AllWebProjectsRestoreAndBuild failing to new F# projects

[Forgind]

Build Information

Build: https://dev.azure.com/dnceng-public/cbb18261-c48f-4abb-8651-8cdcb5474649/_build/results?buildId=629731
Build error leg or test failing: Microsoft.DotNet.Cli.New.IntegrationTests.WebProjectsTests.AllWebProjectsRestoreAndBuild
Pull request: https://github.com/dotnet/sdk.git/pull/40003

Error Message

Expected command to exit with 0 but it did not.
File Name: /mnt/vss/_work/1/s/artifacts/bin/redist/Release/dotnet/dotnet
Arguments: new mvc -lang F# -f net6.0 --debug:custom-hive /mnt/vss/_work/1/s/artifacts/tmp/Release/dotnet-new.IntegrationTests/SharedHomeDirectory/20240404001806267
Exit Code: 134
StdOut:

StdErr:
Process terminated. Assertion failed.
Unbalanced condition
   at Microsoft.TemplateEngine.Core.Expressions.Cpp.CppStyleEvaluatorDefinition.EvaluateCondition(IReadOnlyList`1 tokens, IReadOnlyList`1 values)
   at Microsoft.TemplateEngine.Core.Expressions.Cpp.CppStyleEvaluatorDefinition.Evaluate(IProcessorState processor, Int32& bufferLength, Int32& currentBufferPosition, Boolean& faulted)
   at Microsoft.TemplateEngine.Core.Operations.Conditional.Implementation.EvaluationState.Evaluate(IProcessorState processor, Int32& bufferLength, Int32& currentBufferPosition)
   at Microsoft.TemplateEngine.Core.Operations.Conditional.Implementation.HandleMatch(IProcessorState processor, Int32 bufferLength, Int32& currentBufferPosition, Int32 token)
   at Microsoft.TemplateEngine.Core.Util.ProcessorState.Run()
   at Microsoft.TemplateEngine.Core.Util.Processor.Run(Stream source, Stream target, Int32 bufferSize, Int32 flushThreshold)
   at Microsoft.TemplateEngine.Core.Util.Processor.Run(Stream source, Stream target, Int32 bufferSize)
   at Microsoft.TemplateEngine.Core.Util.Processor.Run(Stream source, Stream target)
   at Microsoft.TemplateEngine.Core.Util.Orchestrator.ProcessFile(IFile sourceFile, String sourceRel, String targetDir, IGlobalRunSpec spec, IProcessor fallback, IEnumerable`1 fileGlobProcessors)
   at Microsoft.TemplateEngine.Core.Util.Orchestrator.RunInternal(IDirectory sourceDir, String targetDir, IGlobalRunSpec spec)
   at Microsoft.TemplateEngine.Core.Util.Orchestrator.Run(IGlobalRunSpec spec, IDirectory sourceDir, String targetDir)
   at Microsoft.TemplateEngine.Orchestrator.RunnableProjects.RunnableProjectOrchestrator.Run(IGlobalRunSpec runSpec, IDirectory directoryInfo, String target)
   at Microsoft.TemplateEngine.Orchestrator.RunnableProjects.RunnableProjectGenerator.CreateAsync(IEngineEnvironmentSettings environmentSettings, IRunnableProjectConfig runnableProjectConfig, IDirectory templateSourceRoot, IParameterSetData parameters, String targetDirectory, CancellationToken cancellationToken)
   at System.Runtime.CompilerServices.AsyncMethodBuilderCore.Start[TStateMachine](TStateMachine& stateMachine)
   at Microsoft.TemplateEngine.Orchestrator.RunnableProjects.RunnableProjectGenerator.CreateAsync(IEngineEnvironmentSettings environmentSettings, IRunnableProjectConfig runnableProjectConfig, IDirectory templateSourceRoot, IParameterSetData parameters, String targetDirectory, CancellationToken cancellationToken)
   at Microsoft.TemplateEngine.Orchestrator.RunnableProjects.RunnableProjectGenerator.Microsoft.TemplateEngine.Abstractions.IGenerator.CreateAsync(IEngineEnvironmentSettings environmentSettings, ITemplate templateData, IParameterSetData parameters, String targetDirectory, CancellationToken cancellationToken)
   at Microsoft.TemplateEngine.Edge.Template.TemplateCreator.InstantiateAsync(ITemplateInfo templateInfo, String name, String fallbackName, String outputPath, InputDataSet inputParameters, Boolean forceCreation, String baselineName, Boolean dryRun, CancellationToken cancellationToken)
   at System.Runtime.CompilerServices.AsyncMethodBuilderCore.Start[TStateMachine](TStateMachine& stateMachine)
   at Microsoft.TemplateEngine.Edge.Template.TemplateCreator.InstantiateAsync(ITemplateInfo templateInfo, String name, String fallbackName, String outputPath, InputDataSet inputParameters, Boolean forceCreation, String baselineName, Boolean dryRun, CancellationToken cancellationToken)
   at Microsoft.TemplateEngine.Edge.Template.TemplateCreator.InstantiateAsync(ITemplateInfo templateInfo, String name, String fallbackName, String outputPath, IReadOnlyDictionary`2 inputParameters, Boolean forceCreation, String baselineName, Boolean dryRun, CancellationToken cancellationToken)
   at Microsoft.TemplateEngine.Cli.TemplateInvoker.CreateTemplateAsync(TemplateCommandArgs templateArgs, CancellationToken cancellationToken) in /_/src/Cli/Microsoft.TemplateEngine.Cli/TemplateInvoker.cs:line 160
   at System.Runtime.CompilerServices.AsyncMethodBuilderCore.Start[TStateMachine](TStateMachine& stateMachine)
   at Microsoft.TemplateEngine.Cli.TemplateInvoker.CreateTemplateAsync(TemplateCommandArgs templateArgs, CancellationToken cancellationToken)
   at Microsoft.TemplateEngine.Cli.TemplateInvoker.InvokeTemplateAsync(TemplateCommandArgs templateArgs, CancellationToken cancellationToken) in /_/src/Cli/Microsoft.TemplateEngine.Cli/TemplateInvoker.cs:line 60
   at System.Runtime.CompilerServices.AsyncMethodBuilderCore.Start[TStateMachine](TStateMachine& stateMachine)
   at Microsoft.TemplateEngine.Cli.TemplateInvoker.InvokeTemplateAsync(TemplateCommandArgs templateArgs, CancellationToken cancellationToken)
   at Microsoft.TemplateEngine.Cli.Commands.TemplateCommand.InvokeAsync(ParseResult parseResult, CancellationToken cancellationToken) in /_/src/Cli/Microsoft.TemplateEngine.Cli/Commands/create/TemplateCommand.cs:line 171
   at System.Runtime.CompilerServices.AsyncMethodBuilderCore.Start[TStateMachine](TStateMachine& stateMachine)
   at Microsoft.TemplateEngine.Cli.Commands.TemplateCommand.InvokeAsync(ParseResult parseResult, CancellationToken cancellationToken)
   at Microsoft.TemplateEngine.Cli.Commands.InstantiateCommand.HandleTemplateInstantiationAsync(InstantiateCommandArgs args, IEngineEnvironmentSettings environmentSettings, TemplatePackageManager templatePackageManager, TemplateGroup templateGroup, CancellationToken cancellationToken) in /_/src/Cli/Microsoft.TemplateEngine.Cli/Commands/create/InstantiateCommand.cs:line 279
   at System.Runtime.CompilerServices.AsyncMethodBuilderCore.Start[TStateMachine](TStateMachine& stateMachine)
   at Microsoft.TemplateEngine.Cli.Commands.InstantiateCommand.HandleTemplateInstantiationAsync(InstantiateCommandArgs args, IEngineEnvironmentSettings environmentSettings, TemplatePackageManager templatePackageManager, TemplateGroup templateGroup, CancellationToken cancellationToken)
   at Microsoft.TemplateEngine.Cli.Commands.InstantiateCommand.ExecuteIntAsync(InstantiateCommandArgs instantiateArgs, IEngineEnvironmentSettings environmentSettings, TemplatePackageManager templatePackageManager, ParseResult parseResult, CancellationToken cancellationToken) in /_/src/Cli/Microsoft.TemplateEngine.Cli/Commands/create/InstantiateCommand.cs:line 223
   at System.Runtime.CompilerServices.AsyncMethodBuilderCore.Start[TStateMachine](TStateMachine& stateMachine)
   at Microsoft.TemplateEngine.Cli.Commands.InstantiateCommand.ExecuteIntAsync(InstantiateCommandArgs instantiateArgs, IEngineEnvironmentSettings environmentSettings, TemplatePackageManager templatePackageManager, ParseResult parseResult, CancellationToken cancellationToken)
   at Microsoft.TemplateEngine.Cli.Commands.InstantiateCommand.ExecuteAsync(NewCommandArgs newCommandArgs, IEngineEnvironmentSettings environmentSettings, TemplatePackageManager templatePackageManager, ParseResult parseResult, CancellationToken cancellationToken) in /_/src/Cli/Microsoft.TemplateEngine.Cli/Commands/create/InstantiateCommand.cs:line 68
   at Microsoft.TemplateEngine.Cli.Commands.NewCommand.ExecuteAsync(NewCommandArgs args, IEngineEnvironmentSettings environmentSettings, TemplatePackageManager templatePackageManager, ParseResult parseResult, CancellationToken cancellationToken) in /_/src/Cli/Microsoft.TemplateEngine.Cli/Commands/NewCommand.cs:line 157
   at Microsoft.TemplateEngine.Cli.Commands.BaseCommand`1.CommandAction.InvokeAsync(ParseResult parseResult, CancellationToken cancellationToken) in /_/src/Cli/Microsoft.TemplateEngine.Cli/Commands/BaseCommand.cs:line 242
   at System.Runtime.CompilerServices.AsyncMethodBuilderCore.Start[TStateMachine](TStateMachine& stateMachine)
   at Microsoft.TemplateEngine.Cli.Commands.BaseCommand`1.CommandAction.InvokeAsync(ParseResult parseResult, CancellationToken cancellationToken)
   at System.CommandLine.Invocation.InvocationPipeline.InvokeAsync(ParseResult parseResult, CancellationToken cancellationToken)
   at System.Runtime.CompilerServices.AsyncMethodBuilderCore.Start[TStateMachine](TStateMachine& stateMachine)
   at System.CommandLine.Invocation.InvocationPipeline.InvokeAsync(ParseResult parseResult, CancellationToken cancellationToken)
   at System.CommandLine.ParseResult.Invoke()
   at Microsoft.DotNet.Cli.Program.ProcessArgs(String[] args, TimeSpan startupTime, ITelemetry telemetryClient) in /_/src/Cli/dotnet/Program.cs:line 233
   at Microsoft.DotNet.Cli.Program.Main(String[] args) in /_/src/Cli/dotnet/Program.cs:line 74

Fill the error message using step by step known issues guidance.

{
  "ErrorMessage": "at Microsoft.TemplateEngine.Core.Expressions.Cpp.CppStyleEvaluatorDefinition",
  "BuildRetry": false,
  "ExcludeConsoleLog": false
}

Report

Summary

24-Hour Hit Count	7-Day Hit Count	1-Month Count
0	0	0

Known issue validation

Build: 🔎 https://dev.azure.com/dnceng-public/public/_build/results?buildId=629731
Error message validated: [Arguments: new mvc -lang F#.*Exit Code: 134.*Unbalanced condition]
Result validation: ❌ Known issue did not match with the provided build.
Validation performed at: 4/8/2024 7:03:29 PM UTC

[baronfel]

@DamianEdwards did the MVC templates for F# change recently? The template engine seems to use a) trying to use C++-style comment detection and b) finding some sort of grammar error in the conditional used, so I'm wondering if there's been a change in the content that might cause it. If not, then the template engine would need to be looked into.

[MiYanni]

It doesn't seem to be collecting the failure PR builds appropriately. I'm closing and opening a new one.

[MiYanni]

New issue: #40071

Didn't work again. Gonna keep trying this until I figure out how it works.

Got it working: #40073