AccessViolationException running dotnet-coverage merge

[martincostello]

I couldn't find the source from the stack trace, so I assume it's closed source somewhere and this was the best place to report the issue.

On a CI run for OpenTelemetry.NET, we had a job randomly fail with an error I'd never seen before from dotnet-coverage merge (logs):

Fatal error. System.AccessViolationException: Attempted to read or write protected memory. This is often an indication that other memory is corrupt.
   at Microsoft.CodeCoverage.Core.Reports.Cobertura.CoberturaLine.Serialize()
   at Microsoft.CodeCoverage.Core.Reports.Cobertura.CoberturaClass+<>c.<Serialize>b__23_1(Microsoft.CodeCoverage.Core.Reports.Cobertura.CoberturaLine)
   at System.Linq.Enumerable+SelectArrayIterator`2[[System.__Canon, System.Private.CoreLib, Version=8.0.0.0, Culture=neutral, PublicKeyToken=7cec85d7bea7798e],[System.__Canon, System.Private.CoreLib, Version=8.0.0.0, Culture=neutral, PublicKeyToken=7cec85d7bea7798e]].MoveNext()
   at System.Xml.Linq.XContainer.AddContentSkipNotify(System.Object)
   at System.Xml.Linq.XContainer.AddContentSkipNotify(System.Object)
   at System.Xml.Linq.XContainer.AddContentSkipNotify(System.Object)
   at Microsoft.CodeCoverage.Core.Reports.Cobertura.CoberturaClass.Serialize()
   at Microsoft.CodeCoverage.Core.Reports.Cobertura.CoberturaPackage+<>c.<Serialize>b__13_0(Microsoft.CodeCoverage.Core.Reports.Cobertura.CoberturaClass)
   at System.Linq.Enumerable+SelectArrayIterator`2[[System.__Canon, System.Private.CoreLib, Version=8.0.0.0, Culture=neutral, PublicKeyToken=7cec85d7bea7798e],[System.__Canon, System.Private.CoreLib, Version=8.0.0.0, Culture=neutral, PublicKeyToken=7cec85d7bea7798e]].MoveNext()
   at System.Xml.Linq.XContainer.AddContentSkipNotify(System.Object)
   at System.Xml.Linq.XContainer.AddContentSkipNotify(System.Object)
   at Microsoft.CodeCoverage.Core.Reports.Cobertura.CoberturaPackage.Serialize()
   at Microsoft.CodeCoverage.Core.Reports.Cobertura.CoberturaFile+<>c.<Serialize>b__48_1(Microsoft.CodeCoverage.Core.Reports.Cobertura.CoberturaPackage)
   at System.Linq.Enumerable+SelectListIterator`2[[System.__Canon, System.Private.CoreLib, Version=8.0.0.0, Culture=neutral, PublicKeyToken=7cec85d7bea7798e],[System.__Canon, System.Private.CoreLib, Version=8.0.0.0, Culture=neutral, PublicKeyToken=7cec85d7bea7798e]].MoveNext()
   at System.Xml.Linq.XContainer.AddContentSkipNotify(System.Object)
   at System.Xml.Linq.XContainer.AddContentSkipNotify(System.Object)
   at Microsoft.CodeCoverage.Core.Reports.Cobertura.CoberturaFile.Serialize()
   at Microsoft.CodeCoverage.Core.Utils.XmlUtils.Write(System.String, System.Func`1<System.Xml.Linq.XElement>)
   at Microsoft.CodeCoverage.Core.Utils.XmlUtils.Write(System.String, Microsoft.CodeCoverage.Core.Reports.Cobertura.CoberturaFile)
   at Microsoft.CodeCoverage.Core.Reports.ReportsMerger+<MergeReportsInternal>d__6.MoveNext()
   at System.Runtime.CompilerServices.AsyncMethodBuilderCore.Start[[Microsoft.CodeCoverage.Core.Reports.ReportsMerger+<MergeReportsInternal>d__6, Microsoft.CodeCoverage.Core, Version=18.1.0.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a]](<MergeReportsInternal>d__6 ByRef)
   at System.Runtime.CompilerServices.AsyncTaskMethodBuilder`1[[System.__Canon, System.Private.CoreLib, Version=8.0.0.0, Culture=neutral, PublicKeyToken=7cec85d7bea7798e]].Start[[Microsoft.CodeCoverage.Core.Reports.ReportsMerger+<MergeReportsInternal>d__6, Microsoft.CodeCoverage.Core, Version=18.1.0.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a]](<MergeReportsInternal>d__6 ByRef)
   at Microsoft.CodeCoverage.Core.Reports.ReportsMerger.MergeReportsInternal(Microsoft.CodeCoverage.Core.Reports.ReportsContainer, System.String, Microsoft.CodeCoverage.Core.CoverageMergeOperation, System.Threading.CancellationToken)
   at Microsoft.CodeCoverage.Core.Reports.ReportsMerger+<MergeReports>d__5.MoveNext()
   at System.Runtime.CompilerServices.AsyncMethodBuilderCore.Start[[Microsoft.CodeCoverage.Core.Reports.ReportsMerger+<MergeReports>d__5, Microsoft.CodeCoverage.Core, Version=18.1.0.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a]](<MergeReports>d__5 ByRef)
   at System.Runtime.CompilerServices.AsyncTaskMethodBuilder`1[[System.__Canon, System.Private.CoreLib, Version=8.0.0.0, Culture=neutral, PublicKeyToken=7cec85d7bea7798e]].Start[[Microsoft.CodeCoverage.Core.Reports.ReportsMerger+<MergeReports>d__5, Microsoft.CodeCoverage.Core, Version=18.1.0.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a]](<MergeReports>d__5 ByRef)
   at Microsoft.CodeCoverage.Core.Reports.ReportsMerger.MergeReports(Microsoft.CodeCoverage.Core.Reports.ReportsContainer, System.String, Microsoft.CodeCoverage.Core.CoverageMergeOperation, System.Threading.CancellationToken)
   at Microsoft.CodeCoverage.Console.Common.Commands.MergeCommandHandler+<MergeReportsAsync>d__8.MoveNext()
   at System.Runtime.CompilerServices.AsyncMethodBuilderCore.Start[[Microsoft.CodeCoverage.Console.Common.Commands.MergeCommandHandler+<MergeReportsAsync>d__8, Microsoft.CodeCoverage.Console.Common, Version=18.1.0.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a]](<MergeReportsAsync>d__8 ByRef)
   at System.Runtime.CompilerServices.AsyncTaskMethodBuilder.Start[[Microsoft.CodeCoverage.Console.Common.Commands.MergeCommandHandler+<MergeReportsAsync>d__8, Microsoft.CodeCoverage.Console.Common, Version=18.1.0.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a]](<MergeReportsAsync>d__8 ByRef)
   at Microsoft.CodeCoverage.Console.Common.Commands.MergeCommandHandler.MergeReportsAsync(Boolean, System.String, Microsoft.CodeCoverage.Core.CoverageReportType, Boolean, System.String[], Microsoft.CodeCoverage.Console.Common.IReportsReaderLoggerWithInput, Microsoft.CodeCoverage.Console.Common.Interfaces.IConsoleUtils, System.Threading.CancellationToken)
   at Microsoft.CodeCoverage.Console.Common.Commands.MergeCommandHandler+<InvokeAsync>d__6.MoveNext()
   at System.Runtime.CompilerServices.AsyncMethodBuilderCore.Start[[Microsoft.CodeCoverage.Console.Common.Commands.MergeCommandHandler+<InvokeAsync>d__6, Microsoft.CodeCoverage.Console.Common, Version=18.1.0.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a]](<InvokeAsync>d__6 ByRef)
   at System.Runtime.CompilerServices.AsyncTaskMethodBuilder`1[[System.Int32, System.Private.CoreLib, Version=8.0.0.0, Culture=neutral, PublicKeyToken=7cec85d7bea7798e]].Start[[Microsoft.CodeCoverage.Console.Common.Commands.MergeCommandHandler+<InvokeAsync>d__6, Microsoft.CodeCoverage.Console.Common, Version=18.1.0.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a]](<InvokeAsync>d__6 ByRef)
   at Microsoft.CodeCoverage.Console.Common.Commands.MergeCommandHandler.InvokeAsync(System.String[], Boolean, Boolean, Microsoft.CodeCoverage.Console.Common.Commands.CommonOptions)
   at Microsoft.CodeCoverage.Console.Common.Commands.MergeCommandBuilder.InvokeAsync(System.CommandLine.Invocation.InvocationContext)
   at System.CommandLine.Invocation.InvocationPipeline+<>c__DisplayClass4_0+<<BuildInvocationChain>b__0>d.MoveNext()
   at System.Runtime.CompilerServices.AsyncMethodBuilderCore.Start[[System.CommandLine.Invocation.InvocationPipeline+<>c__DisplayClass4_0+<<BuildInvocationChain>b__0>d, System.CommandLine, Version=2.0.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35]](<<BuildInvocationChain>b__0>d ByRef)
   at System.Runtime.CompilerServices.AsyncTaskMethodBuilder.Start[[System.CommandLine.Invocation.InvocationPipeline+<>c__DisplayClass4_0+<<BuildInvocationChain>b__0>d, System.CommandLine, Version=2.0.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35]](<<BuildInvocationChain>b__0>d ByRef)
   at System.CommandLine.Invocation.InvocationPipeline+<>c__DisplayClass4_0.<BuildInvocationChain>b__0(System.CommandLine.Invocation.InvocationContext, System.Func`2<System.CommandLine.Invocation.InvocationContext,System.Threading.Tasks.Task>)
   at System.CommandLine.Invocation.InvocationPipeline+<>c__DisplayClass4_2.<BuildInvocationChain>b__3(System.CommandLine.Invocation.InvocationContext)
   at System.CommandLine.CommandLineBuilderExtensions+<>c__DisplayClass16_0+<<UseParseErrorReporting>b__0>d.MoveNext()
   at System.Runtime.CompilerServices.AsyncMethodBuilderCore.Start[[System.CommandLine.CommandLineBuilderExtensions+<>c__DisplayClass16_0+<<UseParseErrorReporting>b__0>d, System.CommandLine, Version=2.0.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35]](<<UseParseErrorReporting>b__0>d ByRef)
   at System.Runtime.CompilerServices.AsyncTaskMethodBuilder.Start[[System.CommandLine.CommandLineBuilderExtensions+<>c__DisplayClass16_0+<<UseParseErrorReporting>b__0>d, System.CommandLine, Version=2.0.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35]](<<UseParseErrorReporting>b__0>d ByRef)
   at System.CommandLine.CommandLineBuilderExtensions+<>c__DisplayClass16_0.<UseParseErrorReporting>b__0(System.CommandLine.Invocation.InvocationContext, System.Func`2<System.CommandLine.Invocation.InvocationContext,System.Threading.Tasks.Task>)
   at System.CommandLine.Invocation.InvocationPipeline+<>c__DisplayClass4_2.<BuildInvocationChain>b__3(System.CommandLine.Invocation.InvocationContext)
   at System.CommandLine.CommandLineBuilderExtensions+<>c__DisplayClass11_0+<<UseHelp>b__0>d.MoveNext()
   at System.Runtime.CompilerServices.AsyncMethodBuilderCore.Start[[System.CommandLine.CommandLineBuilderExtensions+<>c__DisplayClass11_0+<<UseHelp>b__0>d, System.CommandLine, Version=2.0.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35]](<<UseHelp>b__0>d ByRef)
   at System.Runtime.CompilerServices.AsyncTaskMethodBuilder.Start[[System.CommandLine.CommandLineBuilderExtensions+<>c__DisplayClass11_0+<<UseHelp>b__0>d, System.CommandLine, Version=2.0.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35]](<<UseHelp>b__0>d ByRef)
   at System.CommandLine.CommandLineBuilderExtensions+<>c__DisplayClass11_0.<UseHelp>b__0(System.CommandLine.Invocation.InvocationContext, System.Func`2<System.CommandLine.Invocation.InvocationContext,System.Threading.Tasks.Task>)
   at System.CommandLine.Invocation.InvocationPipeline+<>c__DisplayClass4_2.<BuildInvocationChain>b__3(System.CommandLine.Invocation.InvocationContext)
   at System.CommandLine.CommandLineBuilderExtensions+<>c__DisplayClass21_0+<<UseVersionOption>b__0>d.MoveNext()
   at System.Runtime.CompilerServices.AsyncMethodBuilderCore.Start[[System.CommandLine.CommandLineBuilderExtensions+<>c__DisplayClass21_0+<<UseVersionOption>b__0>d, System.CommandLine, Version=2.0.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35]](<<UseVersionOption>b__0>d ByRef)
   at System.Runtime.CompilerServices.AsyncTaskMethodBuilder.Start[[System.CommandLine.CommandLineBuilderExtensions+<>c__DisplayClass21_0+<<UseVersionOption>b__0>d, System.CommandLine, Version=2.0.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35]](<<UseVersionOption>b__0>d ByRef)
   at System.CommandLine.CommandLineBuilderExtensions+<>c__DisplayClass21_0.<UseVersionOption>b__0(System.CommandLine.Invocation.InvocationContext, System.Func`2<System.CommandLine.Invocation.InvocationContext,System.Threading.Tasks.Task>)
   at System.CommandLine.Invocation.InvocationPipeline+<>c__DisplayClass4_2.<BuildInvocationChain>b__3(System.CommandLine.Invocation.InvocationContext)
   at System.CommandLine.CommandLineBuilderExtensions+<>c__DisplayClass18_0+<<UseTypoCorrections>b__0>d.MoveNext()
   at System.Runtime.CompilerServices.AsyncMethodBuilderCore.Start[[System.CommandLine.CommandLineBuilderExtensions+<>c__DisplayClass18_0+<<UseTypoCorrections>b__0>d, System.CommandLine, Version=2.0.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35]](<<UseTypoCorrections>b__0>d ByRef)
   at System.Runtime.CompilerServices.AsyncTaskMethodBuilder.Start[[System.CommandLine.CommandLineBuilderExtensions+<>c__DisplayClass18_0+<<UseTypoCorrections>b__0>d, System.CommandLine, Version=2.0.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35]](<<UseTypoCorrections>b__0>d ByRef)
   at System.CommandLine.CommandLineBuilderExtensions+<>c__DisplayClass18_0.<UseTypoCorrections>b__0(System.CommandLine.Invocation.InvocationContext, System.Func`2<System.CommandLine.Invocation.InvocationContext,System.Threading.Tasks.Task>)
   at System.CommandLine.Invocation.InvocationPipeline+<>c__DisplayClass4_2.<BuildInvocationChain>b__3(System.CommandLine.Invocation.InvocationContext)
   at System.CommandLine.CommandLineBuilderExtensions+<>c+<<UseSuggestDirective>b__17_0>d.MoveNext()
   at System.Runtime.CompilerServices.AsyncMethodBuilderCore.Start[[System.CommandLine.CommandLineBuilderExtensions+<>c+<<UseSuggestDirective>b__17_0>d, System.CommandLine, Version=2.0.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35]](<<UseSuggestDirective>b__17_0>d ByRef)
   at System.Runtime.CompilerServices.AsyncTaskMethodBuilder.Start[[System.CommandLine.CommandLineBuilderExtensions+<>c+<<UseSuggestDirective>b__17_0>d, System.CommandLine, Version=2.0.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35]](<<UseSuggestDirective>b__17_0>d ByRef)
   at System.CommandLine.CommandLineBuilderExtensions+<>c.<UseSuggestDirective>b__17_0(System.CommandLine.Invocation.InvocationContext, System.Func`2<System.CommandLine.Invocation.InvocationContext,System.Threading.Tasks.Task>)
   at System.CommandLine.Invocation.InvocationPipeline+<>c__DisplayClass4_2.<BuildInvocationChain>b__3(System.CommandLine.Invocation.InvocationContext)
   at System.CommandLine.CommandLineBuilderExtensions+<>c__DisplayClass15_0+<<UseParseDirective>b__0>d.MoveNext()
   at System.Runtime.CompilerServices.AsyncMethodBuilderCore.Start[[System.CommandLine.CommandLineBuilderExtensions+<>c__DisplayClass15_0+<<UseParseDirective>b__0>d, System.CommandLine, Version=2.0.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35]](<<UseParseDirective>b__0>d ByRef)
   at System.Runtime.CompilerServices.AsyncTaskMethodBuilder.Start[[System.CommandLine.CommandLineBuilderExtensions+<>c__DisplayClass15_0+<<UseParseDirective>b__0>d, System.CommandLine, Version=2.0.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35]](<<UseParseDirective>b__0>d ByRef)
   at System.CommandLine.CommandLineBuilderExtensions+<>c__DisplayClass15_0.<UseParseDirective>b__0(System.CommandLine.Invocation.InvocationContext, System.Func`2<System.CommandLine.Invocation.InvocationContext,System.Threading.Tasks.Task>)
   at System.CommandLine.Invocation.InvocationPipeline+<>c__DisplayClass4_2.<BuildInvocationChain>b__3(System.CommandLine.Invocation.InvocationContext)
   at System.CommandLine.CommandLineBuilderExtensions+<>c+<<RegisterWithDotnetSuggest>b__4_0>d.MoveNext()
   at System.Runtime.CompilerServices.AsyncMethodBuilderCore.Start[[System.CommandLine.CommandLineBuilderExtensions+<>c+<<RegisterWithDotnetSuggest>b__4_0>d, System.CommandLine, Version=2.0.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35]](<<RegisterWithDotnetSuggest>b__4_0>d ByRef)
   at System.Runtime.CompilerServices.AsyncTaskMethodBuilder.Start[[System.CommandLine.CommandLineBuilderExtensions+<>c+<<RegisterWithDotnetSuggest>b__4_0>d, System.CommandLine, Version=2.0.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35]](<<RegisterWithDotnetSuggest>b__4_0>d ByRef)
   at System.CommandLine.CommandLineBuilderExtensions+<>c.<RegisterWithDotnetSuggest>b__4_0(System.CommandLine.Invocation.InvocationContext, System.Func`2<System.CommandLine.Invocation.InvocationContext,System.Threading.Tasks.Task>)
   at System.CommandLine.Invocation.InvocationPipeline+<>c__DisplayClass4_2.<BuildInvocationChain>b__3(System.CommandLine.Invocation.InvocationContext)
   at System.CommandLine.CommandLineBuilderExtensions+<>c.<UseEnvironmentVariableDirective>b__5_0(System.CommandLine.Invocation.InvocationContext, System.Func`2<System.CommandLine.Invocation.InvocationContext,System.Threading.Tasks.Task>)
   at System.CommandLine.Invocation.InvocationPipeline+<>c__DisplayClass4_2.<BuildInvocationChain>b__3(System.CommandLine.Invocation.InvocationContext)
   at System.CommandLine.CommandLineBuilderExtensions+<>c__DisplayClass7_0+<<UseExceptionHandler>b__0>d.MoveNext()
   at System.Runtime.CompilerServices.AsyncMethodBuilderCore.Start[[System.CommandLine.CommandLineBuilderExtensions+<>c__DisplayClass7_0+<<UseExceptionHandler>b__0>d, System.CommandLine, Version=2.0.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35]](<<UseExceptionHandler>b__0>d ByRef)
   at System.Runtime.CompilerServices.AsyncTaskMethodBuilder.Start[[System.CommandLine.CommandLineBuilderExtensions+<>c__DisplayClass7_0+<<UseExceptionHandler>b__0>d, System.CommandLine, Version=2.0.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35]](<<UseExceptionHandler>b__0>d ByRef)
   at System.CommandLine.CommandLineBuilderExtensions+<>c__DisplayClass7_0.<UseExceptionHandler>b__0(System.CommandLine.Invocation.InvocationContext, System.Func`2<System.CommandLine.Invocation.InvocationContext,System.Threading.Tasks.Task>)
   at System.CommandLine.Invocation.InvocationPipeline+<>c__DisplayClass4_2.<BuildInvocationChain>b__3(System.CommandLine.Invocation.InvocationContext)
   at System.CommandLine.CommandLineBuilderExtensions+<>c__DisplayClass1_0+<<CancelOnProcessTermination>b__0>d.MoveNext()
   at System.Runtime.CompilerServices.AsyncMethodBuilderCore.Start[[System.CommandLine.CommandLineBuilderExtensions+<>c__DisplayClass1_0+<<CancelOnProcessTermination>b__0>d, System.CommandLine, Version=2.0.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35]](<<CancelOnProcessTermination>b__0>d ByRef)
   at System.Runtime.CompilerServices.AsyncTaskMethodBuilder.Start[[System.CommandLine.CommandLineBuilderExtensions+<>c__DisplayClass1_0+<<CancelOnProcessTermination>b__0>d, System.CommandLine, Version=2.0.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35]](<<CancelOnProcessTermination>b__0>d ByRef)
   at System.CommandLine.CommandLineBuilderExtensions+<>c__DisplayClass1_0.<CancelOnProcessTermination>b__0(System.CommandLine.Invocation.InvocationContext, System.Func`2<System.CommandLine.Invocation.InvocationContext,System.Threading.Tasks.Task>)
   at System.CommandLine.Invocation.InvocationPipeline+<>c__DisplayClass4_1.<BuildInvocationChain>b__2(System.CommandLine.Invocation.InvocationContext, System.Func`2<System.CommandLine.Invocation.InvocationContext,System.Threading.Tasks.Task>)
   at System.CommandLine.Invocation.InvocationPipeline+<>c__DisplayClass4_1.<BuildInvocationChain>b__2(System.CommandLine.Invocation.InvocationContext, System.Func`2<System.CommandLine.Invocation.InvocationContext,System.Threading.Tasks.Task>)
   at System.CommandLine.Invocation.InvocationPipeline+<>c__DisplayClass4_1.<BuildInvocationChain>b__2(System.CommandLine.Invocation.InvocationContext, System.Func`2<System.CommandLine.Invocation.InvocationContext,System.Threading.Tasks.Task>)
   at System.CommandLine.Invocation.InvocationPipeline+<>c__DisplayClass4_1.<BuildInvocationChain>b__2(System.CommandLine.Invocation.InvocationContext, System.Func`2<System.CommandLine.Invocation.InvocationContext,System.Threading.Tasks.Task>)
   at System.CommandLine.Invocation.InvocationPipeline+<>c__DisplayClass4_1.<BuildInvocationChain>b__2(System.CommandLine.Invocation.InvocationContext, System.Func`2<System.CommandLine.Invocation.InvocationContext,System.Threading.Tasks.Task>)
   at System.CommandLine.Invocation.InvocationPipeline+<>c__DisplayClass4_1.<BuildInvocationChain>b__2(System.CommandLine.Invocation.InvocationContext, System.Func`2<System.CommandLine.Invocation.InvocationContext,System.Threading.Tasks.Task>)
   at System.CommandLine.Invocation.InvocationPipeline+<>c__DisplayClass4_1.<BuildInvocationChain>b__2(System.CommandLine.Invocation.InvocationContext, System.Func`2<System.CommandLine.Invocation.InvocationContext,System.Threading.Tasks.Task>)
   at System.CommandLine.Invocation.InvocationPipeline+<>c__DisplayClass4_1.<BuildInvocationChain>b__2(System.CommandLine.Invocation.InvocationContext, System.Func`2<System.CommandLine.Invocation.InvocationContext,System.Threading.Tasks.Task>)
   at System.CommandLine.Invocation.InvocationPipeline+<>c__DisplayClass4_1.<BuildInvocationChain>b__2(System.CommandLine.Invocation.InvocationContext, System.Func`2<System.CommandLine.Invocation.InvocationContext,System.Threading.Tasks.Task>)
   at System.CommandLine.Invocation.InvocationPipeline+<>c__DisplayClass4_1.<BuildInvocationChain>b__2(System.CommandLine.Invocation.InvocationContext, System.Func`2<System.CommandLine.Invocation.InvocationContext,System.Threading.Tasks.Task>)
   at System.CommandLine.Invocation.InvocationPipeline+<<InvokeAsync>g__FullInvocationChainAsync|2_0>d.MoveNext()
   at System.Runtime.CompilerServices.AsyncMethodBuilderCore.Start[[System.CommandLine.Invocation.InvocationPipeline+<<InvokeAsync>g__FullInvocationChainAsync|2_0>d, System.CommandLine, Version=2.0.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35]](<<InvokeAsync>g__FullInvocationChainAsync|2_0>d ByRef)
   at System.Runtime.CompilerServices.AsyncTaskMethodBuilder`1[[System.Int32, System.Private.CoreLib, Version=8.0.0.0, Culture=neutral, PublicKeyToken=7cec85d7bea7798e]].Start[[System.CommandLine.Invocation.InvocationPipeline+<<InvokeAsync>g__FullInvocationChainAsync|2_0>d, System.CommandLine, Version=2.0.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35]](<<InvokeAsync>g__FullInvocationChainAsync|2_0>d ByRef)
   at System.CommandLine.Invocation.InvocationPipeline.<InvokeAsync>g__FullInvocationChainAsync|2_0(System.CommandLine.Invocation.InvocationContext)
   at System.CommandLine.Invocation.InvocationPipeline.InvokeAsync(System.CommandLine.IConsole, System.Threading.CancellationToken)
   at System.CommandLine.CommandExtensions+<InvokeAsync>d__2.MoveNext()
   at System.Runtime.CompilerServices.AsyncMethodBuilderCore.Start[[System.CommandLine.CommandExtensions+<InvokeAsync>d__2, System.CommandLine, Version=2.0.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35]](<InvokeAsync>d__2 ByRef)
   at System.Runtime.CompilerServices.AsyncTaskMethodBuilder`1[[System.Int32, System.Private.CoreLib, Version=8.0.0.0, Culture=neutral, PublicKeyToken=7cec85d7bea7798e]].Start[[System.CommandLine.CommandExtensions+<InvokeAsync>d__2, System.CommandLine, Version=2.0.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35]](<InvokeAsync>d__2 ByRef)
   at System.CommandLine.CommandExtensions.InvokeAsync(System.CommandLine.Command, System.String[], System.CommandLine.IConsole, System.Threading.CancellationToken)
   at Microsoft.CodeCoverage.Console.Program.Main(System.String[])
   at Microsoft.CodeCoverage.Console.Program.<Main>(System.String[])

I assume something in the coverage data is tripping a bug with some native memory somewhere, but that's just me wildly speculating based on the stack trace and error message.

This appears to be a random transient error, so I don't have any concrete steps to reproduce.

[fhnaseer]

Can you provide coverage files you are trying to merge here?

I see that you are merging .coverage files into a cobertura file. You can generate cobertura files directly using dotnet test --collect "Code Coverage;Format=Cobertura" and then merge cobertura files together using dotnet-coverage merge. Some of the data is lost when converting reports from one format to another format.

[martincostello]

Not for the specific run that crashed, no.

You should be able to generate them yourself from the following command after cloning the repo:

dotnet test ./build/OpenTelemetry.proj --collect:"Code Coverage" --results-directory:TestResults --framework net9.0 --configuration Release -- RunConfiguration.DisableAppDomain=true

[fhnaseer]

I am not able to reproduce this.

Also, I see that there is only one coverage file. And you are converting it to cobertura format. I would highly recommend generating cobertura file directly and avoid one additional step of converting report.

[martincostello]

I am not able to reproduce this.

I figured that would be the case as this is the only time I'm seen the error in thousands of runs.

I don't know the history of why the CI is merging one file into itself just to convert it, but if it's leftover from a previous reason then we could optimise it to generate cobertura directly.