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[CI Postmortem] Dotnet tests stage execution failures across multiple PRs #25218

@rolfbjarne

Description

@rolfbjarne

Summary

The 'Dotnet tests' stage (cross-platform .NET tests) is failing with exit code 1 across 7 different PRs (28 builds, 115 failure instances). This is the highest-volume failure pattern in the last week.

Classification

  • Category: Test Failure
  • Impact: 7 PRs, 28 builds, 115 failure instances
  • Period: Last 7 days

Affected PRs

#25077, #25079, #25105, #25195, #25197, #25203, #25204

Affected platforms

dotnettests_ios, dotnettests_maccatalyst, dotnettests_macos, dotnettests_tvos, dotnettests_multiple

Pattern

The Dotnet tests stage consistently fails with exit code 1 across all platforms and multiple unrelated PRs. The sheer volume (115 instances) and breadth (7 PRs, all platforms) strongly suggests this is a systemic issue, not caused by individual PR changes.


Filed automatically by CI postmortem analysis.

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    ci-postmortemCI post-mortem analysis: flaky tests, infrastructure failures, shared regressions

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