Burst errors in new Unity version

Installation Upgrades
#1

Hi, we are using the latest Unity version 2021.1.0f1 with the latest A* Pathfinding Project 4.3.41 (Pro) via Package Manager.

  • Burst 1.5.0
  • Jobs 0.8.0-preview.23
  • Universal RP 11.0.0

The game runs fine in the editor, but when compiling to Android / iOS it throws these errors every frame. Any idea we can fix this?

03-29 13:19:52.580 14384 14445 E Unity   : Rethrow as TypeInitializationException
03-29 13:19:52.599 14384 14445 E Unity   : Exception: You cannot dispose an invalid command builder. Are you trying to dipose it twice?
03-29 13:19:52.599 14384 14445 E Unity   :   at Pathfinding.Drawing.CommandBuilder.DisposeInternal () [0x00013] in C:\Projects\lr2020\Unity\Library\PackageCache\com.arongranberg.astar@4.3.41\Drawing\CommandBuilder.cs:162
03-29 13:19:52.599 14384 14445 E Unity   :   at Pathfinding.Drawing.DrawingManager.CheckFrameTicking () [0x0004f] in C:\Projects\lr2020\Unity\Library\PackageCache\com.arongranberg.astar@4.3.41\Drawing\DrawingManager.cs:388
03-29 13:19:52.599 14384 14445 E Unity   :   at Pathfinding.Drawing.DrawingManager.SubmitFrame (UnityEngine.Camera camera, UnityEngine.Rendering.CommandBuffer cmd, System.Boolean usingRenderPipeline) [0x00023] in C:\Projects\lr2020\Unity\Library\PackageCache\com.arongranberg.astar@4.3.41\Drawing\DrawingManager.cs:416
03-29 13:19:52.599 14384 14445 E Unity   :   at Pathfinding.Drawing.DrawingManager.ExecuteCustomRenderPass (UnityEngine.Rendering.ScriptableRenderContext context, UnityEngine.Camera camera) [0x00018] in C:\Projects\lr2020\Unity\Library\PackageCache\com.arongranberg.astar@4.3.41\D
03-29 13:19:52.619 14384 14445 E Unity   : Exception: You cannot dispose an invalid command builder. Are you trying to dipose it twice?
03-29 13:19:52.619 14384 14445 E Unity   :   at Pathfinding.Drawing.CommandBuilder.DisposeInternal () [0x00013] in C:\Projects\lr2020\Unity\Library\PackageCache\com.arongranberg.astar@4.3.41\Drawing\CommandBuilder.cs:162
03-29 13:19:52.619 14384 14445 E Unity   :   at Pathfinding.Drawing.DrawingManager.CheckFrameTicking () [0x0004f] in C:\Projects\lr2020\Unity\Library\PackageCache\com.arongranberg.astar@4.3.41\Drawing\DrawingManager.cs:388
03-29 13:19:52.619 14384 14445 E Unity   :   at Pathfinding.Drawing.DrawingManager.SubmitFrame (UnityEngine.Camera camera, UnityEngine.Rendering.CommandBuffer cmd, System.Boolean usingRenderPipeline) [0x00023] in C:\Projects\lr2020\Unity\Library\PackageCache\com.arongranberg.astar@4.3.41\Drawing\DrawingManager.cs:416
03-29 13:19:52.619 14384 14445 E Unity   :   at Pathfinding.Drawing.DrawingManager.ExecuteCustomRenderPass (UnityEngine.Rendering.ScriptableRenderContext context, UnityEngine.Camera camera) [0x00018] in C:\Projects\lr2020\Unity\Library\PackageCache\com.arongranberg.astar@4.3.41\D
03-29 13:19:52.629 14384 14445 E Unity   : NullReferenceException: Could not find the delegate type ''
03-29 13:19:52.629 14384 14445 E Unity   :   at Unity.Burst.BurstCompiler.CompileUnsafeStaticMethod (System.RuntimeMethodHandle handle) [0x00149] in C:\Projects\lr2020\Unity\Library\PackageCache\com.unity.burst@1.5.0\Runtime\BurstCompiler.cs:215
03-29 13:19:52.629 14384 14445 E Unity   :   at Pathfinding.Drawing.DrawingData+BuilderData+ResetAllBuffers_0000013F$BurstDirectCall.GetFunctionPointerDiscard (System.IntPtr& ) <0x9e95a2e8 + 0x00067> in <eb106b94e57745a58f438dd94bbc3458>:0
03-29 13:19:52.629 14384 14445 E Unity   :   at Pathfinding.Drawing.DrawingData+BuilderData+ResetAllBuffers_0000013F$BurstDirectCall.GetFunctionPointer () <0x9e95a250 + 0x0003f> in <eb106b94e57745a58f438dd94bbc3458>:0
03-29 13:19:52.629 14384 14445 E Unity   :   at Pathfinding.Drawing.DrawingData+BuilderData+ResetAllBuffers_0000013F$BurstDirectCall.Constructor () <0x9e95a1e0 + 0x0001f> in <eb106b94e57745a58f438dd94bbc3458>:0
03-29 13:19:52.629 14384 14445 E Unity   :   at Pathfinding.Drawing.DrawingData+BuilderData+ResetAllBuffers_0000013F$BurstDirectCall..cctor () <0x9e95a138 + 0x0002b> in <eb106b94e57745a58f438dd94bbc3458>:0
#2

Hi

That looks like it might potentially be a Unity bug.
Just to be sure, can you try to disable all kinds of bytecode stripping and things like that when building?

#3

Hey Aron,

For now we have fixed it by downgrading only the Burst to 1.4.6 which works. So the problem resides in the new version 1.5.0.
I haven’t tried disabling the bytecode stripping, but I’ve tried to link.xml to preserve the whole assembly from A*, Burst and Jobs, but without success.

And after upgrading to the beta, sometimes the “RVOController.cs:340” (rvoAgent.CalculatedTargetPoint) has a NaN in the x or z of the Vector3, resulting in the RVO controllers to not move sometimes.

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