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

[github-actions]

Build Information

Build: https://dev.azure.com/dnceng-public/public/_build/results?buildId=1441895
Build error leg or test failing: linux-x64 Release TestReadyToRun_Libraries - System.Security.Cryptography.Tests

Error Details

CollectionTests.X509Certificate2CollectionRemoveRangeArray fails under R2R/crossgen2 on linux-x64, osx-x64, and windows-x64. The test calls RemoveRange on an X509Certificate2Collection and expects 2 certificates to remain, but finds 0. Prior KBE #128538 was closed on 2026-05-28 but the failure persists.

[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

Error Message

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

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

• Build: https://dev.azure.com/dnceng-public/public/_build/results?buildId=1426059
• Finished: 2026-05-19
• Occurrences in window: 12+ consecutive builds (1426059 through 1442401)
• Persistent across the entire scanned window; true origin may predate 2026-05-19.

---

Filed by ci-failure-scan, which scans dnceng-public outer-loop pipelines on main and converts stable failures into KBEs and test-disable PRs.

Note

🔒 Integrity filter blocked 2 items

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

• #128392 search_issues: has lower integrity than agent requires. The agent cannot read data with integrity below "approved".
• #86273 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 · ● 68.2M · ◷

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Summary

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

[vcsjones]

Like 5 issues for this have been created.