diff --git a/ethcore/res/ethereum/tests b/ethcore/res/ethereum/tests
index 3116f85a4..f32954b3d 160000
--- a/ethcore/res/ethereum/tests
+++ b/ethcore/res/ethereum/tests
@@ -1 +1 @@
-Subproject commit 3116f85a499ceaf4dfdc46726060fc056e2d7829
+Subproject commit f32954b3ddb5af2dc3dc9ec6d9a28bee848fdf70
diff --git a/ethcore/src/blockchain.rs b/ethcore/src/blockchain.rs
index 9240ff800..2e9a867c4 100644
--- a/ethcore/src/blockchain.rs
+++ b/ethcore/src/blockchain.rs
@@ -696,7 +696,7 @@ mod tests {
 	}
 
 	#[test]
-	#[allow(cyclomatic_complexity)]
+	#[cfg_attr(feature="dev", allow(cyclomatic_complexity))]
 	fn test_small_fork() {
 		let genesis = "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".from_hex().unwrap();
 		let b1 = "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".from_hex().unwrap();
diff --git a/ethcore/src/evm/tests.rs b/ethcore/src/evm/tests.rs
index 02f929192..9d4dd3bc4 100644
--- a/ethcore/src/evm/tests.rs
+++ b/ethcore/src/evm/tests.rs
@@ -25,7 +25,7 @@ struct FakeLogEntry {
 }
 
 #[derive(PartialEq, Eq, Hash, Debug)]
-#[allow(enum_variant_names)] // Common prefix is C ;)
+#[cfg_attr(feature="dev", allow(enum_variant_names))] // Common prefix is C ;)
 enum FakeCallType {
 	CALL, CREATE
 }
diff --git a/util/src/hash.rs b/util/src/hash.rs
index d436c2d81..71c690ef6 100644
--- a/util/src/hash.rs
+++ b/util/src/hash.rs
@@ -635,7 +635,7 @@ mod tests {
 	use std::str::FromStr;
 
 	#[test]
-	#[allow(eq_op)]
+	#[cfg_attr(feature="dev", allow(eq_op))]
 	fn hash() {
 		let h = H64([0x01, 0x23, 0x45, 0x67, 0x89, 0xab, 0xcd, 0xef]);
 		assert_eq!(H64::from_str("0123456789abcdef").unwrap(), h);
diff --git a/util/src/panics.rs b/util/src/panics.rs
index 18ed9ecb1..60d85ef14 100644
--- a/util/src/panics.rs
+++ b/util/src/panics.rs
@@ -18,7 +18,6 @@
 
 use std::thread;
 use std::ops::DerefMut;
-use std::any::Any;
 use std::sync::{Arc, Mutex};
 
 /// Thread-safe closure for handling possible panics
@@ -75,7 +74,7 @@ impl PanicHandler {
 	#[cfg_attr(feature="dev", allow(deprecated))]
 	// TODO [todr] catch_panic is deprecated but panic::recover has different bounds (not allowing mutex)
 	pub fn catch_panic<G, R>(&self, g: G) -> thread::Result<R> where G: FnOnce() -> R + Send + 'static {
-		let guard = PanicGuard { handler: self };
+		let _guard = PanicGuard { handler: self };
 		let result = g();
 		Ok(result)
 	}
@@ -108,13 +107,6 @@ impl<F> OnPanicListener for F
 	}
 }
 
-fn convert_to_string(t: &Box<Any + Send>) -> Option<String> {
-	let as_str = t.downcast_ref::<&'static str>().cloned().map(|t| t.to_owned());
-	let as_string = t.downcast_ref::<String>().cloned();
-
-	as_str.or(as_string)
-}
-
 #[test]
 #[ignore] // panic forwarding doesnt work on the same thread in beta
 fn should_notify_listeners_about_panic () {
diff --git a/util/src/uint.rs b/util/src/uint.rs
index 912088fb9..7206a521e 100644
--- a/util/src/uint.rs
+++ b/util/src/uint.rs
@@ -991,7 +991,7 @@ mod tests {
 	}
 
 	#[test]
-	#[allow(eq_op)]
+	#[cfg_attr(feature="dev", allow(eq_op))]
 	pub fn uint256_comp_test() {
 		let small = U256([10u64, 0, 0, 0]);
 		let big = U256([0x8C8C3EE70C644118u64, 0x0209E7378231E632, 0, 0]);