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Webgl build fails on many different projects

Discussion in 'Web' started by hudmond, Oct 14, 2019.

  1. hudmond

    hudmond

    Joined:
    Jun 24, 2019
    Posts:
    5
    UPDATE: I have been successful building by using the Asm.js linker and a custom editor build script but most of my projects still fail whenever I try to use the wasm linker. They sometimes succeed also but it seems very rare.
    Here's the build script I found on another thread and modified to add some build options: https://pastebin.com/8zzX2SUS

    I have even tried reinstalling unity/visual studio and tried fresh projects in versions 2019.1.14f1 and 2019.2.8f1. If anyone has any suggestions or ideas on what might be wrong I would greatly appreciate it!

    I was having no issues building before but now after a length attempt at compiling I receive this (even on test projects with basically just a cube and a plane in a scene):

    Failed running "C:/Program Files/Unity/Hub/Editor/2019.2.8f1/Editor/Data/PlaybackEngines/WebGLSupport\BuildTools\Emscripten_Win\python\2.7.5.3_64bit\python.exe" -E "C:/Program Files/Unity/Hub/Editor/2019.2.8f1/Editor/Data/PlaybackEngines/WebGLSupport\BuildTools\Emscripten\emcc" @"C:\UnityDev\Acrophobia\Assets\..\Temp\emcc_arguments.resp"

    stdout:
    stderr:Assertion failed: ERROR:root:'C:/Program Files/Unity/Hub/Editor/2019.2.8f1/Editor/Data/PlaybackEngines/WebGLSupport\BuildTools\Emscripten_FastComp_Win\binaryen\bin\asm2wasm C:\UnityDev\Acrophobia\Temp\StagingArea\Data\linkresult_wasm\build.temp.asm.js --total-memory=33554432 --trap-mode=clamp -O3 --mem-init=C:\UnityDev\Acrophobia\Temp\StagingArea\Data\linkresult_wasm\build.js.mem --mem-base=1024 --wasm-only --symbolmap=C:\UnityDev\Acrophobia\Temp\StagingArea\Data\linkresult_wasm\build.js.symbols -o C:\UnityDev\Acrophobia\Temp\StagingArea\Data\linkresult_wasm\build.wasm' failed
    UnityEditor.EditorApplication:Internal_CallGlobalEventHandler() (at C:/buildslave/unity/build/Editor/Mono/EditorApplication.cs:432)



    Exception: Failed building WebGL Player.
    UnityEditor.WebGL.ProgramUtils.StartProgramChecked (System.Diagnostics.ProcessStartInfo p) (at /Users/builduser/buildslave/unity/build/PlatformDependent/WebGL/Extensions/Unity.WebGL.extensions/ProgramUtils.cs:48)
    UnityEditor.WebGL.WebGlBuildPostprocessor.EmscriptenLink (UnityEditor.Modules.BuildPostProcessArgs args, System.Boolean wasmBuild, System.String sourceFiles, System.String sourceFilesHash) (at /Users/builduser/buildslave/unity/build/PlatformDependent/WebGL/Extensions/Unity.WebGL.extensions/BuildPostprocessor.cs:446)
    UnityEditor.WebGL.WebGlBuildPostprocessor.LinkBuild (UnityEditor.Modules.BuildPostProcessArgs args) (at /Users/builduser/buildslave/unity/build/PlatformDependent/WebGL/Extensions/Unity.WebGL.extensions/BuildPostprocessor.cs:496)
    UnityEditor.WebGL.WebGlBuildPostprocessor.PostProcess (UnityEditor.Modules.BuildPostProcessArgs args) (at /Users/builduser/buildslave/unity/build/PlatformDependent/WebGL/Extensions/Unity.WebGL.extensions/BuildPostprocessor.cs:931)
    UnityEditor.Modules.DefaultBuildPostprocessor.PostProcess (UnityEditor.Modules.BuildPostProcessArgs args, UnityEditor.BuildProperties& outProperties) (at C:/buildslave/unity/build/Editor/Mono/Modules/DefaultBuildPostprocessor.cs:27)
    UnityEditor.PostprocessBuildPlayer.Postprocess (UnityEditor.BuildTargetGroup targetGroup, UnityEditor.BuildTarget target, System.String installPath, System.String companyName, System.String productName, System.Int32 width, System.Int32 height, UnityEditor.BuildOptions options, UnityEditor.RuntimeClassRegistry usedClassRegistry, UnityEditor.Build.Reporting.BuildReport report) (at C:/buildslave/unity/build/Editor/Mono/BuildPipeline/PostprocessBuildPlayer.cs:281)
    UnityEditor.EditorApplication:Internal_CallGlobalEventHandler() (at C:/buildslave/unity/build/Editor/Mono/EditorApplication.cs:432)


    Build completed with a result of 'Failed'
    UnityEditor.EditorApplication:Internal_CallGlobalEventHandler() (at C:/buildslave/unity/build/Editor/Mono/EditorApplication.cs:432)


    UnityEditor.BuildPlayerWindow+BuildMethodException: 3 errors
    at UnityEditor.BuildPlayerWindow+DefaultBuildMethods.BuildPlayer (UnityEditor.BuildPlayerOptions options) [0x00242] in C:\buildslave\unity\build\Editor\Mono\BuildPlayerWindowBuildMethods.cs:190
    at UnityEditor.BuildPlayerWindow.CallBuildMethods (System.Boolean askForBuildLocation, UnityEditor.BuildOptions defaultBuildOptions) [0x0007f] in C:\buildslave\unity\build\Editor\Mono\BuildPlayerWindowBuildMethods.cs:95
    UnityEditor.EditorApplication:Internal_CallGlobalEventHandler() (at C:/buildslave/unity/build/Editor/Mono/EditorApplication.cs:432)
     
    Last edited: Oct 15, 2019
    hudmond, Oct 14, 2019
    #1

  2. jukka_j

    jukka_j

    Unity Technologies

    Joined:
    May 4, 2018
    Posts:
    953
    The cause looks like an Emscripten asm2wasm tool failure. Are there any other errors printed around that tool failing?
     
    jukka_j, Oct 18, 2019
    #2

  3. hudmond

    hudmond

    Joined:
    Jun 24, 2019
    Posts:
    5
    I don't know what's causing it still but I created a hyper v machine and installed unity on it, and it builds the projects fine. I have uninstalled everything I can think of unity related on my machine trying to fix the asm2wasm issues but with no success so far other than building it in a fresh win10 virtual machine, or building out to asm.js instead. Trying to figure out what else I can remove/reinstall other than resorting to reformatting my entire machine to (hopefully) fix the issue :(

    Occasionally it fails with another message similar to these:

    Failed running "C:/Program Files/Unity/Hub/Editor/2019.2.8f1/Editor/Data/PlaybackEngines/WebGLSupport\BuildTools\Emscripten_Win\python\2.7.5.3_64bit\python.exe" -E "C:/Program Files/Unity/Hub/Editor/2019.2.8f1/Editor/Data/PlaybackEngines/WebGLSupport\BuildTools\Emscripten\emcc" @"C:\UnityDev\AmazingCubeGame\Assets\..\Temp\emcc_arguments.resp"

    stdout:
    stderr:Assertion failed: *task.currp, file ???, line -1712382712ERROR:root:'C:/Program Files/Unity/Hub/Editor/2019.2.8f1/Editor/Data/PlaybackEngines/WebGLSupport\BuildTools\Emscripten_FastComp_Win\binaryen\bin\asm2wasm C:\UnityDev\AmazingCubeGame\Temp\StagingArea\Data\linkresult_wasm\build.temp.asm.js --total-memory=33554432 --trap-mode=clamp -O3 --mem-init=C:\UnityDev\AmazingCubeGame\Temp\StagingArea\Data\linkresult_wasm\build.js.mem --mem-base=1024 --wasm-only --symbolmap=C:\UnityDev\AmazingCubeGame\Temp\StagingArea\Data\linkresult_wasm\build.js.symbols -o C:\UnityDev\AmazingCubeGame\Temp\StagingArea\Data\linkresult_wasm\build.wasm' failed
    UnityEngine.GUIUtility:processEvent(Int32, IntPtr) (at C:/buildslave/unity/build/Modules/IMGUI/GUIUtility.cs:179)

    Exception: Failed building WebGL Player.
    UnityEditor.WebGL.ProgramUtils.StartProgramChecked (System.Diagnostics.ProcessStartInfo p) (at /Users/builduser/buildslave/unity/build/PlatformDependent/WebGL/Extensions/Unity.WebGL.extensions/ProgramUtils.cs:48)
    UnityEditor.WebGL.WebGlBuildPostprocessor.EmscriptenLink (UnityEditor.Modules.BuildPostProcessArgs args, System.Boolean wasmBuild, System.String sourceFiles, System.String sourceFilesHash) (at /Users/builduser/buildslave/unity/build/PlatformDependent/WebGL/Extensions/Unity.WebGL.extensions/BuildPostprocessor.cs:446)
    UnityEditor.WebGL.WebGlBuildPostprocessor.LinkBuild (UnityEditor.Modules.BuildPostProcessArgs args) (at /Users/builduser/buildslave/unity/build/PlatformDependent/WebGL/Extensions/Unity.WebGL.extensions/BuildPostprocessor.cs:496)
    UnityEditor.WebGL.WebGlBuildPostprocessor.PostProcess (UnityEditor.Modules.BuildPostProcessArgs args) (at /Users/builduser/buildslave/unity/build/PlatformDependent/WebGL/Extensions/Unity.WebGL.extensions/BuildPostprocessor.cs:931)
    UnityEditor.Modules.DefaultBuildPostprocessor.PostProcess (UnityEditor.Modules.BuildPostProcessArgs args, UnityEditor.BuildProperties& outProperties) (at C:/buildslave/unity/build/Editor/Mono/Modules/DefaultBuildPostprocessor.cs:27)
    UnityEditor.PostprocessBuildPlayer.Postprocess (UnityEditor.BuildTargetGroup targetGroup, UnityEditor.BuildTarget target, System.String installPath, System.String companyName, System.String productName, System.Int32 width, System.Int32 height, UnityEditor.BuildOptions options, UnityEditor.RuntimeClassRegistry usedClassRegistry, UnityEditor.Build.Reporting.BuildReport report) (at C:/buildslave/unity/build/Editor/Mono/BuildPipeline/PostprocessBuildPlayer.cs:281)
    UnityEngine.GUIUtility:processEvent(Int32, IntPtr) (at C:/buildslave/unity/build/Modules/IMGUI/GUIUtility.cs:179)
    Build completed with a result of 'Failed'
    UnityEngine.GUIUtility:processEvent(Int32, IntPtr) (at C:/buildslave/unity/build/Modules/IMGUI/GUIUtility.cs:179)

    UnityEditor.BuildPlayerWindow+BuildMethodException: 3 errors
    at UnityEditor.BuildPlayerWindow+DefaultBuildMethods.BuildPlayer (UnityEditor.BuildPlayerOptions options) [0x00242] in C:\buildslave\unity\build\Editor\Mono\BuildPlayerWindowBuildMethods.cs:190
    at UnityEditor.BuildPlayerWindow.CallBuildMethods (System.Boolean askForBuildLocation, UnityEditor.BuildOptions defaultBuildOptions) [0x0007f] in C:\buildslave\unity\build\Editor\Mono\BuildPlayerWindowBuildMethods.cs:95
    UnityEngine.GUIUtility:processEvent(Int32, IntPtr) (at C:/buildslave/unity/build/Modules/IMGUI/GUIUtility.cs:179)


    ---
    Failed running "C:/Program Files/Unity/Hub/Editor/2019.2.8f1/Editor/Data/PlaybackEngines/WebGLSupport\BuildTools\Emscripten_Win\python\2.7.5.3_64bit\python.exe" -E "C:/Program Files/Unity/Hub/Editor/2019.2.8f1/Editor/Data/PlaybackEngines/WebGLSupport\BuildTools\Emscripten\emcc" @"C:\UnityDev\AmazingCubeGame\Assets\..\Temp\emcc_arguments.resp"

    stdout:
    stderr:Assertion failed: *task.currp, file ???, line 385901096ERROR:root:'C:/Program Files/Unity/Hub/Editor/2019.2.8f1/Editor/Data/PlaybackEngines/WebGLSupport\BuildTools\Emscripten_FastComp_Win\binaryen\bin\asm2wasm C:\UnityDev\AmazingCubeGame\Temp\StagingArea\Data\linkresult_wasm\build.temp.asm.js --total-memory=33554432 --trap-mode=clamp -O3 --mem-init=C:\UnityDev\AmazingCubeGame\Temp\StagingArea\Data\linkresult_wasm\build.js.mem --mem-base=1024 --wasm-only --symbolmap=C:\UnityDev\AmazingCubeGame\Temp\StagingArea\Data\linkresult_wasm\build.js.symbols -o C:\UnityDev\AmazingCubeGame\Temp\StagingArea\Data\linkresult_wasm\build.wasm' failed
    UnityEngine.GUIUtility:processEvent(Int32, IntPtr) (at C:/buildslave/unity/build/Modules/IMGUI/GUIUtility.cs:179)

    Exception: Failed building WebGL Player.
    UnityEditor.WebGL.ProgramUtils.StartProgramChecked (System.Diagnostics.ProcessStartInfo p) (at /Users/builduser/buildslave/unity/build/PlatformDependent/WebGL/Extensions/Unity.WebGL.extensions/ProgramUtils.cs:48)
    UnityEditor.WebGL.WebGlBuildPostprocessor.EmscriptenLink (UnityEditor.Modules.BuildPostProcessArgs args, System.Boolean wasmBuild, System.String sourceFiles, System.String sourceFilesHash) (at /Users/builduser/buildslave/unity/build/PlatformDependent/WebGL/Extensions/Unity.WebGL.extensions/BuildPostprocessor.cs:446)
    UnityEditor.WebGL.WebGlBuildPostprocessor.LinkBuild (UnityEditor.Modules.BuildPostProcessArgs args) (at /Users/builduser/buildslave/unity/build/PlatformDependent/WebGL/Extensions/Unity.WebGL.extensions/BuildPostprocessor.cs:496)
    UnityEditor.WebGL.WebGlBuildPostprocessor.PostProcess (UnityEditor.Modules.BuildPostProcessArgs args) (at /Users/builduser/buildslave/unity/build/PlatformDependent/WebGL/Extensions/Unity.WebGL.extensions/BuildPostprocessor.cs:931)
    UnityEditor.Modules.DefaultBuildPostprocessor.PostProcess (UnityEditor.Modules.BuildPostProcessArgs args, UnityEditor.BuildProperties& outProperties) (at C:/buildslave/unity/build/Editor/Mono/Modules/DefaultBuildPostprocessor.cs:27)
    UnityEditor.PostprocessBuildPlayer.Postprocess (UnityEditor.BuildTargetGroup targetGroup, UnityEditor.BuildTarget target, System.String installPath, System.String companyName, System.String productName, System.Int32 width, System.Int32 height, UnityEditor.BuildOptions options, UnityEditor.RuntimeClassRegistry usedClassRegistry, UnityEditor.Build.Reporting.BuildReport report) (at C:/buildslave/unity/build/Editor/Mono/BuildPipeline/PostprocessBuildPlayer.cs:281)
    UnityEngine.GUIUtility:processEvent(Int32, IntPtr) (at C:/buildslave/unity/build/Modules/IMGUI/GUIUtility.cs:179)

    Build completed with a result of 'Failed'
    UnityEngine.GUIUtility:processEvent(Int32, IntPtr) (at C:/buildslave/unity/build/Modules/IMGUI/GUIUtility.cs:179)

    UnityEditor.BuildPlayerWindow+BuildMethodException: 3 errors
    at UnityEditor.BuildPlayerWindow+DefaultBuildMethods.BuildPlayer (UnityEditor.BuildPlayerOptions options) [0x00242] in C:\buildslave\unity\build\Editor\Mono\BuildPlayerWindowBuildMethods.cs:190
    at UnityEditor.BuildPlayerWindow.CallBuildMethods (System.Boolean askForBuildLocation, UnityEditor.BuildOptions defaultBuildOptions) [0x0007f] in C:\buildslave\unity\build\Editor\Mono\BuildPlayerWindowBuildMethods.cs:95
    UnityEngine.GUIUtility:processEvent(Int32, IntPtr) (at C:/buildslave/unity/build/Modules/IMGUI/GUIUtility.cs:179)
     
    hudmond, Oct 19, 2019
    #3

  4. jukka_j

    jukka_j

    Unity Technologies

    Joined:
    May 4, 2018
    Posts:
    953
    The error "Assertion failed: *task.currp" looks like an internal Emscripten compiler error. (Emscripten is the native->web compiler toolchain that Unity uses). Does that error occur on all projects you try to build to wasm? If it is only in your project, that can mean there is something specific to the code in your project that is unexpected to the asm2wasm compiler.

    If empty project builds ok to WebGL, one thing you can try is to start removing C# content from the build until you find what the offending C# construct is. (and then work around and/or report a bug)
     
    jukka_j, Oct 20, 2019
    #4

  5. hudmond

    hudmond

    Joined:
    Jun 24, 2019
    Posts:
    5
    It does this with empty projects sometimes. Or projects with just a plane and a cube for instance. Sometimes a project will compile 8 times in a row successfully, and then fail the next 15 attempts in a row to where I give up and go try to create a new project and try to build it out and experience the same thing in a fresh project.
     
    hudmond, Oct 21, 2019
    #5

  6. jukka_j

    jukka_j

    Unity Technologies

    Joined:
    May 4, 2018
    Posts:
    953
    That is very odd indeed. Any patterns to different Unity versions you would have noticed? The crash comes from this line: https://github.com/WebAssembly/bina...f7345ebcacf6d7deee5/src/wasm-traversal.h#L671 , though if it sometimes succeeds on the same input and other times fails, that sounds like some kind of corruption occurring. I'll consult with asm2wasm authors if they have seen this kind of behavior happen.
     
    jukka_j, Oct 22, 2019
    #6

  7. hudmond

    hudmond

    Joined:
    Jun 24, 2019
    Posts:
    5
    Seems to happen with every unity version I try (I even tried with 2018 at one point and had similar happen I think)
     
    hudmond, Oct 22, 2019
    #7