util reexports less std

sync/src/tests/helpers.rs

@@ -14,6 +14,7 @@
 // You should have received a copy of the GNU General Public License
 // along with Parity.  If not, see <http://www.gnu.org/licenses/>.
 
+use std::collections::{VecDeque, HashSet, HashMap};
 use util::*;
 use network::*;
 use tests::snapshot::*;

sync/src/tests/snapshot.rs

@@ -14,6 +14,7 @@
 // You should have received a copy of the GNU General Public License
 // along with Parity.  If not, see <http://www.gnu.org/licenses/>.
 
+use std::collections::HashMap;
 use util::*;
 use ethcore::snapshot::{SnapshotService, ManifestData, RestorationStatus};
 use ethcore::header::BlockNumber;