[Flaky Test] Microsoft.Build.Coordinator.UnitTests.CoordinatorIntegration_Tests.SingleBuild_CoordinatorCapsMaxNodeCount

[github-actions]

Flaky-test key (automated de-duplication — do not edit):

flaky-test-id: Microsoft.Build.Coordinator.UnitTests.CoordinatorIntegration_Tests.SingleBuild_CoordinatorCapsMaxNodeCount

Evidence

This test was flagged as flaky by the automated flaky-test detector across 3 distinct approved PRs with 3 different error signatures, on multiple platforms.

Field	Value
Assembly	MSBuild.Coordinator.UnitTests
Fully-qualified name	Microsoft.Build.Coordinator.UnitTests.CoordinatorIntegration_Tests.SingleBuild_CoordinatorCapsMaxNodeCount
Distinct sources	3 (all PRs: #13609, #14240, #14470)
Distinct error hashes	3 (4039adb7, 55b6331b, ba217936)
Affected legs	CoreOnLinux, CoreOnWindows, FullOnWindows Release
Affected TFMs	net10.0, net11.0, net472
First seen	2026-07-17
Last seen	2026-07-23
Sample build	1523327

Sample error

Shouldly.ShouldAssertException : buildOutput
    should contain (case insensitive comparison)
"MaxNodeCount=2"
    but was actually
"MSBuild version 18.10.0-ci.26373.1+0be7e952e for .NET Framework
Build started 7/23/2026 1:04:10 PM...."

Next steps

The test will be quarantined in a future run via [ActiveIssue("<issue url>")] (from Microsoft.DotNet.XUnitV3Extensions, namespace Xunit) once this issue is open with a real number. This stamps the Category=failing trait, which normal CI excludes and the quarantine pipeline (def 344) picks up to keep collecting signal. The underlying nondeterminism fix will be handled by the auto-fixer workflow or a human.

Warning

Firewall blocked 1 domain

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

• awmgmcpg

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

network:
  allowed:
    - defaults
    - "awmgmcpg"

See Network Configuration for more information.

Generated by Flaky Test Triage · 190.7 AIC · ⌖ 7.39 AIC · ⊞ 14.8K · ◷

[github-actions]

Automated flaky-test triage (2026-07-27): this test has been quarantined with [ActiveIssue("https://github.com/dotnet/msbuild/issues/14516")] in src/MSBuild.Coordinator.UnitTests/CoordinatorIntegration_Tests.cs.

Evidence at time of quarantine:

• Distinct sources: 3 (3 PRs: Add event-level task telemetry (build/tasks/details) #13609, Harden coordinator client lifecycle races #14240, Rewrite branch freeze automation in PowerShell #14470)
• Legs: CoreOnLinux, CoreOnWindows, FullOnWindows Release
• TFMs: net10.0, net11.0, net472
• First seen: 2026-07-17 | Last seen: 2026-07-23
• Error hashes: 3 distinct (4039adb7, 55b6331b, ba217936)
• Sample build

This PR will be linked shortly.

Warning

Firewall blocked 2 domains

The following domains were blocked by the firewall during workflow execution:

• awmgmcpg
• southcentralus0.in.applicationinsights.azure.com

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

network:
  allowed:
    - defaults
    - "awmgmcpg"
    - "southcentralus0.in.applicationinsights.azure.com"

See Network Configuration for more information.

Generated by Flaky Test Triage · sonnet46 · 153.8 AIC · ⌖ 6.72 AIC · ⊞ 14.7K · ◷