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Flaky-test detector: open PRs ready-for-review; drop newly-filed-issues section from PR body - #13958

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Flaky-test detector: open PRs ready-for-review; drop newly-filed-issues section from PR body#13958
ViktorHofer merged 3 commits into
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Follow-up to #13938, addressing two pieces of feedback on how the flaky-test detector opens its combined quarantine/un-quarantine PR.

1. Open quarantine/un-quarantine PRs ready-for-review (not draft)

The detector previously opened its PR as a draft (draft: true). dnceng AzDO build validation does not run on draft PRs, so CI only kicked in once a maintainer marked the PR ready for review (observed on #13952). Since these PRs are mechanical [ActiveIssue] add/removes that benefit from immediate CI validation, switch to draft: false so CI runs as soon as the PR is opened.

2. Don't list newly-filed tracking issues in the PR body

On an un-quarantine PR (#13952), the agent appended a "New flaky test issues filed this run" section referencing freshly-filed issues (e.g. #13949-#13951). Those issues are not acted on by the PR (they only become quarantine-eligible on a later run), so the #number references created a misleading issue<->PR cross-link. Step 8 now explicitly instructs the agent to reference only the issues for tests it actually quarantines or un-quarantines in that PR.

Frontmatter changed (draft + description), so the lock file was regenerated; cron is preserved at 38 11.

…wly-filed-issues section from PR body

Open the combined quarantine/un-quarantine PR as non-draft (draft: false) so
dnceng CI validation runs immediately instead of only after a maintainer marks
it ready. Also instruct the agent not to list create_issue-filed tracking
issues in the PR body, since those issues are not acted on by the PR and the
#number references create a misleading issue<->PR cross-link.

Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>
Copilot AI review requested due to automatic review settings June 5, 2026 12:15
@ViktorHofer
ViktorHofer requested a review from a team as a code owner June 5, 2026 12:15

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Pull request overview

Updates the flaky-test detector agentic workflow guidance and safe-output configuration so that its generated quarantine/un-quarantine PRs trigger CI immediately and its PR body only references issues that the PR actually acts on.

Changes:

  • Switch combined quarantine/un-quarantine PR creation from draft to non-draft (ready-for-review) so build validation runs immediately.
  • Update Step 8 PR-body guidance to avoid listing newly-filed tracking issues that aren’t part of the PR’s quarantine/un-quarantine edits.
  • Regenerate the gh-aw lock file to reflect the frontmatter changes (including draft: false) while preserving the existing schedule.
Show a summary per file
File Description
.github/workflows/flaky-test-detector.agent.md Updates workflow description, PR creation mode, and PR-body instructions to avoid misleading issue↔PR cross-links.
.github/workflows/flaky-test-detector.agent.lock.yml Regenerated lock reflecting updated frontmatter (notably draft: false) and updated embedded description text.

Copilot's findings

  • Files reviewed: 2/2 changed files
  • Comments generated: 0

ViktorHofer and others added 2 commits June 5, 2026 14:20
…dy-for-review

Detector: render each rolling build id in tracking-issue bodies (and OPEN-issue
comments) as a markdown link to its AzDO build results page, deriving the URL
from sampleBuildUrl's form, instead of plain-text ids.

Fixer: open fix PRs as non-draft (draft: false) so dnceng CI validation runs
immediately, matching the detector change. Lock regenerated; cron preserved at
38 12.

Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>
The directory-glob allowlist (src/**/*UnitTests*/**/*.cs) produced false
negatives on valid test files (e.g. src/Build.UnitTests/Evaluation/
Preprocessor_Tests.cs), silently blocking legitimate fixes and failing the
safe_outputs job. The product-code guard is instead provided by excluded-files
+ protected-files, the body's 'edit only the test's own file' rule plus a git
diff check, and mandatory human review before any PR can merge. Lock
regenerated; cron preserved at 38 12, draft:false retained.

Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>
@ViktorHofer
ViktorHofer enabled auto-merge (squash) June 5, 2026 12:32
@ViktorHofer
ViktorHofer merged commit fa755ca into main Jun 5, 2026
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@ViktorHofer
ViktorHofer deleted the flaky-detector-pr-nondraft branch June 5, 2026 13:26
This was referenced Aug 12, 2026
WarperSan pushed a commit to WarperSan/ThunderPipe that referenced this pull request Aug 12, 2026
Updated
[Microsoft.Build.Utilities.Core](https://github.com/dotnet/msbuild) from
18.8.2 to 18.9.6.

<details>
<summary>Release notes</summary>

_Sourced from [Microsoft.Build.Utilities.Core's
releases](https://github.com/dotnet/msbuild/releases)._

## 18.9.6

## What's Changed
* [vs18.6] Update dependencies from dotnet/arcade by
@​dotnet-maestro[bot] in dotnet/msbuild#13793
* [vs18.0] Update dependencies from dotnet/arcade by
@​dotnet-maestro[bot] in dotnet/msbuild#13859
* [vs18.6] Update dependencies from dotnet/arcade by
@​dotnet-maestro[bot] in dotnet/msbuild#13858
* [vs18.7] Update dependencies from dotnet/arcade by
@​dotnet-maestro[bot] in dotnet/msbuild#13863
* CsWin32 follow-up: CLR metadata + TypeLib interop migration by
@​JeremyKuhne in dotnet/msbuild#13853
* Update vmr-sb-validation.yml for Azure Pipelines by @​meghnave in
dotnet/msbuild#13871
* Test: keep shell alive 15s in ToolTaskCanChangeCanonicalErrorFormat
(#​13734) by @​jankratochvilcz in
dotnet/msbuild#13878
* Add vs18.8 to merge-flow config by @​OvesN in
dotnet/msbuild#13877
* Stable branding for 18.8 release by @​OvesN in
dotnet/msbuild#13883
* Bump main to 18.9.0 after vs18.8 snap by @​OvesN in
dotnet/msbuild#13880
* Avoid checkout in insertion pipeline by @​rainersigwald in
dotnet/msbuild#13887
* Report actual launch path in MSB4216 for Runtime="NET" task host by
@​ViktorHofer in dotnet/msbuild#13889
* Migrate Tlblmp and AxImp to Multithreaded Execution by @​AlesProkop in
dotnet/msbuild#13708
* Replace ErrorUtilities assertion methods with Assumed API and BCL
throw helpers by @​DustinCampbell in
dotnet/msbuild#13790
* Fix CLR_E_SHIM_RUNTIMELOAD in RAR's IMetaDataDispenser activation by
@​JeremyKuhne in dotnet/msbuild#13899
* [main] Update dependencies from nuget/nuget.client by
@​dotnet-maestro[bot] in dotnet/msbuild#13905
* [main] Update dependencies from dotnet/arcade by @​dotnet-maestro[bot]
in dotnet/msbuild#13907
* [main] Update dependencies from dotnet/roslyn by @​dotnet-maestro[bot]
in dotnet/msbuild#13910
* [vs17.14] Update dependencies from dotnet/arcade by
@​dotnet-maestro[bot] in dotnet/msbuild#13908
* [vs18.0] Update dependencies from dotnet/arcade by
@​dotnet-maestro[bot] in dotnet/msbuild#13906
* Fix ToolTask output loss: increase EOF pipe timeout from 2s to 30s by
@​huulinhnguyen-dev in dotnet/msbuild#13767
* Improve symlink cycle condition by @​GangWang01 in
dotnet/msbuild#13901
* [vs18.6] Update dependencies from dotnet/arcade by
@​dotnet-maestro[bot] in dotnet/msbuild#13904
* Add flaky-test detection and auto-fix agentic workflows by
@​ViktorHofer in dotnet/msbuild#13915
* Quote --ignore-exit-code values so the quarantine pipeline does not
shell-split on Unix by @​ViktorHofer in
dotnet/msbuild#13918
* Fix flaky-test detector PR-evidence loss and raise scan limits by
@​ViktorHofer in dotnet/msbuild#13919
* Tighten the pr review agent by @​JanKrivanek in
dotnet/msbuild#13921
* Add environment variables for governance detection by @​ViktorHofer in
dotnet/msbuild#13920
* Change IsPackable to true and add IsShipping flag by @​ViktorHofer in
dotnet/msbuild#13924
* [vs18.7] Update dependencies from dotnet/arcade by
@​dotnet-maestro[bot] in dotnet/msbuild#13911
* Make flaky detector verify recurrence postdates the fix before
commenting by @​ViktorHofer in
dotnet/msbuild#13930
* Fix AbsolutePath.GetCanonicalForm process state leak on Windows by
@​OvesN in dotnet/msbuild#13788
* Fix flaky detector: unblock dnceng feed, fail fast, and defer
quarantine to a second run by @​ViktorHofer in
dotnet/msbuild#13936
* Update documentation for ImplicitUsings element by @​drewnoakes in
dotnet/msbuild#13900
* [vs18.6] Point OptProf bootstrapper at rel/stable instead of int.main
by @​AlesProkop in dotnet/msbuild#13923
* Add CS8618 suppressor for required MSBuild task properties by
@​AArnott in dotnet/msbuild#13926
* Tighten NodeLaunchData.EnvironmentOverrides nullability to
IDictionary<string, string?>? by @​OvesN with @​Copilot in
dotnet/msbuild#13815
* Fix ToolTask EOF wait to be STA-safe via CountdownEvent (MSB4018 in
AspNetCompiler) by @​YuliiaKovalova in
dotnet/msbuild#13917
* [automated] Merge branch 'vs18.6' => 'vs18.7' by @​github-actions[bot]
in dotnet/msbuild#13941
* Localized file check-in by OneLocBuild Task: Build definition ID 9434:
Build ID 14192258 by @​dotnet-bot in
dotnet/msbuild#13849
* Bumping to 10.0.8 runtime packages by @​OvesN in
dotnet/msbuild#13898
* Flaky-test workflow: reassure on empty PR list + drop local
reproduction (quarantine-first) by @​ViktorHofer in
dotnet/msbuild#13938
* [Flaky Test] Un-quarantine 5 consistently-green tests by
@​github-actions[bot] in dotnet/msbuild#13952
* Flaky-test detector: open PRs ready-for-review; drop
newly-filed-issues section from PR body by @​ViktorHofer in
dotnet/msbuild#13958
* [Flaky Test] Quarantine 4 flaky tests by @​github-actions[bot] in
dotnet/msbuild#13937
* Flaky-test: fix duplicate-issue bug by switching dedup key to a
visible code-block key by @​ViktorHofer in
dotnet/msbuild#13963
* CsWin32 follow-up: WindowsNative + VS Setup Configuration + remaining
hand-rolled interop by @​JeremyKuhne in
dotnet/msbuild#13872
* Add the reviewer release skill checking if the Learn article Change
waves is updated by @​GangWang01 in
dotnet/msbuild#13840
* [main] Source code updates from dotnet/dotnet by @​dotnet-maestro[bot]
in dotnet/msbuild#13977
 ... (truncated)

Commits viewable in [compare
view](dotnet/msbuild@v18.8.2...v18.9.6).
</details>

[![Dependabot compatibility
score](https://dependabot-badges.githubapp.com/badges/compatibility_score?dependency-name=Microsoft.Build.Utilities.Core&package-manager=nuget&previous-version=18.8.2&new-version=18.9.6)](https://docs.github.com/en/github/managing-security-vulnerabilities/about-dependabot-security-updates#about-compatibility-scores)

Dependabot will resolve any conflicts with this PR as long as you don't
alter it yourself. You can also trigger a rebase manually by commenting
`@dependabot rebase`.

[//]: # (dependabot-automerge-start)
[//]: # (dependabot-automerge-end)

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<details>
<summary>Dependabot commands and options</summary>
<br />

You can trigger Dependabot actions by commenting on this PR:
- `@dependabot rebase` will rebase this PR
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</details>

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Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>
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