[Flaky Test] Quarantine 3 flaky tests

[github-actions]

Quarantines 3 flaky tests detected across multiple independent CI sources.

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Microsoft.Build.BuildCheck.UnitTests.EndToEndTests.TestBuildCheckTemplate

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

flaky-test-id: Microsoft.Build.BuildCheck.UnitTests.EndToEndTests.TestBuildCheckTemplate

Action: Quarantine (6a)
Tracked by #14392

• Distinct sources: 6 (2 PRs + 4 rolling builds)
• Rolling builds: 1498681, 1501229, 1507966, 1509637
• Legs: CoreOnMac, CoreOnWindows | TFM: net10.0
• Assembly: Microsoft.Build.BuildCheck.UnitTests
• First seen: 2026-07-11 | Last seen: 2026-07-15
• Multiple distinct error hashes (6): sporadic/non-deterministic
• Sample: build 1506605

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Microsoft.Build.Engine.UnitTests.NetTaskHost_E2E_Tests.NetTaskHost_SymlinkedSdkPath_ShouldNotCauseMSB4216

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

flaky-test-id: Microsoft.Build.Engine.UnitTests.NetTaskHost_E2E_Tests.NetTaskHost_SymlinkedSdkPath_ShouldNotCauseMSB4216

Action: Quarantine (6a)
Tracked by #14393

• Distinct sources: 4 (4 distinct PRs, 0 rolling builds)
• Multiple distinct error hashes (7): sporadic/non-deterministic
• Legs: CoreOnLinux, CoreOnMac | TFM: net10.0
• Assembly: Microsoft.Build.Engine.UnitTests
• First seen: 2026-07-03 | Last seen: 2026-07-15
• Sample: build 1506605

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Microsoft.Build.UnitTests.TerminalLogger_Tests.ReplayBinaryLogWithFewerNodesThanOriginalBuild

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

flaky-test-id: Microsoft.Build.UnitTests.TerminalLogger_Tests.ReplayBinaryLogWithFewerNodesThanOriginalBuild

Action: Quarantine (6a)
Tracked by #14394

• Distinct sources: 3 (1 PR + 2 rolling builds)
• Rolling builds: 1498777, 1507790
• Multiple distinct error hashes (3): sporadic/non-deterministic
• Legs: CoreOnMac | TFM: net10.0
• Assembly: Microsoft.Build.Engine.UnitTests
• First seen: 2026-07-08 | Last seen: 2026-07-15
• Sample: build 1510234

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.

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