From 1103ba8d43e2c4c56902147b11603fcb1ce62176 Mon Sep 17 00:00:00 2001
From: NikVolf <nikvolf@gmail.com>
Date: Wed, 16 Jan 2019 17:15:02 +0300
Subject: [PATCH] fix warnings

---
 storage/src/tree_state.rs          | 3 ++-
 storage/src/tree_state_provider.rs | 2 +-
 2 files changed, 3 insertions(+), 2 deletions(-)

diff --git a/storage/src/tree_state.rs b/storage/src/tree_state.rs
index 8e111b59..5402e918 100644
--- a/storage/src/tree_state.rs
+++ b/storage/src/tree_state.rs
@@ -219,7 +219,8 @@ mod tests {
 	#[test]
 	fn appended_1_32_root() {
 		let mut tree = RegularTreeState::new();
-		tree.append(H256::from("bab6e8992959caf0ca94847c36b4e648a7f88a9b9c6a62ea387cf1fb9badfd62"));
+		tree.append(H256::from("bab6e8992959caf0ca94847c36b4e648a7f88a9b9c6a62ea387cf1fb9badfd62"))
+			.expect("failed to append to the tree");
 		assert_eq!(
 			tree.root(),
 			H256::from("af3a29c548af2d8314544875fe0a59555bfda3c81ea78da54bd02f89cce68acb")
diff --git a/storage/src/tree_state_provider.rs b/storage/src/tree_state_provider.rs
index 0e2eaa50..a62613fa 100644
--- a/storage/src/tree_state_provider.rs
+++ b/storage/src/tree_state_provider.rs
@@ -1,6 +1,6 @@
 use hash::H256;
 use bytes::Bytes;
-use {EpochTag, RegularTreeState};
+use RegularTreeState;
 
 pub trait TreeStateProvider {
 	fn tree_bytes_at(&self, root: &H256) -> Option<Bytes>;