baseservices failing for coreclr runtime-extra-platforms testing with "Process mlaunch exited with 1"

[jakobbotsch]

Example pipeline run: https://dev.azure.com/dnceng-public/public/_build/results?buildId=1295625&view=results
Example console log: https://helixr1107v0xdeko0k025g8.blob.core.windows.net/dotnet-runtime-refs-heads-main-bcc6da633d0b472aaa/baseservices/1/console.4a163b50.log

[22:55:36] dbug: Running /private/tmp/helix/working/BFF00A1A/p/microsoft.dotnet.xharness.cli/11.0.0-prerelease.26064.3/tools/net8.0/any/../../../runtimes/any/native/mlaunch/bin/mlaunch 
                 With env vars: 
                     DOTNET_CI = 'true'
[22:55:38] dbug: Process mlaunch exited with 1
[22:55:38] dbug: Test run failed

Build Information

Build: https://dev.azure.com/dnceng-public/public/_build/results?buildId=1295625
Build error leg or test failing: baseservices-exceptions.WorkItemExecution
Pull request: #124373

Error Message

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

{
  "ErrorMessage": ["baseservices", "Process mlaunch exited with 1"],
  "ErrorPattern": "",
  "BuildRetry": false,
  "ExcludeConsoleLog": false
}

Known issue validation

Build: 🔎 https://dev.azure.com/dnceng-public/public/_build/results?buildId=1295625
Error message validated: [baseservices.r2r.dylib Process mlaunch exited with 1]
Result validation: ✅ Known issue matched with the provided build.
Validation performed at: 2/16/2026 11:49:14 AM UTC

Known issue validation

Build: 🔎 https://dev.azure.com/dnceng-public/public/_build/results?buildId=1295625
Error message validated: [baseservices Process mlaunch exited with 1]
Result validation: ✅ Known issue matched with the provided build.
Validation performed at: 2/16/2026 11:54:46 AM UTC

Report

Build	Repository	Test	Pull Request
1448602	dotnet/runtime	baseservices-exceptions.WorkItemExecution
1444966	dotnet/runtime	baseservices-exceptions.WorkItemExecution
1443952	dotnet/runtime	baseservices_varargs.WorkItemExecution
1443540	dotnet/runtime	baseservices-exceptions.WorkItemExecution
1442703	dotnet/runtime	baseservices-exceptions.WorkItemExecution
1437574	dotnet/runtime	baseservices-exceptions.WorkItemExecution
1431552	dotnet/runtime	baseservices.WorkItemExecution	#128408
1429871	dotnet/runtime	baseservices.WorkItemExecution	#125437
1429323	dotnet/runtime	baseservices.WorkItemExecution
1428393	dotnet/runtime	baseservices-exceptions.WorkItemExecution	#128409
1428980	dotnet/runtime	baseservices_TieredCompilation.WorkItemExecution
1428144	dotnet/runtime	baseservices.WorkItemExecution	#125437
1427236	dotnet/runtime	baseservices-exceptions.WorkItemExecution
1427030	dotnet/runtime	baseservices.WorkItemExecution	#125437
1426173	dotnet/runtime	baseservices-exceptions.WorkItemExecution	#128284
1425947	dotnet/runtime	baseservices.WorkItemExecution
1424920	dotnet/runtime	baseservices-exceptions.WorkItemExecution	#128068
1422120	dotnet/runtime	baseservices-exceptions.WorkItemExecution	#127498
1418874	dotnet/runtime	baseservices-exceptions.WorkItemExecution
1418805	dotnet/runtime	baseservices.WorkItemExecution	#124173
1418721	dotnet/runtime	baseservices_TieredCompilation.WorkItemExecution
1418441	dotnet/runtime	baseservices_varargs.WorkItemExecution
1418184	dotnet/runtime	baseservices_TieredCompilation.WorkItemExecution

Summary

24-Hour Hit Count	7-Day Hit Count	1-Month Count
0	2	23

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Tagging subscribers to this area: @dotnet/runtime-infrastructure
See info in area-owners.md if you want to be subscribed.