_map(|acc| AccountDiff::diff_pod(pre.get().get(acc), post.get().get(acc)).map(|d|(acc.clone(), d))).collect())
 	}
diff --git a/ethcore/src/transaction.rs b/ethcore/src/transaction.rs
index bc777d7ae..3b9d0e162 100644
--- a/ethcore/src/transaction.rs
+++ b/ethcore/src/transaction.rs
@@ -230,6 +230,7 @@ impl Transaction {
 	}
 
 	/// Do basic validation, checking for valid signature and minimum gas,
+	#[allow(dead_code)]	// Used only in tests. TODO: consider use in block validation.
 	pub fn validate(self, schedule: &Schedule, require_low: bool) -> Result<Transaction, Error> {
 		if require_low && !ec::is_low_s(&self.s) {
 			return Err(Error::Util(UtilError::Crypto(CryptoError::InvalidSignature)));