[ci-scan] Build break: IL2007 Could not resolve assembly System.Runtime.Loader.Test.Assembly on Apple mobile

[github-actions]

Build Information

Build: https://dev.azure.com/dnceng-public/public/_build/results?buildId=1418286
Build error leg or test failing: iossimulator-x64 Release AllSubsets_CoreCLR - System.Runtime.Loader.Tests

Error Details

ILLink trimmer fails during library test build for Apple mobile platforms (iossimulator-x64, iossimulator-arm64, maccatalyst-x64, maccatalyst-arm64) because test assemblies are not available when the trimmer runs.

error IL2007: Could not resolve assembly 'System.Runtime.Loader.Test.Assembly'.
error IL2007: Could not resolve assembly 'System.Runtime.Loader.Test.Assembly2'.
error NETSDK1144: Optimizing assemblies for size failed.

Affects all 4 CoreCLR legs on runtime-extra-platforms (definition 154). The pipeline has been failing consistently since at least 2026-04-30 (15+ consecutive failures).

Tracking: #127645

Error Message

{
  "ErrorMessage": "error IL2007: Could not resolve assembly 'System.Runtime.Loader.Test.Assembly'",
  "BuildRetry": false,
  "ErrorPattern": "",
  "ExcludeConsoleLog": false
}

Generated by CI Outer-Loop Failure Scanner · ● 15.3M · ◷

Report

Build	Definition	Step Name	Console log	Pull Request
1420988	dotnet/runtime	Build product	Log	#128188
1420484	dotnet/runtime	Build product	Log	#128068
1420480	dotnet/runtime	Build product	Log	#128188
1420376	dotnet/runtime	Build product	Log	#125437
1420047	dotnet/runtime	Build product	Log

Summary

24-Hour Hit Count	7-Day Hit Count	1-Month Count
3	5	5

Known issue validation

Build: 🔎 https://dev.azure.com/dnceng-public/public/_build/results?buildId=1418286
Error message validated: [error IL2007: Could not resolve assembly 'System.Runtime.Loader.Test.Assembly']
Result validation: ✅ Known issue matched with the provided build.
Validation performed at: 5/15/2026 11:22:22 AM UTC

Report

Build	Definition	Step Name	Console log	Pull Request
1424079	dotnet/runtime	Build product	Log
1423593	dotnet/runtime	Build product	Log
1423053	dotnet/runtime	Build product	Log
1422120	dotnet/runtime	Build product	Log	#127498
1421640	dotnet/runtime	Build product	Log
1422048	dotnet/runtime	Build product	Log	#128068
1420988	dotnet/runtime	Build product	Log	#128188
1420484	dotnet/runtime	Build product	Log	#128068
1420480	dotnet/runtime	Build product	Log	#128188
1420376	dotnet/runtime	Build product	Log	#125437
1420047	dotnet/runtime	Build product	Log
1418286	dotnet/runtime	Build product	Log

Summary

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

Known issue validation

Build: 🔎 https://dev.azure.com/dnceng-public/public/_build/results?buildId=1418286
Error message validated: [error IL2007: Could not resolve assembly 'System.Runtime.Loader.Test.Assembly']
Result validation: ✅ Known issue matched with the provided build.
Validation performed at: 5/15/2026 11:22:22 AM UTC

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