[Flaky Test] Microsoft.Build.Tasks.UnitTests.WriteLinesToFile_Tests.TransactionalModeSucceedsWithConcurrentOverwrites

[github-actions]

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

flaky-test-id: Microsoft.Build.Tasks.UnitTests.WriteLinesToFile_Tests.TransactionalModeSucceedsWithConcurrentOverwrites

Evidence

• Distinct sources: 3 (0 PRs + 3 rolling main builds)
• Rolling builds: 1496519, 1506834, 1514373
• Legs: FullOnWindows, FullOnWindows Release
• TFM: net472
• Assembly: Microsoft.Build.Tasks.UnitTests
• First seen: 2026-07-07 | Last seen: 2026-07-17
• Error hashes: 2 distinct (24ca1695, 321cf66e) — multiple distinct failure signatures confirm non-determinism
• Sample build: 1496519

Sample error:

Microsoft.Build.Exceptions.BuildAbortedException: Build was canceled. Failed to successfully launch or connect to a child MSBuild.exe process.

Notes

This test will be quarantined via [ActiveIssue("https://github.com/dotnet/msbuild/issues/<NNNN>")] (from Microsoft.DotNet.XUnitV3Extensions, namespace Xunit) until the underlying nondeterminism is fixed.

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 · 114.5 AIC · ⌖ 4.91 AIC · ⊞ 13.5K · ◷

[github-actions]

This test has been quarantined via [ActiveIssue] in PR #aw_pr1 (branch flaky-test/quarantine-2026-07-20). Evidence: 3 independent rolling CI builds (1496519, 1506834, 1514373) across FullOnWindows net472, first seen 2026-07-07, last seen 2026-07-17.

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 · 123.6 AIC · ⌖ 6.99 AIC · ⊞ 14.8K · ◷