Assert failure in GC/API/GC/Collect_Aggressive_LargePages/Collect_Aggressive_LargePages.cmd

## Build Information
Build: https://dev.azure.com/dnceng-public/public/_build/results?buildId=1501377
Build error leg or test failing: GC/API/GC/Collect_Aggressive_LargePages/Collect_Aggressive_LargePages.cmd

## Error Message

Fill the error message using [step by step known issues guidance](https://github.com/dotnet/arcade/blob/main/Documentation/Build%20Analysis/KnownIssueJsonStepByStep.md).

```json
{
"ErrorPattern": "CORECLR! GCCoop::GCCoop \\+.+\\(.+\\)",
"BuildRetry": false,
"ExcludeConsoleLog": false
}
```

### Known issue validation
**Build: :mag_right:** https://dev.azure.com/dnceng-public/public/_build/results?buildId=1501377
**Error message validated:** `[CORECLR! GCCoop::GCCoop \+.+\(.+\)`]
**Result validation:** :white_check_mark: Known issue matched with the provided build.
**Validation performed at:** 7/9/2026 8:59:41 PM UTC

### Report

|Build|Repository|Test|Pull Request|
|---|---|---|---|
|[1594615](https://dev.azure.com/dnceng-public/public/_build/results?buildId=1594615)|dotnet/runtime|[GC/API/GC/Collect_Aggressive_LargePages/Collect_Aggressive_LargePages.cmd](https://dev.azure.com/dnceng-public/public/_build/results?buildId=1594615&view=ms.vss-test-web.build-test-results-tab&runId=44020866&resultId=103671)||
|[1590860](https://dev.azure.com/dnceng-public/public/_build/results?buildId=1590860)|dotnet/runtime|[GC/API/GC/Collect_Aggressive_LargePages/Collect_Aggressive_LargePages.cmd](https://dev.azure.com/dnceng-public/public/_build/results?buildId=1590860&view=ms.vss-test-web.build-test-results-tab&runId=43916718&resultId=103289)||
|[1587258](https://dev.azure.com/dnceng-public/public/_build/results?buildId=1587258)|dotnet/runtime|[GC/API/GC/Collect_Aggressive_LargePages/Collect_Aggressive_LargePages.cmd](https://dev.azure.com/dnceng-public/public/_build/results?buildId=1587258&view=ms.vss-test-web.build-test-results-tab&runId=43805904&resultId=103952)||
|[1584864](https://dev.azure.com/dnceng-public/public/_build/results?buildId=1584864)|dotnet/runtime|[GC/API/GC/Collect_Aggressive_LargePages/Collect_Aggressive_LargePages.cmd](https://dev.azure.com/dnceng-public/public/_build/results?buildId=1584864&view=ms.vss-test-web.build-test-results-tab&runId=43730708&resultId=103909)||
|[1580816](https://dev.azure.com/dnceng-public/public/_build/results?buildId=1580816)|dotnet/runtime|[GC/API/GC/Collect_Aggressive_LargePages/Collect_Aggressive_LargePages.cmd](https://dev.azure.com/dnceng-public/public/_build/results?buildId=1580816&view=ms.vss-test-web.build-test-results-tab&runId=43612560&resultId=103927)||
|[1574173](https://dev.azure.com/dnceng-public/public/_build/results?buildId=1574173)|dotnet/runtime|[GC/API/GC/Collect_Aggressive_LargePages/Collect_Aggressive_LargePages.cmd](https://dev.azure.com/dnceng-public/public/_build/results?buildId=1574173&view=ms.vss-test-web.build-test-results-tab&runId=43379036&resultId=101829)||
|[1570365](https://dev.azure.com/dnceng-public/public/_build/results?buildId=1570365)|dotnet/runtime|[GC/API/GC/Collect_Aggressive_LargePages/Collect_Aggressive_LargePages.cmd](https://dev.azure.com/dnceng-public/public/_build/results?buildId=1570365&view=ms.vss-test-web.build-test-results-tab&runId=43247162&resultId=103921)||
#### Summary
|24-Hour Hit Count|7-Day Hit Count|1-Month Count|
|---|---|---|
|0|3|7|

Start with GC/API/GC/Collect_Aggressive_LargePages/Collect_Aggressive_LargePages.cmd and the linked Azure build results, then inspect the failing test output for the GCCoop assertion. Determine why the test fails intermittently and verify the chosen fix by rerunning this test until the assertion no longer occurs.

Written by the indexing model from the issue text.