[ci-scan] Test failure: X509Certificate2CollectionRemoveRangeArray under crossgen2 R2R

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Build Information

Build: https://dev.azure.com/dnceng-public/public/_build/results?buildId=1431066
Build error leg or test failing: linux-x64 Release TestReadyToRun_Libraries - System.Security.Cryptography.Tests

Error Details

CollectionTests.X509Certificate2CollectionRemoveRangeArray fails under R2R/crossgen2 on all three platforms (linux-x64, osx-x64, windows-x64). The test calls RemoveRange on an X509Certificate2Collection and expects 2 certificates to remain, but finds 0. This suggests a R2R compilation issue affecting the collection mutation logic.

A prior KBE (#128444) was filed and closed as not_planned on 2026-05-21, but the failure persists in today's build.

Affected legs:

• runtime-coreclr crossgen2 (def 124): linux-x64 Release TestReadyToRun_Libraries
• runtime-coreclr crossgen2 (def 124): windows-x64 Release TestReadyToRun_Libraries
• runtime-coreclr crossgen2 (def 124): osx-x64 Release TestReadyToRun_Libraries

First build it occurred: 1426059 (2026-05-19). Persistent across the entire scanned window; prior build 1424233 on 2026-05-18 succeeded.

Occurrences in window: 4+ consecutive builds (1426059, 1427388, 1429604, 1431066).

[FAIL] System.Security.Cryptography.X509Certificates.Tests.CollectionTests.X509Certificate2CollectionRemoveRangeArray
Assert.Equal() Failure: Values differ
Expected: 2
Actual:   0
   at System.Security.Cryptography.X509Certificates.Tests.CollectionTests.X509Certificate2CollectionRemoveRangeArray() in /_/src/libraries/System.Security.Cryptography/tests/X509Certificates/CollectionTests.cs:line 1037
   at System.RuntimeMethodHandle.InvokeMethod(ObjectHandleOnStack target, Void** arguments, ObjectHandleOnStack sig, BOOL isConstructor, ObjectHandleOnStack result)
   at System.Reflection.MethodBaseInvoker.InterpretedInvoke_Method(Object obj, IntPtr* args)

Error Message

{
  "ErrorMessage": ["X509Certificate2CollectionRemoveRangeArray", "Assert.Equal() Failure: Values differ"],
  "ErrorPattern": "",
  "BuildRetry": false,
  "ExcludeConsoleLog": false
}

Note

🔒 Integrity filter blocked 1 item

The following item was blocked because it doesn't meet the GitHub integrity level.

• #128392 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 · ● 36.3M · ◷

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Summary

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

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