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Test failure: IdsConversionsWithRegionTest America/Vancouver America/Los_Angeles mismatch #136758

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Test failure: IdsConversionsWithRegionTest America/Vancouver America/Los_Angeles mismatch#136758
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Known Build ErrorUse this to report build issues in the .NET Helix tabarea-System.DateTimeblocking-clean-ciBlocking PR or rolling runs of 'runtime' or 'runtime-extra-platforms'untriagedNew issue has not been triaged by the area owner

Description

@MihaZupan
MihaZupan
opened on Oct 31, 2026

Build Information

Build: https://dev.azure.com/dnceng-public/cbb18261-c48f-4abb-8651-8cdcb5474649/_build/results?buildId=1657662
Build error leg or test failing: System.Tests.TimeZoneInfoTests.IdsConversionsWithRegionTest
Pull request: https://github.com/dotnet/runtime.git/pull/136752

Error Message

DO NOT USE JSON BELOW IF THIS IS A BUILD BREAK otherwise build analysis will allow pull requests to merge that break the build worse. For a build break, do not use this issue form. Make a regular new issue.

Fill the error message using step by step known issues guidance.

{
  "ErrorMessage": ["System.Tests.TimeZoneInfoTests.IdsConversionsWithRegionTest", "America/Los_Angeles"],
  "ErrorPattern": "",
  "BuildRetry": false,
  "ExcludeConsoleLog": false
}

Report

Build Repository Test Pull Request
1661456 dotnet/runtime System.Tests.TimeZoneInfoTests.IdsConversionsWithRegionTest #136900
1661452 dotnet/runtime System.Tests.TimeZoneInfoTests.IdsConversionsWithRegionTest #136867
1661475 dotnet/runtime System.Tests.TimeZoneInfoTests.IdsConversionsWithRegionTest #136901
1661478 dotnet/runtime System.Tests.TimeZoneInfoTests.IdsConversionsWithRegionTest #132117
1661367 dotnet/runtime System.Tests.TimeZoneInfoTests.IdsConversionsWithRegionTest
1661357 dotnet/runtime System.Tests.TimeZoneInfoTests.IdsConversionsWithRegionTest #136821
1661350 dotnet/runtime System.Tests.TimeZoneInfoTests.IdsConversionsWithRegionTest #136782
1661327 dotnet/runtime WasmTestOnV8-ST-System.Runtime.Tests.WorkItemExecution
1661362 dotnet/runtime System.Tests.TimeZoneInfoTests.IdsConversionsWithRegionTest #136898
1661223 dotnet/runtime System.Tests.TimeZoneInfoTests.IdsConversionsWithRegionTest #133659
1661236 dotnet/runtime System.Tests.TimeZoneInfoTests.IdsConversionsWithRegionTest #136893
1661176 dotnet/runtime System.Tests.TimeZoneInfoTests.IdsConversionsWithRegionTest #135287
1661113 dotnet/runtime System.Tests.TimeZoneInfoTests.IdsConversionsWithRegionTest #135553
1661182 dotnet/runtime System.Tests.TimeZoneInfoTests.IdsConversionsWithRegionTest #136828
1661153 dotnet/runtime System.Tests.TimeZoneInfoTests.IdsConversionsWithRegionTest #136882
1661077 dotnet/runtime System.Tests.TimeZoneInfoTests.IdsConversionsWithRegionTest #136001
1661120 dotnet/runtime System.Tests.TimeZoneInfoTests.IdsConversionsWithRegionTest #136895
1661019 dotnet/runtime System.Tests.TimeZoneInfoTests.IdsConversionsWithRegionTest #132915
1660982 dotnet/runtime System.Tests.TimeZoneInfoTests.IdsConversionsWithRegionTest #136887
1660877 dotnet/runtime System.Tests.TimeZoneInfoTests.IdsConversionsWithRegionTest #136837
1660916 dotnet/runtime System.Tests.TimeZoneInfoTests.IdsConversionsWithRegionTest #136862
1660866 dotnet/runtime System.Tests.TimeZoneInfoTests.IdsConversionsWithRegionTest #136883
1660807 dotnet/runtime System.Tests.TimeZoneInfoTests.IdsConversionsWithRegionTest #136881
1660693 dotnet/runtime System.Tests.TimeZoneInfoTests.IdsConversionsWithRegionTest #136875
1660723 dotnet/runtime System.Tests.TimeZoneInfoTests.IdsConversionsWithRegionTest #135555
1660768 dotnet/runtime System.Tests.TimeZoneInfoTests.IdsConversionsWithRegionTest #136879
1660678 dotnet/runtime System.Tests.TimeZoneInfoTests.IdsConversionsWithRegionTest #136874
1660649 dotnet/runtime System.Tests.TimeZoneInfoTests.IdsConversionsWithRegionTest #136870
1660656 dotnet/runtime System.Tests.TimeZoneInfoTests.IdsConversionsWithRegionTest #136871
1660588 dotnet/runtime System.Tests.TimeZoneInfoTests.IdsConversionsWithRegionTest #136684
1660583 dotnet/runtime System.Tests.TimeZoneInfoTests.IdsConversionsWithRegionTest #136867
1660543 dotnet/runtime System.Tests.TimeZoneInfoTests.IdsConversionsWithRegionTest #136826
1660563 dotnet/runtime System.Tests.TimeZoneInfoTests.IdsConversionsWithRegionTest
1660509 dotnet/runtime System.Tests.TimeZoneInfoTests.IdsConversionsWithRegionTest #136864
1660444 dotnet/runtime System.Tests.TimeZoneInfoTests.IdsConversionsWithRegionTest #130367
1660388 dotnet/runtime System.Tests.TimeZoneInfoTests.IdsConversionsWithRegionTest #136792
1660391 dotnet/runtime System.Tests.TimeZoneInfoTests.IdsConversionsWithRegionTest #136793
1660351 dotnet/runtime System.Tests.TimeZoneInfoTests.IdsConversionsWithRegionTest #136527
1660379 dotnet/runtime System.Tests.TimeZoneInfoTests.IdsConversionsWithRegionTest #136656
1660348 dotnet/runtime System.Tests.TimeZoneInfoTests.IdsConversionsWithRegionTest #136191
1660336 dotnet/runtime System.Tests.TimeZoneInfoTests.IdsConversionsWithRegionTest #136856
1660276 dotnet/runtime System.Tests.TimeZoneInfoTests.IdsConversionsWithRegionTest #136699
1660315 dotnet/runtime System.Tests.TimeZoneInfoTests.IdsConversionsWithRegionTest #136852
1660316 dotnet/runtime System.Tests.TimeZoneInfoTests.IdsConversionsWithRegionTest #136854
1660282 dotnet/runtime System.Tests.TimeZoneInfoTests.IdsConversionsWithRegionTest #136828
1660270 dotnet/runtime System.Tests.TimeZoneInfoTests.IdsConversionsWithRegionTest #136852
1660234 dotnet/runtime System.Tests.TimeZoneInfoTests.IdsConversionsWithRegionTest #136845
1660167 dotnet/runtime System.Tests.TimeZoneInfoTests.IdsConversionsWithRegionTest #136846
1660022 dotnet/runtime System.Tests.TimeZoneInfoTests.IdsConversionsWithRegionTest #136837
1660045 dotnet/runtime System.Tests.TimeZoneInfoTests.IdsConversionsWithRegionTest #136838
1658789 dotnet/runtime System.Tests.TimeZoneInfoTests.IdsConversionsWithRegionTest #136777
1659957 dotnet/runtime System.Tests.TimeZoneInfoTests.IdsConversionsWithRegionTest #136828
1659938 dotnet/runtime System.Tests.TimeZoneInfoTests.IdsConversionsWithRegionTest #136467
1659923 dotnet/runtime System.Tests.TimeZoneInfoTests.IdsConversionsWithRegionTest
1659613 dotnet/runtime System.Tests.TimeZoneInfoTests.IdsConversionsWithRegionTest #136486
1659358 dotnet/runtime System.Tests.TimeZoneInfoTests.IdsConversionsWithRegionTest #136782
1659213 dotnet/runtime System.Tests.TimeZoneInfoTests.IdsConversionsWithRegionTest #136823
1659147 dotnet/runtime System.Tests.TimeZoneInfoTests.IdsConversionsWithRegionTest #135196
1659094 dotnet/runtime System.Tests.TimeZoneInfoTests.IdsConversionsWithRegionTest #136821
1659075 dotnet/runtime System.Tests.TimeZoneInfoTests.IdsConversionsWithRegionTest #135475
1659041 dotnet/runtime System.Tests.TimeZoneInfoTests.IdsConversionsWithRegionTest #136817
1658938 dotnet/runtime System.Tests.TimeZoneInfoTests.IdsConversionsWithRegionTest #136808
1658911 dotnet/runtime System.Tests.TimeZoneInfoTests.IdsConversionsWithRegionTest #136803
1658901 dotnet/runtime System.Tests.TimeZoneInfoTests.IdsConversionsWithRegionTest #136801
1658830 dotnet/runtime System.Tests.TimeZoneInfoTests.IdsConversionsWithRegionTest
1658555 dotnet/runtime System.Tests.TimeZoneInfoTests.IdsConversionsWithRegionTest
1658639 dotnet/runtime System.Tests.TimeZoneInfoTests.IdsConversionsWithRegionTest #136782
1658515 dotnet/runtime System.Tests.TimeZoneInfoTests.IdsConversionsWithRegionTest #136779
1658492 dotnet/runtime System.Tests.TimeZoneInfoTests.IdsConversionsWithRegionTest #136778
1658437 dotnet/runtime System.Tests.TimeZoneInfoTests.IdsConversionsWithRegionTest #136751
1658422 dotnet/runtime System.Tests.TimeZoneInfoTests.IdsConversionsWithRegionTest #136769
1658079 dotnet/runtime System.Tests.TimeZoneInfoTests.IdsConversionsWithRegionTest #136561
1658056 dotnet/runtime System.Tests.TimeZoneInfoTests.IdsConversionsWithRegionTest #136684
1657662 dotnet/runtime System.Tests.TimeZoneInfoTests.IdsConversionsWithRegionTest #136752

Summary

24-Hour Hit Count 7-Day Hit Count 1-Month Count
55 74 74

Activity

  1. MihaZupan
    added
    blocking-clean-ciBlocking PR or rolling runs of 'runtime' or 'runtime-extra-platforms'
    Known Build ErrorUse this to report build issues in the .NET Helix tab
    area-System.DateTime
    on Oct 31, 2026
  2. dotnet-policy-service
    added
    untriagedNew issue has not been triaged by the area owner
    on Oct 31, 2026

  3. dotnet-policy-service commented on Oct 31, 2026

    @dotnet-policy-service
    dotnet-policy-serviceBot
    on Oct 31, 2026 – with Dotnet Policy Service
    Contributor

    Tagging subscribers to this area: @dotnet/area-system-datetime
    See info in area-owners.md if you want to be subscribed.

  4. MihaZupan commented on Oct 31, 2026

    @MihaZupan
    MihaZupan
    on Oct 31, 2026
    MemberAuthor
    [FAIL] System.Tests.TimeZoneInfoTests.IdsConversionsWithRegionTest(windowsId: "Pacific Standard Time", ianaId: "America/Vancouver", region: "CA")
Assert.Equal() Failure: Strings differ
                   ↓ (pos 8)
Expected: "America/Vancouver"
Actual:   "America/Los_Angeles"
                   ↑ (pos 8)
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    Known Build ErrorUse this to report build issues in the .NET Helix tabarea-System.DateTimeblocking-clean-ciBlocking PR or rolling runs of 'runtime' or 'runtime-extra-platforms'untriagedNew issue has not been triaged by the area owner

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