fix clippy

Author: yoshidan

spanner/src/statement.rs

@@ -211,7 +211,7 @@ impl ToKind for ::prost_types::Timestamp {
     fn to_kind(&self) -> Kind {
         // The protobuf timestamp type should be formatted in RFC3339
         // See here for more details: https://docs.rs/prost-types/latest/prost_types/struct.Timestamp.html
-        let rfc3339 = format!("{}", self);
+        let rfc3339 = format!("{self}");
         rfc3339.to_kind()
     }
 

spanner/tests/change_stream_test.rs

@@ -166,7 +166,7 @@ async fn test_read_change_stream() {
     // Create Change Stream
     let cred = google_cloud_auth::credentials::CredentialsFile::new().await.unwrap();
     let project = cred.project_id.unwrap();
-    let db = format!("projects/{}/instances/test-instance/databases/local-database2", project);
+    let db = format!("projects/{project}/instances/test-instance/databases/local-database2");
     let admin_client = admin::client::Client::new(AdminClientConfig {
         environment: create_environment().await,
     })
@@ -190,10 +190,10 @@ async fn test_read_change_stream() {
             let op = res.wait(None).await;
             match op {
                 Ok(_) => tracing::info!("create change stream success"),
-                Err(e) => panic!("create change stream failed: {:?}", e),
+                Err(e) => panic!("create change stream failed: {e:?}"),
             }
         }
-        Err(e) => panic!("create change stream failed: {:?}", e),
+        Err(e) => panic!("create change stream failed: {e:?}"),
     }
 
     let now = OffsetDateTime::now_utc();