Merge "Fix the missing initialization of tracker"
diff --git a/src/com/android/tradefed/invoker/InvocationExecution.java b/src/com/android/tradefed/invoker/InvocationExecution.java
index 9e53af4..a1dcecf 100644
--- a/src/com/android/tradefed/invoker/InvocationExecution.java
+++ b/src/com/android/tradefed/invoker/InvocationExecution.java
@@ -231,6 +231,7 @@
new ParallelDeviceExecutor<>(testInfo.getContext().getDevices());
List<Callable<Boolean>> callableTasks = new ArrayList<>();
for (String deviceName : testInfo.getContext().getDeviceConfigNames()) {
+ mTrackTargetPreparers.put(deviceName, new HashSet<>());
final int deviceIndex = index;
// Replicate TestInfo
TestInformation replicated =