Console log: 'System.Net.NameResolution.Functional.Tests' from job eee8b308-e14c-4c03-be18-3446c86ef58b workitem 316f95cf-2494-4f8d-995a-c1e53cb75aa7 (windows.server2025.amd64.open.rt) executed on machine a00FHA0 running Windows-2025Server-10.0.26100-SP0 C:\h\w\B5EA09AC\w\A9FF0988\e>set _NT_SYMBOL_PATH=C:\h\w\B5EA09AC\p;C:\h\w\B5EA09AC\p\PDB;C:\h\w\B5EA09AC\p\shared\Microsoft.NETCore.App\11.0.0 C:\h\w\B5EA09AC\w\A9FF0988\e>C:\h\w\B5EA09AC\p\dotnet C:\h\w\B5EA09AC\p\sos\tools\net6.0\any\dotnet-sos.dll install --architecture x86 Installing SOS to C:\Users\runner\.dotnet\sos Installing over existing installation... Creating installation directory... Copying files from C:\h\w\B5EA09AC\p\sos\tools\net6.0\any\win-x86 Copying files from C:\h\w\B5EA09AC\p\sos\tools\net6.0\any\lib Execute '.load C:\Users\runner\.dotnet\sos\sos.dll' to load SOS in your Windows debugger. Cleaning up... SOS install succeeded C:\h\w\B5EA09AC\w\A9FF0988\e>taskkill.exe /f /im corerun.exe ERROR: The process "corerun.exe" not found. C:\h\w\B5EA09AC\w\A9FF0988\e>set __TestArchitecture=x86 C:\h\w\B5EA09AC\w\A9FF0988\e>call RunTests.cmd --runtime-path C:\h\w\B5EA09AC\p ========================= Begin custom configuration settings ============================== set __IsXUnitLogCheckerSupported=1 set XUNIT_HIDE_PASSING_OUTPUT_DIAGNOSTICS=1 ========================== End custom configuration settings =============================== ----- start Tue 07/21/2026 11:53:00.50 =============== To repro directly: ===================================================== pushd C:\h\w\B5EA09AC\w\A9FF0988\e\ "C:\h\w\B5EA09AC\p\dotnet.exe" exec --runtimeconfig System.Net.NameResolution.Functional.Tests.runtimeconfig.json --depsfile System.Net.NameResolution.Functional.Tests.deps.json xunit.console.dll System.Net.NameResolution.Functional.Tests.dll -xml testResults.xml -nologo -nocolor -trait category=OuterLoop -notrait category=IgnoreForCI -notrait category=failing popd =========================================================================================================== C:\h\w\B5EA09AC\w\A9FF0988\e>"C:\h\w\B5EA09AC\p\dotnet.exe" exec --runtimeconfig System.Net.NameResolution.Functional.Tests.runtimeconfig.json --depsfile System.Net.NameResolution.Functional.Tests.deps.json xunit.console.dll System.Net.NameResolution.Functional.Tests.dll -xml testResults.xml -nologo -nocolor -trait category=OuterLoop -notrait category=IgnoreForCI -notrait category=failing Discovering: System.Net.NameResolution.Functional.Tests (method display = ClassAndMethod, method display options = None) Discovered: System.Net.NameResolution.Functional.Tests (found 19 of 135 test cases) Starting: System.Net.NameResolution.Functional.Tests (parallel test collections = on [2 threads], stop on fail = off) System.Net.NameResolution.Tests.DnsResolverTest.ResolveAddresses_NonExistent_ReturnsNxDomain(async: True) [FAIL] Assert.Equal() Failure: Values differ Expected: NxDomain Actual: ServerFailure Stack Trace: /_/src/libraries/System.Net.NameResolution/tests/FunctionalTests/DnsResolverTest.cs(232,0): at System.Net.NameResolution.Tests.DnsResolverTest.ResolveAddresses_NonExistent_ReturnsNxDomain(Boolean async) --- End of stack trace from previous location --- Finished: System.Net.NameResolution.Functional.Tests === TEST EXECUTION SUMMARY === System.Net.NameResolution.Functional.Tests Total: 36, Errors: 0, Failed: 1, Skipped: 0, Time: 1.072s ----- end Tue 07/21/2026 11:53:02.39 ----- exit code 1 ---------------------------------------------------------- C:\h\scripts\helix-scripts\azure\__init__.py:5: UserWarning: pkg_resources is deprecated as an API. See https://setuptools.pypa.io/en/latest/pkg_resources.html. The pkg_resources package is slated for removal as early as 2025-11-30. Refrain from using this package or pin to Setuptools<81. import pkg_resources 2026-07-21T11:53:03.067Z INFO run.py managed_identity(151) __init__ ManagedIdentityCredential will use IMDS with client_id: 3423231b-6b9e-4177-8817-76276b647404 2026-07-21T11:53:03.067Z INFO run.py azure_utils(32) get_credential_and_access_token VMSSManagedIdentity VmssMIClientIdForUpload Auth type will be used 2026-07-21T11:53:03.068Z INFO run.py _universal(535) on_request Request URL: 'http://169.254.169.254/metadata/identity/oauth2/token?api-version=2018-02-01&resource=REDACTED&client_id=REDACTED' Request method: 'GET' Request headers: 'Metadata': 'REDACTED' 'x-client-SKU': 'REDACTED' 'x-client-Ver': 'REDACTED' 'x-ms-client-request-id': 'a1c72be5-588f-4817-91fb-efb8ff910698' 'User-Agent': 'azsdk-python-identity/1.25.3 Python/3.13.13 (Windows-2025Server-10.0.26100-SP0)' No body was attached to the request 2026-07-21T11:53:03.088Z INFO run.py _universal(581) on_response Response status: 200 Response headers: 'Content-Type': 'application/json; charset=utf-8' 'Server': 'IMDS/150.870.65.2118' 'x-ms-request-id': 'a1c72be5-588f-4817-91fb-efb8ff910698' 'Date': 'Tue, 21 Jul 2026 11:53:03 GMT' 'Content-Length': '2557' 2026-07-21T11:53:03.089Z INFO run.py msal_managed_identity_client(165) _get_token_base ImdsCredential.get_token succeeded 2026-07-21T11:53:03.089Z INFO run.py decorators(24) wrapper ManagedIdentityCredential.get_token succeeded 2026-07-21T11:53:03.089Z INFO run.py azure_utils(64) get_credential_and_access_token Credentials are valid 2026-07-21T11:53:03.090Z INFO run.py msal_managed_identity_client(165) _get_token_base ImdsCredential.get_token_info succeeded 2026-07-21T11:53:03.091Z INFO run.py decorators(24) wrapper ManagedIdentityCredential.get_token_info succeeded 2026-07-21T11:53:03.558Z INFO run.py run(67) main Beginning reading of test results. 2026-07-21T11:53:03.559Z INFO run.py __init__(49) read_results Searching 'C:\h\w\B5EA09AC\w\A9FF0988\e' for test results files 2026-07-21T11:53:03.559Z INFO run.py __init__(55) read_results Found results file C:\h\w\B5EA09AC\w\A9FF0988\e\testResults.xml with format xunit 2026-07-21T11:53:03.561Z INFO run.py __init__(49) read_results Searching 'C:\h\w\B5EA09AC\w\A9FF0988\uploads' for test results files 2026-07-21T11:53:03.562Z INFO run.py packing_test_reporter(30) report_results Packing 36 test reports to 'C:\h\w\B5EA09AC\w\A9FF0988\e\__test_report.json' 2026-07-21T11:53:03.563Z INFO run.py packing_test_reporter(33) report_results Packed 12792 bytes 2026-07-21T11:53:03.563Z INFO run.py _helix_compat(255) report_results Writing 0 test results to 'C:\h\w\B5EA09AC\w\A9FF0988\e\__test_report_v2.json' (JSON v1) 2026-07-21T11:53:03.564Z INFO run.py _helix_compat(261) report_results Wrote 2373 bytes to 'C:\h\w\B5EA09AC\w\A9FF0988\e\__test_report_v2.json' ERROR: The process "corerun.exe" not found. gen-debug-dump-docs.py: Did not find dumps, skipping dump docs generation. ['System.Net.NameResolution.Functional.Tests' END OF WORK ITEM LOG: Command exited with 0]