Test failure: NuGet.RestoreEx.targets at "NuGet.NoAllocEnumerateExtensions.OptimisticallyNonAllocatingEnumerable"

[steveharter]

Build Information

Build: https://dev.azure.com/dnceng/internal/_build/results?buildId=2529303&view=results

Build error leg or test failing: NuGet.RestoreEx.targets(19,5): error : Object reference not set to an instance of an object. [/Users/runner/work/1/s/Build.proj]

Stack trace:

/Users/runner/work/1/s/.dotnet/sdk/9.0.100-preview.7.24407.12/NuGet.RestoreEx.targets(19,5): error : Object reference not set to an instance of an object. [/Users/runner/work/1/s/Build.proj]
/Users/runner/work/1/s/.dotnet/sdk/9.0.100-preview.7.24407.12/NuGet.RestoreEx.targets(19,5): error :    at NuGet.NoAllocEnumerateExtensions.OptimisticallyNonAllocatingEnumerable`1.Enumerator..ctor(IEnumerable`1 source) [/Users/runner/work/1/s/Build.proj]
/Users/runner/work/1/s/.dotnet/sdk/9.0.100-preview.7.24407.12/NuGet.RestoreEx.targets(19,5): error :    at NuGet.Commands.PackageSpecificWarningProperties.AddRangeOfCodes(IEnumerable`1 codes, String libraryId, NuGetFramework framework) [/Users/runner/work/1/s/Build.proj]
/Users/runner/work/1/s/.dotnet/sdk/9.0.100-preview.7.24407.12/NuGet.RestoreEx.targets(19,5): error :    at NuGet.Commands.PackageSpecificWarningProperties.CreatePackageSpecificWarningProperties(PackageSpec packageSpec) [/Users/runner/work/1/s/Build.proj]
/Users/runner/work/1/s/.dotnet/sdk/9.0.100-preview.7.24407.12/NuGet.RestoreEx.targets(19,5): error :    at NuGet.Commands.RestoreCommand..ctor(RestoreRequest request) [/Users/runner/work/1/s/Build.proj]
/Users/runner/work/1/s/.dotnet/sdk/9.0.100-preview.7.24407.12/NuGet.RestoreEx.targets(19,5): error :    at NuGet.Commands.RestoreRunner.ExecuteAsync(RestoreSummaryRequest summaryRequest, CancellationToken token) [/Users/runner/work/1/s/Build.proj]
/Users/runner/work/1/s/.dotnet/sdk/9.0.100-preview.7.24407.12/NuGet.RestoreEx.targets(19,5): error :    at NuGet.Commands.RestoreRunner.ExecuteAndCommitAsync(RestoreSummaryRequest summaryRequest, IRestoreProgressReporter progressReporter, CancellationToken token) [/Users/runner/work/1/s/Build.proj]
/Users/runner/work/1/s/.dotnet/sdk/9.0.100-preview.7.24407.12/NuGet.RestoreEx.targets(19,5): error :    at NuGet.Commands.RestoreRunner.CompleteTaskAsync(List`1 restoreTasks) [/Users/runner/work/1/s/Build.proj]
/Users/runner/work/1/s/.dotnet/sdk/9.0.100-preview.7.24407.12/NuGet.RestoreEx.targets(19,5): error :    at NuGet.Commands.RestoreRunner.RunAsync(IEnumerable`1 restoreRequests, RestoreArgs restoreArgs, CancellationToken token) [/Users/runner/work/1/s/Build.proj]
/Users/runner/work/1/s/.dotnet/sdk/9.0.100-preview.7.24407.12/NuGet.RestoreEx.targets(19,5): error :    at NuGet.Commands.RestoreRunner.RunAsync(RestoreArgs restoreContext, CancellationToken token) [/Users/runner/work/1/s/Build.proj]
/Users/runner/work/1/s/.dotnet/sdk/9.0.100-preview.7.24407.12/NuGet.RestoreEx.targets(19,5): error :    at NuGet.Build.Tasks.BuildTasksUtility.RestoreAsync(DependencyGraphSpec dependencyGraphSpec, Boolean interactive, Boolean recursive, Boolean noCache, Boolean ignoreFailedSources, Boolean disableParallel, Boolean force, Boolean forceEvaluate, Boolean hideWarningsAndErrors, Boolean restorePC, Boolean cleanupAssetsForUnsupportedProjects, ILogger log, CancellationToken cancellationToken) [/Users/runner/work/1/s/Build.proj]
/Users/runner/work/1/s/.dotnet/sdk/9.0.100-preview.7.24407.12/NuGet.RestoreEx.targets(19,5): error :    at NuGet.Build.Tasks.Console.MSBuildStaticGraphRestore.RestoreAsync(String entryProjectFilePath, IDictionary`2 globalProperties, IReadOnlyDictionary`2 options) [/Users/runner/work/1/s/Build.proj]

Known Issue Error Message

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

{
  "ErrorMessage": ["Object reference not set to an instance of an object.", "at NuGet.NoAllocEnumerateExtensions.OptimisticallyNonAllocatingEnumerable"],
  "BuildRetry": false,
  "ExcludeConsoleLog": false
}

Known issue validation

Build: 🔎 https://dev.azure.com/dnceng/internal/_build/results?buildId=2529303
Error message validated: [Object reference not set to an instance of an object. at NuGet.NoAllocEnumerateExtensions.OptimisticallyNonAllocatingEnumerable]
Result validation: ✅ Known issue matched with the provided build.
Validation performed at: 9/5/2024 7:00:06 PM UTC

Report

Summary

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

[dotnet-policy-service]

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[steveharter]

@akoeplinger did you investigate a potential JIT issue around NuGet restore?

[akoeplinger]

no my issue turned out to be a race condition: NuGet/NuGet.Client#5905

[jeffschwMSFT]

removing blocking-clean-ci as it has not failed in 30 days

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

[akoeplinger]

let's close this since it hasn't happened again, there's nothing actionable here.