diff --git a/tools/testing/dart/test_runner.dart b/tools/testing/dart/test_runner.dart
index 1d13426..bbe9a68 100644
--- a/tools/testing/dart/test_runner.dart
+++ b/tools/testing/dart/test_runner.dart
@@ -432,7 +432,6 @@
   int pid;
   OutputLog stdout;
   OutputLog stderr = OutputLog();
-  StreamConsumer stdoutConsumer;
   List<String> diagnostics = <String>[];
   bool compilationSkipped = false;
   Completer<CommandOutput> completer;