diff --git a/openraft/src/core/raft_core.rs b/openraft/src/core/raft_core.rs
index d5ccb4127..5bd10d554 100644
--- a/openraft/src/core/raft_core.rs
+++ b/openraft/src/core/raft_core.rs
@@ -55,7 +55,9 @@ use crate::error::RPCError;
 use crate::error::Timeout;
 use crate::log_id::LogIdOptionExt;
 use crate::log_id::RaftLogId;
-use crate::metrics::{RaftDataMetrics, RaftMetrics, RaftServerMetrics};
+use crate::metrics::RaftDataMetrics;
+use crate::metrics::RaftMetrics;
+use crate::metrics::RaftServerMetrics;
 use crate::metrics::ReplicationMetrics;
 use crate::network::RPCOption;
 use crate::network::RPCTypes;
diff --git a/tests/tests/metrics/t10_server_metrics_and_data_metrics.rs b/tests/tests/metrics/t10_server_metrics_and_data_metrics.rs
index 4e0f006bf..c85204e46 100644
--- a/tests/tests/metrics/t10_server_metrics_and_data_metrics.rs
+++ b/tests/tests/metrics/t10_server_metrics_and_data_metrics.rs
@@ -40,12 +40,7 @@ async fn server_metrics_and_data_metrics() -> Result<()> {
     log_index += router.client_request_many(0, "foo", n).await?;
 
     let last_log_index = data_metrics.borrow().last_log.unwrap_or_default().index;
-    assert_eq!(
-        last_log_index,
-        log_index,
-        "last_log_index should be {:?}",
-        log_index
-    );
+    assert_eq!(last_log_index, log_index, "last_log_index should be {:?}", log_index);
     assert!(
         !server_metrics.borrow().has_changed(),
         "server metrics should not update"