Re-enable Microsoft.Extensions.Hosting FunctionalTests/TestApp shutdown coverage across local and Helix environments

[Copilot]

Description

Microsoft.Extensions.Hosting functional shutdown tests were effectively dead code: they were globally suppressed and pointed at an empty app path, so they never executed meaningful TestApp coverage.

This PR re-enables those tests, restores TestApp execution, and hardens Helix behavior for environments that differ from local developer machines.

• FunctionalTests/TestApp wiring

  • Replaced the disabled applicationPath = string.Empty path.
  • Set DeploymentParameters.ApplicationName to Microsoft.Extensions.Hosting.TestApp so deploy/run targets the correct assembly.
  • Updated app path handling to use AppContext.BaseDirectory instead of repository-root discovery.
  • Added an ApplicationPublisher override in the test to use existing deployed output on Helix instead of requiring Microsoft.Extensions.Hosting.TestApp.csproj in the workitem.

• Re-enable test execution

  • Removed IgnoreForCI from Microsoft.Extensions.Hosting.Functional.Tests.csproj.
  • Removed ActiveIssue assembly-level suppression from FunctionalTests/Properties/AssemblyInfo.cs.

• Helix robustness follow-up

  • Updated FunctionalTests ProcessExtensions.GetAllChildIdsUnix to gracefully handle Win32Exception when pgrep cannot be started (for example on minimal Helix environments).
  • Updated FunctionalTests ProcessExtensions.KillProcessUnix to use managed Process.GetProcessById(...).Kill() instead of shelling out to the external kill command.
  • When external process tools are unavailable, shutdown cleanup now remains best-effort and does not fail test disposal.

var deploymentParameters = new DeploymentParameters(
    applicationPath,
    RuntimeFlavor.CoreClr,
    RuntimeArchitecture.x64)
{
    ApplicationName = "Microsoft.Extensions.Hosting.TestApp",
    TargetFramework = $"net{version.Major}.{version.Minor}",
    ApplicationType = ApplicationType.Portable,
    PublishApplicationBeforeDeployment = true,
    PreservePublishedApplicationForDebugging = true,
    StatusMessagesEnabled = false
};

deploymentParameters.ApplicationPublisher = new ExistingOutputApplicationPublisher(applicationPath);

Testing

• Ran baseline build for libraries component: ./build.sh clr+libs -rc release
• Ran targeted functional test leg:
  • dotnet build /t:test ./tests/FunctionalTests/Microsoft.Extensions.Hosting.Functional.Tests.csproj
  • Result: 2 tests run, 0 failed

[rosebyte]

@copilot , the shutdown tests are failing with this error on helix machines:

Comments
{ "HelixJobId": "bf5b8a6f-0bdd-40b3-9fbc-f0eec7148f40", "HelixWorkItemName": "Microsoft.Extensions.Hosting.Functional.Tests" }

Error message
System.IO.DirectoryNotFoundException : Could not find Microsoft.Extensions.Hosting.TestApp.csproj from base directory '/root/helix/work/workitem/e/'.

Stack trace
at Microsoft.AspNetCore.Hosting.FunctionalTests.ShutdownTests.GetApplicationPath() in //src/libraries/Microsoft.Extensions.Hosting/tests/FunctionalTests/ShutdownTests.cs:line 173
at Microsoft.AspNetCore.Hosting.FunctionalTests.ShutdownTests.ExecuteShutdownTest(String testName, String shutdownMechanic) in //src/libraries/Microsoft.Extensions.Hosting/tests/FunctionalTests/ShutdownTests.cs:line 53
at Microsoft.AspNetCore.Hosting.FunctionalTests.ShutdownTests.ShutdownTestRun() in /_/src/libraries/Microsoft.Extensions.Hosting/tests/FunctionalTests/ShutdownTests.cs:line 35
--- End of stack trace from previous location ---

[Copilot]

@copilot , the shutdown tests are failing with this error on helix machines:

...

Fixed in b9cd702. I removed the source-tree lookup and switched the shutdown tests to run TestApp from the deployed test output (AppContext.BaseDirectory) using a custom ApplicationPublisher, so Helix no longer requires Microsoft.Extensions.Hosting.TestApp.csproj to exist in the workitem.

[rosebyte]

@copilot , this time it failed with this error:

Test Failures (700 tests failed)
🔹 [All failing tests from runtime]

⚠️ 698 failing tests not displayed for this pipeline due to space limitations

❌ Microsoft.AspNetCore.Hosting.FunctionalTests.ShutdownTests.ShutdownTestRun [Console] [Details] [Artifacts] [0.70% failure rate]
[ 🚧 Create issue against infrastructure team] [ 📄 Create issue in this repo]
Failing Configuration
AzureLinux.3.0.ArmArch.Open
Exception Message
System.ComponentModel.Win32Exception : An error occurred trying to start process 'pgrep' with working directory '/root/helix/work/workitem/e'. No such file or directory
CallStack
at Microsoft.Win32.SafeHandles.SafeProcessHandle.ForkAndExecProcess(ProcessStartInfo startInfo, String resolvedFilename, String[] argv, IDictionary2 env, String cwd, Boolean setCredentials, UInt32 userId, UInt32 groupId, UInt32[] groups, SafeFileHandle stdinHandle, SafeFileHandle stdoutHandle, SafeFileHandle stderrHandle, Boolean usesTerminal, SafeHandle[] inheritedHandles, Holder& waitStateHolder, Boolean throwOnNoExec) in /_/src/libraries/System.Diagnostics.Process/src/Microsoft/Win32/SafeHandles/SafeProcessHandle.Unix.cs:line 369 at Microsoft.Win32.SafeHandles.SafeProcessHandle.StartCore(ProcessStartInfo startInfo, SafeFileHandle stdinHandle, SafeFileHandle stdoutHandle, SafeFileHandle stderrHandle, SafeHandle[] inheritedHandles, Holder& waitStateHolder) in /_/src/libraries/System.Diagnostics.Process/src/Microsoft/Win32/SafeHandles/SafeProcessHandle.Unix.cs:line 213 at System.Diagnostics.Process.StartCore(ProcessStartInfo startInfo, SafeFileHandle stdinHandle, SafeFileHandle stdoutHandle, SafeFileHandle stderrHandle, SafeHandle[] inheritedHandles) in /_/src/libraries/System.Diagnostics.Process/src/System/Diagnostics/Process.Unix.cs:line 363 at System.Diagnostics.Process.Start() in /_/src/libraries/System.Diagnostics.Process/src/System/Diagnostics/Process.cs:line 1272 at System.Diagnostics.Process.Start(ProcessStartInfo startInfo) in /_/src/libraries/System.Diagnostics.Process/src/System/Diagnostics/Process.cs:line 1383 at Microsoft.Extensions.Internal.ProcessExtensions.RunProcessAndWaitForExit(String fileName, String arguments, TimeSpan timeout, String& stdout) in /_/src/libraries/Microsoft.Extensions.Hosting/tests/FunctionalTests/IntegrationTesting/src/ProcessExtensions.cs:line 93 at Microsoft.Extensions.Internal.ProcessExtensions.GetAllChildIdsUnix(Int32 parentId, ISet1 children, TimeSpan timeout) in //src/libraries/Microsoft.Extensions.Hosting/tests/FunctionalTests/IntegrationTesting/src/ProcessExtensions.cs:line 44
at Microsoft.Extensions.Internal.ProcessExtensions.KillTree(Process process, TimeSpan timeout) in //src/libraries/Microsoft.Extensions.Hosting/tests/FunctionalTests/IntegrationTesting/src/ProcessExtensions.cs:line 33
at Microsoft.Extensions.Internal.ProcessExtensions.KillTree(Process process) in //src/libraries/Microsoft.Extensions.Hosting/tests/FunctionalTests/IntegrationTesting/src/ProcessExtensions.cs:line 17
at Microsoft.Extensions.Hosting.IntegrationTesting.ApplicationDeployer.ShutDownIfAnyHostProcess(Process hostProcess) in //src/libraries/Microsoft.Extensions.Hosting/tests/FunctionalTests/IntegrationTesting/src/Deployers/ApplicationDeployer.cs:line 126
at Microsoft.Extensions.Hosting.IntegrationTesting.SelfHostDeployer.Dispose() in //src/libraries/Microsoft.Extensions.Hosting/tests/FunctionalTests/IntegrationTesting/src/Deployers/SelfHostDeployer.cs:line 179
at Microsoft.AspNetCore.Hosting.FunctionalTests.ShutdownTests.ExecuteShutdownTest(String testName, String shutdownMechanic) in //src/libraries/Microsoft.Extensions.Hosting/tests/FunctionalTests/ShutdownTests.cs:line 107
at Microsoft.AspNetCore.Hosting.FunctionalTests.ShutdownTests.ShutdownTestRun() in //src/libraries/Microsoft.Extensions.Hosting/tests/FunctionalTests/ShutdownTests.cs:line 34
--- End of stack trace from previous location ---
❌ Microsoft.AspNetCore.Hosting.FunctionalTests.ShutdownTests.ShutdownTestWaitForShutdown [Console] [Details] [Artifacts] [0.69% failure rate]
[ 🚧 Create issue against infrastructure team] [ 📄 Create issue in this repo]
Failing Configuration
AzureLinux.3.0.ArmArch.Open
Exception Message
System.ComponentModel.Win32Exception : An error occurred trying to start process 'pgrep' with working directory '/root/helix/work/workitem/e'. No such file or directory
CallStack
at Microsoft.Win32.SafeHandles.SafeProcessHandle.ForkAndExecProcess(ProcessStartInfo startInfo, String resolvedFilename, String[] argv, IDictionary2 env, String cwd, Boolean setCredentials, UInt32 userId, UInt32 groupId, UInt32[] groups, SafeFileHandle stdinHandle, SafeFileHandle stdoutHandle, SafeFileHandle stderrHandle, Boolean usesTerminal, SafeHandle[] inheritedHandles, Holder& waitStateHolder, Boolean throwOnNoExec) in /_/src/libraries/System.Diagnostics.Process/src/Microsoft/Win32/SafeHandles/SafeProcessHandle.Unix.cs:line 369 at Microsoft.Win32.SafeHandles.SafeProcessHandle.StartCore(ProcessStartInfo startInfo, SafeFileHandle stdinHandle, SafeFileHandle stdoutHandle, SafeFileHandle stderrHandle, SafeHandle[] inheritedHandles, Holder& waitStateHolder) in /_/src/libraries/System.Diagnostics.Process/src/Microsoft/Win32/SafeHandles/SafeProcessHandle.Unix.cs:line 213 at System.Diagnostics.Process.StartCore(ProcessStartInfo startInfo, SafeFileHandle stdinHandle, SafeFileHandle stdoutHandle, SafeFileHandle stderrHandle, SafeHandle[] inheritedHandles) in /_/src/libraries/System.Diagnostics.Process/src/System/Diagnostics/Process.Unix.cs:line 363 at System.Diagnostics.Process.Start() in /_/src/libraries/System.Diagnostics.Process/src/System/Diagnostics/Process.cs:line 1272 at System.Diagnostics.Process.Start(ProcessStartInfo startInfo) in /_/src/libraries/System.Diagnostics.Process/src/System/Diagnostics/Process.cs:line 1383 at Microsoft.Extensions.Internal.ProcessExtensions.RunProcessAndWaitForExit(String fileName, String arguments, TimeSpan timeout, String& stdout) in /_/src/libraries/Microsoft.Extensions.Hosting/tests/FunctionalTests/IntegrationTesting/src/ProcessExtensions.cs:line 93 at Microsoft.Extensions.Internal.ProcessExtensions.GetAllChildIdsUnix(Int32 parentId, ISet1 children, TimeSpan timeout) in //src/libraries/Microsoft.Extensions.Hosting/tests/FunctionalTests/IntegrationTesting/src/ProcessExtensions.cs:line 44
at Microsoft.Extensions.Internal.ProcessExtensions.KillTree(Process process, TimeSpan timeout) in //src/libraries/Microsoft.Extensions.Hosting/tests/FunctionalTests/IntegrationTesting/src/ProcessExtensions.cs:line 33
at Microsoft.Extensions.Internal.ProcessExtensions.KillTree(Process process) in //src/libraries/Microsoft.Extensions.Hosting/tests/FunctionalTests/IntegrationTesting/src/ProcessExtensions.cs:line 17
at Microsoft.Extensions.Hosting.IntegrationTesting.ApplicationDeployer.ShutDownIfAnyHostProcess(Process hostProcess) in //src/libraries/Microsoft.Extensions.Hosting/tests/FunctionalTests/IntegrationTesting/src/Deployers/ApplicationDeployer.cs:line 126
at Microsoft.Extensions.Hosting.IntegrationTesting.SelfHostDeployer.Dispose() in //src/libraries/Microsoft.Extensions.Hosting/tests/FunctionalTests/IntegrationTesting/src/Deployers/SelfHostDeployer.cs:line 179
at Microsoft.AspNetCore.Hosting.FunctionalTests.ShutdownTests.ExecuteShutdownTest(String testName, String shutdownMechanic) in //src/libraries/Microsoft.Extensions.Hosting/tests/FunctionalTests/ShutdownTests.cs:line 107
at Microsoft.AspNetCore.Hosting.FunctionalTests.ShutdownTests.ShutdownTestWaitForShutdown() in //src/libraries/Microsoft.Extensions.Hosting/tests/FunctionalTests/ShutdownTests.cs:line 41
--- End of stack trace from previous location ---

[Copilot]

@copilot , this time it failed with this error:

Test Failures (700 tests failed)
...

Fixed in 609f415. I updated Hosting FunctionalTests process cleanup to handle environments where pgrep isn’t available (or cannot be started) by gracefully skipping child-process discovery and still terminating the host process, which avoids this Helix failure path.

[rosebyte]

@copilot ,

now the error is this:

Test Failures (700 tests failed)
🔹 [All failing tests from runtime]

⚠️ 698 failing tests not displayed for this pipeline due to space limitations

❌ Microsoft.AspNetCore.Hosting.FunctionalTests.ShutdownTests.ShutdownTestRun [Console] [Details] [Artifacts] [0.79% failure rate]
[ 🚧 Create issue against infrastructure team] [ 📄 Create issue in this repo]
Failing Configuration
AzureLinux.3.0.ArmArch.Open
Exception Message
System.ComponentModel.Win32Exception : An error occurred trying to start process 'kill' with working directory '/root/helix/work/workitem/e'. No such file or directory
CallStack
at Microsoft.Win32.SafeHandles.SafeProcessHandle.ForkAndExecProcess(ProcessStartInfo startInfo, String resolvedFilename, String[] argv, IDictionary2 env, String cwd, Boolean setCredentials, UInt32 userId, UInt32 groupId, UInt32[] groups, SafeFileHandle stdinHandle, SafeFileHandle stdoutHandle, SafeFileHandle stderrHandle, Boolean usesTerminal, SafeHandle[] inheritedHandles, Holder& waitStateHolder, Boolean throwOnNoExec) in /_/src/libraries/System.Diagnostics.Process/src/Microsoft/Win32/SafeHandles/SafeProcessHandle.Unix.cs:line 369 at Microsoft.Win32.SafeHandles.SafeProcessHandle.StartCore(ProcessStartInfo startInfo, SafeFileHandle stdinHandle, SafeFileHandle stdoutHandle, SafeFileHandle stderrHandle, SafeHandle[] inheritedHandles, Holder& waitStateHolder) in /_/src/libraries/System.Diagnostics.Process/src/Microsoft/Win32/SafeHandles/SafeProcessHandle.Unix.cs:line 213 at System.Diagnostics.Process.StartCore(ProcessStartInfo startInfo, SafeFileHandle stdinHandle, SafeFileHandle stdoutHandle, SafeFileHandle stderrHandle, SafeHandle[] inheritedHandles) in /_/src/libraries/System.Diagnostics.Process/src/System/Diagnostics/Process.Unix.cs:line 363 at System.Diagnostics.Process.Start() in /_/src/libraries/System.Diagnostics.Process/src/System/Diagnostics/Process.cs:line 1272 at System.Diagnostics.Process.Start(ProcessStartInfo startInfo) in /_/src/libraries/System.Diagnostics.Process/src/System/Diagnostics/Process.cs:line 1383 at Microsoft.Extensions.Internal.ProcessExtensions.RunProcessAndWaitForExit(String fileName, String arguments, TimeSpan timeout, String& stdout) in /_/src/libraries/Microsoft.Extensions.Hosting/tests/FunctionalTests/IntegrationTesting/src/ProcessExtensions.cs:line 102 at Microsoft.Extensions.Internal.ProcessExtensions.KillProcessUnix(Int32 processId, TimeSpan timeout) in /_/src/libraries/Microsoft.Extensions.Hosting/tests/FunctionalTests/IntegrationTesting/src/ProcessExtensions.cs:line 84 at Microsoft.Extensions.Internal.ProcessExtensions.KillTree(Process process, TimeSpan timeout) in /_/src/libraries/Microsoft.Extensions.Hosting/tests/FunctionalTests/IntegrationTesting/src/ProcessExtensions.cs:line 39 at Microsoft.Extensions.Internal.ProcessExtensions.KillTree(Process process) in /_/src/libraries/Microsoft.Extensions.Hosting/tests/FunctionalTests/IntegrationTesting/src/ProcessExtensions.cs:line 18 at Microsoft.Extensions.Hosting.IntegrationTesting.ApplicationDeployer.ShutDownIfAnyHostProcess(Process hostProcess) in /_/src/libraries/Microsoft.Extensions.Hosting/tests/FunctionalTests/IntegrationTesting/src/Deployers/ApplicationDeployer.cs:line 126 at Microsoft.Extensions.Hosting.IntegrationTesting.SelfHostDeployer.Dispose() in /_/src/libraries/Microsoft.Extensions.Hosting/tests/FunctionalTests/IntegrationTesting/src/Deployers/SelfHostDeployer.cs:line 179 at Microsoft.AspNetCore.Hosting.FunctionalTests.ShutdownTests.ExecuteShutdownTest(String testName, String shutdownMechanic) in /_/src/libraries/Microsoft.Extensions.Hosting/tests/FunctionalTests/ShutdownTests.cs:line 107 at Microsoft.AspNetCore.Hosting.FunctionalTests.ShutdownTests.ShutdownTestRun() in /_/src/libraries/Microsoft.Extensions.Hosting/tests/FunctionalTests/ShutdownTests.cs:line 34 --- End of stack trace from previous location --- ❌ Microsoft.AspNetCore.Hosting.FunctionalTests.ShutdownTests.ShutdownTestWaitForShutdown [[Console]](https://helixr18s23ayyeko0k025g8.blob.core.windows.net/dotnet-runtime-refs-pull-128252-merge-b04d9195b761401cbb/Microsoft.Extensions.Hosting.Functional.Tests/1/console.91d5f3b3.log?helixlogtype=result) [[Details]](https://dev.azure.com/dnceng-public/public/_build/results?buildId=1426157&view=ms.vss-test-web.build-test-results-tab&runId=39633460&resultId=102599&paneView=debug) [[Artifacts]](https://dev.azure.com/dnceng-public/public/_build/results?buildId=1426157&view=ms.vss-test-web.build-test-results-tab&runId=39633460&resultId=102599&paneView=dotnet-dnceng.dnceng-build-release-tasks.helix-test-information-tab) [[0.79% failure rate]](https://dev.azure.com/dnceng-public/public/_build/results?buildId=1426157&view=ms.vss-test-web.build-test-results-tab&runId=39633460&resultId=102599&paneView=history) [[ 🚧 Create issue against infrastructure team]](https://helix.dot.net/ki/new?labels=Known%20Build%20Error%2CFirst%20Responder%2CDetected%20By%20-%20Customer&build=https%3A%2F%2Fdev.azure.com%2Fdnceng-public%2Fcbb18261-c48f-4abb-8651-8cdcb5474649%2F_build%2Fresults%3FbuildId%3D1426157&build-leg=Microsoft.AspNetCore.Hosting.FunctionalTests.ShutdownTests.ShutdownTestWaitForShutdown&template=z-build-break-infrastructure-issue-template.yml&pr=https%3A%2F%2Fgithub.com%2Fdotnet%2Fruntime%2Fpull%2F128252&repository=dotnet%2Fdnceng) [[ 📄 Create issue in this repo]](https://helix.dot.net/ki/new?labels=Known%20Build%20Error%2Cblocking-clean-ci&build=https%3A%2F%2Fdev.azure.com%2Fdnceng-public%2Fcbb18261-c48f-4abb-8651-8cdcb5474649%2F_build%2Fresults%3FbuildId%3D1426157&build-leg=Microsoft.AspNetCore.Hosting.FunctionalTests.ShutdownTests.ShutdownTestWaitForShutdown&pr=https%3A%2F%2Fgithub.com%2Fdotnet%2Fruntime%2Fpull%2F128252&repository=dotnet%2Fruntime) Failing Configuration [AzureLinux.3.0.ArmArch.Open](https://dev.azure.com/dnceng-public/cbb18261-c48f-4abb-8651-8cdcb5474649/_build/results?buildId=1426157&view=ms.vss-test-web.build-test-results-tab&runId=39633460&resultId=102599) Exception Message System.ComponentModel.Win32Exception : An error occurred trying to start process 'kill' with working directory '/root/helix/work/workitem/e'. No such file or directory CallStack at Microsoft.Win32.SafeHandles.SafeProcessHandle.ForkAndExecProcess(ProcessStartInfo startInfo, String resolvedFilename, String[] argv, IDictionary2 env, String cwd, Boolean setCredentials, UInt32 userId, UInt32 groupId, UInt32[] groups, SafeFileHandle stdinHandle, SafeFileHandle stdoutHandle, SafeFileHandle stderrHandle, Boolean usesTerminal, SafeHandle[] inheritedHandles, Holder& waitStateHolder, Boolean throwOnNoExec) in //src/libraries/System.Diagnostics.Process/src/Microsoft/Win32/SafeHandles/SafeProcessHandle.Unix.cs:line 369
at Microsoft.Win32.SafeHandles.SafeProcessHandle.StartCore(ProcessStartInfo startInfo, SafeFileHandle stdinHandle, SafeFileHandle stdoutHandle, SafeFileHandle stderrHandle, SafeHandle[] inheritedHandles, Holder& waitStateHolder) in //src/libraries/System.Diagnostics.Process/src/Microsoft/Win32/SafeHandles/SafeProcessHandle.Unix.cs:line 213
at System.Diagnostics.Process.StartCore(ProcessStartInfo startInfo, SafeFileHandle stdinHandle, SafeFileHandle stdoutHandle, SafeFileHandle stderrHandle, SafeHandle[] inheritedHandles) in //src/libraries/System.Diagnostics.Process/src/System/Diagnostics/Process.Unix.cs:line 363
at System.Diagnostics.Process.Start() in //src/libraries/System.Diagnostics.Process/src/System/Diagnostics/Process.cs:line 1272
at System.Diagnostics.Process.Start(ProcessStartInfo startInfo) in //src/libraries/System.Diagnostics.Process/src/System/Diagnostics/Process.cs:line 1383
at Microsoft.Extensions.Internal.ProcessExtensions.RunProcessAndWaitForExit(String fileName, String arguments, TimeSpan timeout, String& stdout) in //src/libraries/Microsoft.Extensions.Hosting/tests/FunctionalTests/IntegrationTesting/src/ProcessExtensions.cs:line 102
at Microsoft.Extensions.Internal.ProcessExtensions.KillProcessUnix(Int32 processId, TimeSpan timeout) in //src/libraries/Microsoft.Extensions.Hosting/tests/FunctionalTests/IntegrationTesting/src/ProcessExtensions.cs:line 84
at Microsoft.Extensions.Internal.ProcessExtensions.KillTree(Process process, TimeSpan timeout) in //src/libraries/Microsoft.Extensions.Hosting/tests/FunctionalTests/IntegrationTesting/src/ProcessExtensions.cs:line 39
at Microsoft.Extensions.Internal.ProcessExtensions.KillTree(Process process) in //src/libraries/Microsoft.Extensions.Hosting/tests/FunctionalTests/IntegrationTesting/src/ProcessExtensions.cs:line 18
at Microsoft.Extensions.Hosting.IntegrationTesting.ApplicationDeployer.ShutDownIfAnyHostProcess(Process hostProcess) in //src/libraries/Microsoft.Extensions.Hosting/tests/FunctionalTests/IntegrationTesting/src/Deployers/ApplicationDeployer.cs:line 126
at Microsoft.Extensions.Hosting.IntegrationTesting.SelfHostDeployer.Dispose() in //src/libraries/Microsoft.Extensions.Hosting/tests/FunctionalTests/IntegrationTesting/src/Deployers/SelfHostDeployer.cs:line 179
at Microsoft.AspNetCore.Hosting.FunctionalTests.ShutdownTests.ExecuteShutdownTest(String testName, String shutdownMechanic) in //src/libraries/Microsoft.Extensions.Hosting/tests/FunctionalTests/ShutdownTests.cs:line 107
at Microsoft.AspNetCore.Hosting.FunctionalTests.ShutdownTests.ShutdownTestWaitForShutdown() in /_/src/libraries/Microsoft.Extensions.Hosting/tests/FunctionalTests/ShutdownTests.cs:line 41
--- End of stack trace from previous location ---

[rosebyte]

@copilot fix it (the previous post with the error)

[Copilot]

@copilot ,

now the error is this:
...

Fixed in 3599810. I removed the Unix cleanup dependency on the external kill binary by switching KillProcessUnix to Process.GetProcessById(...).Kill() with guarded exception handling, so Helix environments without kill no longer fail during shutdown test disposal.

@copilot fix it (the previous post with the error)

Addressed in 3599810 with the same fix: process termination no longer shells out to kill, so this Helix failure path is removed.