2017.4.20f2 Cloud build ios suddently has error with postprocess script

It was working 1 week ago and now it's not.

I have a script to add Notification:

Code (CSharp):

1. public static void AddUserNotificationFramework(string projectPath)
2.     {
3.         Debug.LogError("AddUserNotificationFramework");
4.         #if UNITY_IOS
5.         string pbxProjectPath = projectPath + "/Unity-iPhone.xcodeproj/project.pbxproj";
6.         PBXProject proj = new PBXProject();
7.         proj.ReadFromFile(pbxProjectPath);
8.  
9.         string targetName = PBXProject.GetUnityTargetName ();
10.         string guid = proj.TargetGuidByName (targetName);
11.         proj.AddFrameworkToProject(guid, "UserNotifications.framework", false);
12.  
13.         ProjectCapabilityManager projCapManager = new ProjectCapabilityManager(pbxProjectPath, "ios.entitlements", "Unity-iPhone");
14.         projCapManager.AddBackgroundModes(BackgroundModesOptions.RemoteNotifications);
15.         #if Preview
16.         projCapManager.AddPushNotifications(true);
17.         #else
18.         projCapManager.AddPushNotifications(false);
19.         #endif
20.         projCapManager.WriteToFile();
21.         proj.WriteToFile (pbxProjectPath);
22.         #endif
23.     }

But the cloud build say it can't copy file

[Unity] ERROR: PostProcessIOS
1156: [Unity] ERROR: AddUserNotificationFramework
1157: [Unity] ERROR: File Library/Unused/eda03f975aaff4c86a29c2aa2e2ba88b couldn't be written. Because moving /BUILD_PATH/mission-one.ninja-wars.preview-php-ios/Temp/UnityTempFile-f0d80ee6b2db14859a734411d62ce5d6 to /BUILD_PATH/Library/Preferences/Unity/Editor-5.x/Layouts/LastLayout.dwlt failed.
1158: [Unity] ERROR: File Library/Unused/eda03f975aaff4c86a29c2aa2e2ba88b couldn't be written. Because moving /BUILD_PATH/mission-one.ninja-wars.preview-php-ios/Temp/UnityTempFile-14cb7fca1cadf4d3da821ddb3a3e5876 to /BUILD_PATH/Library/Preferences/Unity/Editor-5.x/Layouts/LastLayout.dwlt failed.

It's still working on local build.
Anyone know why or how to fix it? Thanks a lot.