Nonspecific error when when building lighting via commandlet

anonymous_user_f2498077
Wed, 08 May 2019 06:05:28 +0000
Rendering

I’m trying to setup automated lightmap builds for my project as part of our TeamCity build process. The project successfully uses RunUAT to perform build/cook operations, but I haven’t been able to get any approach for building lighting to work.

LogContentCommandlet: Error: [REPORT] Failed building lighting for /Game/Maps/NewMap

LogStaticLightingSystem: Warning: Failed to build lighting!!! Lighting build failed.

I’ve reproduced these problems in a completely blank project, created in UE 4.21.2.
This is the log output from the build machine, running UE4Editor.exe with the arguments allowcommandletrendering, run=resavepackages and buildlighting.

E: Step 2/5: Build Lightmap Test (Command Line) (7s)
 :	 [Step 2/5] Starting: C:\UE4\UE_4.21\Engine\Binaries\Win64\UE4Editor.exe D:\TeamCity-BuildAgent-2\work\a810b588373951b6\BuildTest.uproject -run=resavepackages -buildlighting -mapsonly -projectonly -allowcommandletrendering -messaging -map=NewMap
 :	 [Step 2/5] in directory: D:\TeamCity-BuildAgent-2\work\a810b588373951b6
 :	 [Step 2/5] [2019.05.08-01.59.38:140][  0]LogStreaming: Display: Took  0.333s to InitEngineTextLocalization.
 :	 [Step 2/5] [2019.05.08-01.59.38:579][  0]LogTemp: Display: Loaded TP AllDesktopTargetPlatform
 :	 [Step 2/5] [2019.05.08-01.59.38:589][  0]LogTemp: Display: Loaded TP MacClientTargetPlatform
 :	 [Step 2/5] [2019.05.08-01.59.38:599][  0]LogTemp: Display: Loaded TP MacNoEditorTargetPlatform
 :	 [Step 2/5] [2019.05.08-01.59.38:610][  0]LogTemp: Display: Loaded TP MacServerTargetPlatform
 :	 [Step 2/5] [2019.05.08-01.59.38:621][  0]LogTemp: Display: Loaded TP MacTargetPlatform
 :	 [Step 2/5] [2019.05.08-01.59.38:631][  0]LogTemp: Display: Loaded TP WindowsClientTargetPlatform
 :	 [Step 2/5] [2019.05.08-01.59.38:642][  0]LogTemp: Display: Loaded TP WindowsNoEditorTargetPlatform
 :	 [Step 2/5] [2019.05.08-01.59.38:652][  0]LogTemp: Display: Loaded TP WindowsServerTargetPlatform
 :	 [Step 2/5] [2019.05.08-01.59.38:658][  0]LogTemp: Display: Loaded TP WindowsTargetPlatform
 :	 [Step 2/5] [2019.05.08-01.59.38:716][  0]LogTemp: Display: Loaded TP AndroidTargetPlatform
 :	 [Step 2/5] [2019.05.08-01.59.38:716][  0]LogTemp: Display: Loaded TP AndroidTargetPlatform
 :	 [Step 2/5] [2019.05.08-01.59.38:716][  0]LogTemp: Display: Loaded TP AndroidTargetPlatform
 :	 [Step 2/5] [2019.05.08-01.59.38:716][  0]LogTemp: Display: Loaded TP AndroidTargetPlatform
 :	 [Step 2/5] [2019.05.08-01.59.38:716][  0]LogTemp: Display: Loaded TP AndroidTargetPlatform
 :	 [Step 2/5] [2019.05.08-01.59.38:716][  0]LogTemp: Display: Loaded TP AndroidTargetPlatform
 :	 [Step 2/5] [2019.05.08-01.59.38:716][  0]LogTemp: Display: Loaded TP AndroidTargetPlatform
 :	 [Step 2/5] [2019.05.08-01.59.38:716][  0]LogTemp: Display: Loaded TP AndroidTargetPlatform
 :	 [Step 2/5] [2019.05.08-01.59.38:716][  0]LogTemp: Display: Loaded TP AndroidTargetPlatform
 :	 [Step 2/5] [2019.05.08-01.59.38:717][  0]LogTemp: Display: Loaded TP AndroidTargetPlatform
 :	 [Step 2/5] [2019.05.08-01.59.38:717][  0]LogTemp: Display: Loaded TP AndroidTargetPlatform
 :	 [Step 2/5] [2019.05.08-01.59.38:717][  0]LogTemp: Display: Loaded TP AndroidTargetPlatform
 :	 [Step 2/5] [2019.05.08-01.59.38:717][  0]LogTemp: Display: Loaded TP AndroidTargetPlatform
 :	 [Step 2/5] [2019.05.08-01.59.38:717][  0]LogTemp: Display: Loaded TP AndroidTargetPlatform
 :	 [Step 2/5] [2019.05.08-01.59.38:717][  0]LogTemp: Display: Loaded TP AndroidTargetPlatform
 :	 [Step 2/5] [2019.05.08-01.59.38:717][  0]LogTemp: Display: Loaded TP AndroidTargetPlatform
 :	 [Step 2/5] [2019.05.08-01.59.38:717][  0]LogTemp: Display: Loaded TP AndroidTargetPlatform
 :	 [Step 2/5] [2019.05.08-01.59.38:717][  0]LogTemp: Display: Loaded TP AndroidTargetPlatform
 :	 [Step 2/5] [2019.05.08-01.59.38:718][  0]LogTemp: Display: Loaded TP HTML5TargetPlatform
 :	 [Step 2/5] [2019.05.08-01.59.38:773][  0]LogTemp: Display: Loaded TP IOSTargetPlatform
 :	 [Step 2/5] [2019.05.08-01.59.38:773][  0]LogTemp: Display: Loaded TP IOSTargetPlatform
 :	 [Step 2/5] [2019.05.08-01.59.38:791][  0]LogTemp: Display: Loaded TP TVOSTargetPlatform
 :	 [Step 2/5] [2019.05.08-01.59.38:791][  0]LogTemp: Display: Loaded TP TVOSTargetPlatform
 :	 [Step 2/5] [2019.05.08-01.59.38:801][  0]LogTemp: Display: Loaded TP LinuxClientTargetPlatform
 :	 [Step 2/5] [2019.05.08-01.59.38:811][  0]LogTemp: Display: Loaded TP LinuxNoEditorTargetPlatform
 :	 [Step 2/5] [2019.05.08-01.59.38:821][  0]LogTemp: Display: Loaded TP LinuxServerTargetPlatform
 :	 [Step 2/5] [2019.05.08-01.59.38:830][  0]LogTemp: Display: Loaded TP LinuxTargetPlatform
 :	 [Step 2/5] [2019.05.08-01.59.38:867][  0]LogTemp: Display: Loaded TP LuminTargetPlatform
 :	 [Step 2/5] [2019.05.08-01.59.38:868][  0]LogTemp: Display: Loaded TP LuminTargetPlatform
 :	 [Step 2/5] [2019.05.08-01.59.38:868][  0]LogTargetPlatformManager: Display: Building Assets For Windows
 :	 [Step 2/5] [2019.05.08-01.59.38:923][  0]LogShaderCompilers: Display: Using XGE Shader Compiler (Interception Interface).
 :	 [Step 2/5] [2019.05.08-01.59.39:385][  0]LogDerivedDataCache: Display: Max Cache Size: 512 MB
 :	 [Step 2/5] [2019.05.08-01.59.39:415][  0]LogDerivedDataCache: Display: Loaded Boot cache: C:/Windows/system32/config/systemprofile/AppData/Local/UnrealEngine/4.21/DerivedDataCache/Boot.ddc
 :	 [Step 2/5] [2019.05.08-01.59.39:429][  0]LogDerivedDataCache: Display: Pak cache opened for reading ../../../Engine/DerivedDataCache/Compressed.ddp.
 :	 [Step 2/5] [2019.05.08-01.59.40:727][  0]LogGameplayTags: Display: UGameplayTagsManager::DoneAddingNativeTags. DelegateIsBound: 0
 :	 [Step 2/5] [2019.05.08-01.59.40:867][  0]LogContentCommandlet: Display: Loading D:/TeamCity-BuildAgent-2/work/a810b588373951b6/Content/Maps/NewMap.umap
 :	 [Step 2/5] [2019.05.08-01.59.41:081][  0]LogContentCommandlet: Error: [REPORT] Failed building lighting for /Game/Maps/NewMap
 :	 [Step 2/5] [2019.05.08-01.59.41:081][  0]LogStaticLightingSystem: Warning: Failed to build lighting!!! Lighting build failed.
 :	 [Step 2/5] [2019.05.08-01.59.41:142][  0]LogContentCommandlet: Display: [REPORT] 1/1 packages required resaving
 :	 [Step 2/5] [2019.05.08-01.59.41:142][  0]LogInit: Display:
 :	 [Step 2/5] [2019.05.08-01.59.41:142][  0]LogInit: Display: Warning/Error Summary (Unique only)
 :	 [Step 2/5] [2019.05.08-01.59.41:142][  0]LogInit: Display: -----------------------------------
 :	 [Step 2/5] [2019.05.08-01.59.41:142][  0]LogInit: Display: LogContentCommandlet: Error: [REPORT] Failed building lighting for /Game/Maps/NewMap
 :	 [Step 2/5] [2019.05.08-01.59.41:142][  0]LogInit: Display: LogStaticLightingSystem: Warning: Failed to build lighting!!! Lighting build failed.
 :	 [Step 2/5] [2019.05.08-01.59.41:143][  0]LogInit: Display:
 :	 [Step 2/5] [2019.05.08-01.59.41:143][  0]LogInit: Display: Failure - 1 error(s), 1 warning(s)
 :	 [Step 2/5] [2019.05.08-01.59.41:143][  0]LogInit: Display:
 :	 [Step 2/5]
 :	 [Step 2/5] Execution of commandlet took:  0.33 seconds
 :	 [Step 2/5] [2019.05.08-01.59.41:399][  0]LogShaderCompilers: Display: Shaders left to compile 0
W:	 [Step 2/5] Process exited with code 1
E:	 [Step 2/5] Process exited with code 1 (Step: Build Lightmap Test (Command Line))
E:	 [Step 2/5] Step Build Lightmap Test (Command Line) failed

At the same time as this, the Swarm agent log on the build server produces this log.

11:59:41 AM: [Interface:TryOpenConnection] Local connection established
11:59:41 AM: [Interface:OpenJob] Error: Value cannot be null.
Parameter name: value
11:59:41 AM: [MaintainConnections] Detected dropped local connection, cleaning up (245E4B58)
11:59:41 AM: [CloseConnection] Closing connection 245E4B58 using handle 245E4B58
11:59:41 AM: [CloseConnection] Connection confirmed for disconnection 245E4B58
11:59:41 AM: [FlushMessageQueue] Draining message queue for 245E4B58
11:59:41 AM: [FlushMessageQueue] Lock acquired for 245E4B58
11:59:41 AM: [FlushMessageQueue] Lock released for 245E4B58
11:59:41 AM: [FlushMessageQueue] Drain complete for 245E4B58
11:59:41 AM: [CloseConnection] Closing orphaned Job ()
11:59:41 AM: [FlushMessageQueue] Draining message queue for 245E4B58
11:59:41 AM: [FlushMessageQueue] Lock acquired for 245E4B58
11:59:41 AM: [FlushMessageQueue] Lock released for 245E4B58
11:59:41 AM: [FlushMessageQueue] Drain complete for 245E4B58
11:59:41 AM: [PostJobStatsToDB] Database error:
11:59:41 AM: [PostJobStatsToDB] Object reference not set to an instance of an object.
11:59:41 AM: [FlushMessageQueue] Draining message queue for 245E4B58
11:59:41 AM: [FlushMessageQueue] Lock acquired for 245E4B58
11:59:41 AM: [FlushMessageQueue] Lock released for 245E4B58
11:59:41 AM: [FlushMessageQueue] Drain complete for 245E4B58
11:59:41 AM: [FlushMessageQueue] Draining message queue for 245E4B58
11:59:41 AM: [FlushMessageQueue] Lock acquired for 245E4B58
11:59:41 AM: [FlushMessageQueue] Lock released for 245E4B58
11:59:41 AM: [CloseConnection] Connection disconnected 245E4B58
11:59:41 AM: [FlushMessageQueue] Drain complete for 245E4B58
11:59:41 AM: [GetMessage] Safely returning to 245E4B58 with no message
11:59:41 AM: [MaintainConnections] Local connection has closed (245E4B58)
11:59:41 AM: [MaintainConnections] Removed connection 245E4B58
11:59:41 AM: [MaintainConnections] All connections have closed

I have also tried using RunUAT directly with the RebuildLightmaps argument, but it just complains about me not using P4

Running AutomationTool...
Parsing command line: RebuildLightmaps
WARNING: Command RebuildLightMaps requires P4 functionality.
WARNING: P4PORT is not set. Using perforce:1666
  Perforce client error:
        Connect to server failed; check $P4PORT.
        TCP connect to perforce:1666 failed.
        No such host is known.
ERROR: Perforce command failed: Perforce client error:
        Connect to server failed; check $P4PORT.
        TCP connect to perforce:1666 failed.
        No such host is known.
       . Please make sure your P4PORT or uebp_PORT is set properly.
       (see C:\UE4\UE_4.21\Engine\Programs\AutomationTool\Saved\Logs\Log.txt for full exception trace)

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