AppHost tests fail with "Failure extracting contents of the application bundle."

[jkotas]

Build Information

Build: https://dev.azure.com/dnceng-public/cbb18261-c48f-4abb-8651-8cdcb5474649/_build/results?buildId=1135932
Build error leg or test failing: AppHost.Bundle.Tests.BundledAppWithSubDirs.AppHost.Bundle.Tests.BundledAppWithSubDirs.FrameworkDependent
Pull request: #119235

Error Message

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

{
  "ErrorMessage": "Failure extracting contents of the application bundle.",
  "ErrorPattern": "",
  "BuildRetry": false,
  "ExcludeConsoleLog": false
}

Known issue validation

Build: 🔎 https://dev.azure.com/dnceng-public/public/_build/results?buildId=1135932
Error message validated: [Failure extracting contents of the application bundle.]
Result validation: ✅ Known issue matched with the provided build.
Validation performed at: 9/1/2025 2:51:56 PM UTC

Report

Build	Definition	Test	Pull Request
1150124	dotnet/runtime	AppHost.Bundle.Tests.WorkItemExecution	#119684
1149766	dotnet/runtime	AppHost.Bundle.Tests.WorkItemExecution	#119768
1148752	dotnet/runtime	AppHost.Bundle.Tests.WorkItemExecution	#119469
1148765	dotnet/runtime	AppHost.Bundle.Tests.WorkItemExecution
1148740	dotnet/runtime	AppHost.Bundle.Tests.WorkItemExecution	#118831
1148666	dotnet/runtime	AppHost.Bundle.Tests.WorkItemExecution	#119728
1148497	dotnet/runtime	AppHost.Bundle.Tests.WorkItemExecution	#119429
1146323	dotnet/runtime	AppHost.Bundle.Tests.WorkItemExecution	#119540
1144737	dotnet/runtime	AppHost.Bundle.Tests.WorkItemExecution	#119552
1138148	dotnet/runtime	AppHost.Bundle.Tests.WorkItemExecution	#117583
1136629	dotnet/runtime	AppHost.Bundle.Tests.WorkItemExecution	#118122
1135932	dotnet/runtime	AppHost.Bundle.Tests.WorkItemExecution	#119235

Summary

24-Hour Hit Count	7-Day Hit Count	1-Month Count
2	9	12

[dotnet-policy-service]

Tagging subscribers to this area: @vitek-karas, @agocke, @VSadov
See info in area-owners.md if you want to be subscribed.

[jkotas]

Log fragment:

[xUnit.net 00:00:05.71]       Mapped application bundle
[xUnit.net 00:00:05.71]       Files embedded within the bundle will be extracted to [/home/helixbot/.net/AppWithSubDirs/SNQqguvtg_SF] directory.
[xUnit.net 00:00:05.71]       Starting new extraction of application bundle.
[xUnit.net 00:00:05.71]       Temporary directory used to extract bundled files is [/home/helixbot/.net/AppWithSubDirs/15414].
[xUnit.net 00:00:05.71]       Failure extracting contents of the application bundle. Expected size:2865152 Actual size:1183744
[xUnit.net 00:00:05.71]       I/O failure when writing extracted files.
[xUnit.net 00:00:05.71]       ' could not be formatted with string.Format
[xUnit.net 00:00:05.71]          at System.Text.ValueStringBuilder.AppendFormatHelper(IFormatProvider provider, String format, ReadOnlySpan`1 args)
[xUnit.net 00:00:05.71]          at System.String.FormatHelper(IFormatProvider provider, String format, ReadOnlySpan`1 args)
[xUnit.net 00:00:05.71]          at FluentAssertions.Execution.FailureMessageFormatter.FormatArgumentPlaceholders(String failureMessage, Object[] failureArgs)
[xUnit.net 00:00:05.71]       Stack Trace:
[xUnit.net 00:00:05.71]            at FluentAssertions.Execution.LateBoundTestFramework.Throw(String message)
[xUnit.net 00:00:05.71]            at FluentAssertions.Execution.DefaultAssertionStrategy.HandleFailure(String message)
[xUnit.net 00:00:05.71]            at FluentAssertions.Execution.AssertionScope.AddPreFormattedFailure(String formattedFailureMessage)
[xUnit.net 00:00:05.71]            at FluentAssertions.Execution.AssertionChain.FailWith(Func`1 getFailureReason)
[xUnit.net 00:00:05.71]            at FluentAssertions.Execution.AssertionChain.FailWith(Func`1 getFailureReason)
[xUnit.net 00:00:05.71]            at FluentAssertions.Execution.AssertionChain.FailWith(String message)
[xUnit.net 00:00:05.71]         /_/src/installer/tests/TestUtils/Assertions/CommandResultAssertions.cs(37,0): at Microsoft.DotNet.CoreSetup.Test.CommandResultAssertions.Pass()
[xUnit.net 00:00:05.71]         /_/src/installer/tests/AppHost.Bundle.Tests/BundledAppWithSubDirs.cs(35,0): at AppHost.Bundle.Tests.BundledAppWithSubDirs.RunTheApp(String path, Boolean selfContained, Boolean deleteExtracted)

[agocke]

cc @elinor-fung @jtschuster

[jtschuster]

Errors in the following tests indicate the machine is out of space:

Failed to create directory [/home/helixbot/.net/AppWithSubDirs/1c1cf] for extracting bundled files. Error code: 28

[elinor-fung]

I believe we do properly clean everything up, but perhaps we could do so more eagerly. For a number of test classes, we have a shared app where each test case bundles it differently. Only after all the test cases in that class have run do all those bundles get cleaned up (when the shared app is cleaned up).