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[ci-scan] Build break: crossgen2-comparison hash mismatch on windows x86 (recurrence) #129603

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[ci-scan] Build break: crossgen2-comparison hash mismatch on windows x86 (recurrence)#129603
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Known Build ErrorUse this to report build issues in the .NET Helix tabagentic-workflowsarea-ReadyToRunblocking-clean-ciBlocking PR or rolling runs of 'runtime' or 'runtime-extra-platforms'

Description

@github-actions
github-actions
bot
opened on Jun 19, 2026

Build Information

Build: https://dev.azure.com/dnceng-public/public/_build/results?buildId=1470127
Build error leg or test failing: Test crossgen2-comparison windows x86 Release to x86 windows - WorkItem

Error Details

crossgen2_comparison.py detects non-deterministic R2R image output when crossgen2 compiles assemblies twice targeting windows-x86. 4 of 236 compared assemblies produce different SHA-256 hashes between the baseline and re-compilation pass.

File hash sum mismatch for "System.Data.Odbc" assembly for files of type "NativeOrReadyToRunImage":
File hash sum mismatch for "System.IO.Compression" assembly for files of type "NativeOrReadyToRunImage":
File hash sum mismatch for "System.Private.CoreLib" assembly for files of type "NativeOrReadyToRunImage":
File hash sum mismatch for "System.Runtime.Numerics" assembly for files of type "NativeOrReadyToRunImage":
Number of mismatched results: 4

Affected pipelines:

  • runtime-coreclr crossgen2 outerloop (def 134): Test crossgen2-comparison windows x86 Release to x86 windows

Error Message

{
  "ErrorMessage": ["File hash sum mismatch for", "NativeOrReadyToRunImage"],
  "ErrorPattern": "",
  "BuildRetry": false,
  "ExcludeConsoleLog": false
}

First build it occurred

Predecessor / related issues

Duplicate search

Filed by ci-failure-scan (detection only). ci-failure-fix walks open [ci-scan] KBEs and either opens a small fix PR or comments here to loop in owners — it never disables the test.

Warning

Firewall blocked 1 domain

The following domain was blocked by the firewall during workflow execution:

  • dotnet.github.io

To allow these domains, add them to the network.allowed list in your workflow frontmatter:

network:
  allowed:
    - defaults
    - "dotnet.github.io"

See Network Configuration for more information.

Note

🔒 Integrity filter blocked 13 items

The following items were blocked because they don't meet the GitHub integrity level.

  • #92420 search_issues: has lower integrity than agent requires. The agent cannot read data with integrity below "approved".
  • #110173 search_issues: has lower integrity than agent requires. The agent cannot read data with integrity below "approved".
  • #83659 search_issues: has lower integrity than agent requires. The agent cannot read data with integrity below "approved".
  • #116060 search_issues: has lower integrity than agent requires. The agent cannot read data with integrity below "approved".
  • #105441 search_issues: has lower integrity than agent requires. The agent cannot read data with integrity below "approved".
  • #111922 search_issues: has lower integrity than agent requires. The agent cannot read data with integrity below "approved".
  • #106113 search_issues: has lower integrity than agent requires. The agent cannot read data with integrity below "approved".
  • #105443 search_issues: has lower integrity than agent requires. The agent cannot read data with integrity below "approved".
  • #94393 search_issues: has lower integrity than agent requires. The agent cannot read data with integrity below "approved".
  • #89545 search_issues: has lower integrity than agent requires. The agent cannot read data with integrity below "approved".
  • #92468 search_issues: has lower integrity than agent requires. The agent cannot read data with integrity below "approved".
  • #82637 search_issues: has lower integrity than agent requires. The agent cannot read data with integrity below "approved".
  • #84394 search_issues: has lower integrity than agent requires. The agent cannot read data with integrity below "approved".

To allow these resources, lower min-integrity in your GitHub frontmatter:

tools:
  github:
    min-integrity: approved  # merged | approved | unapproved | none

Generated by CI Outer-Loop Failure Scanner · ● 131.8M · ◷

Report

Build Repository Test Pull Request
1489529 dotnet/runtime CrossgenCompile_System.IO.Compression_Target_windows_x86_windows_x64_vs_windows_x86 #130067
1489159 dotnet/runtime CrossgenCompile_System.Private.CoreLib_Target_windows_x86_windows_x64_vs_windows_x86
1488318 dotnet/runtime CrossgenCompile_System.Runtime.Numerics_Target_windows_x86_windows_x64_vs_windows_x86
1487086 dotnet/runtime CrossgenCompile_System.Runtime.Numerics_Target_windows_x86_windows_x64_vs_windows_x86
1486582 dotnet/runtime CrossgenCompile_System.Data.Odbc_Target_windows_x86_windows_x64_vs_windows_x86 #129605
1485196 dotnet/runtime CrossgenCompile_System.Data.Odbc_Target_windows_x86_windows_x64_vs_windows_x86
1484674 dotnet/runtime CrossgenCompile_System.Runtime.Numerics_Target_windows_x86_windows_x64_vs_windows_x86
1484124 dotnet/runtime CrossgenCompile_System.Data.Odbc_Target_windows_x86_windows_x64_vs_windows_x86
1482463 dotnet/runtime CrossgenCompile_System.Runtime.Numerics_Target_windows_x86_windows_x64_vs_windows_x86
1480623 dotnet/runtime CrossgenCompile_System.Runtime.Numerics_Target_windows_x86_windows_x64_vs_windows_x86
1479756 dotnet/runtime CrossgenCompile_System.Private.CoreLib_Target_windows_x86_windows_x64_vs_windows_x86 #129605
1478673 dotnet/runtime CrossgenCompile_System.Runtime.Numerics_Target_windows_x86_windows_x64_vs_windows_x86
1476635 dotnet/runtime CrossgenCompile_System.Data.Odbc_Target_windows_x86_windows_x64_vs_windows_x86
1473755 dotnet/runtime CrossgenCompile_System.Runtime.Numerics_Target_windows_x86_windows_x64_vs_windows_x86 #129285
1474866 dotnet/runtime CrossgenCompile_System.Runtime.Numerics_Target_windows_x86_windows_x64_vs_windows_x86
1474193 dotnet/runtime CrossgenCompile_System.Runtime.Numerics_Target_windows_x86_windows_x64_vs_windows_x86
1473655 dotnet/runtime CrossgenCompile_System.Data.Odbc_Target_windows_x86_windows_x64_vs_windows_x86
1472229 dotnet/runtime CrossgenCompile_System.IO.Compression_Target_windows_x86_windows_x64_vs_windows_x86 #129285
1471956 dotnet/runtime CrossgenCompile_System.Data.Odbc_Target_windows_x86_windows_x64_vs_windows_x86

Summary

24-Hour Hit Count 7-Day Hit Count 1-Month Count
0 9 19

Activity

  1. github-actions
    added
    blocking-clean-ciBlocking PR or rolling runs of 'runtime' or 'runtime-extra-platforms'
    Known Build ErrorUse this to report build issues in the .NET Helix tab
    agentic-workflows
    on Jun 19, 2026
  2. dotnet-policy-service
    added
    untriagedNew issue has not been triaged by the area owner
    on Jun 19, 2026
  3. jeffschwMSFT
    added
    area-ReadyToRun
    on Jun 22, 2026

  4. JulieLeeMSFT commented on Jun 23, 2026

    @JulieLeeMSFT
    JulieLeeMSFT
    on Jun 23, 2026
    Member

    Failed in runtime-coreclr crossgen2 outerloop / 20260622.1

    • Windows.10.Amd64.Open
      • CrossgenCompile_System.Data.Odbc_Target_windows_x86_windows_x64_vs_windows_x86
      • CrossgenCompile_System.IO.Compression_Target_windows_x86_windows_x64_vs_windows_x86
      • CrossgenCompile_System.Private.CoreLib_Target_windows_x86_windows_x64_vs_windows_x86
      • CrossgenCompile_System.Runtime.Numerics_Target_windows_x86_windows_x64_vs_windows_x86

    CC @jtschuster

  5. jtschuster commented on Jun 30, 2026

    @jtschuster
    jtschuster
    on Jun 30, 2026
    Member

    Copilot findings: #130040

  6. jtschuster
    removed
    untriagedNew issue has not been triaged by the area owner
    on Jun 30, 2026

  7. jtschuster commented on Jul 2, 2026

    @jtschuster
    jtschuster
    on Jul 2, 2026
    Member

    Fixed by #130059. https://dev.azure.com/dnceng-public/public/_build/results?buildId=1491123&view=results passes

  8. jtschuster
    closed this as completedon Jul 2, 2026
  9. github-actions
    locked and limited conversation to collaborators on Aug 2, 2026
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