System.Text.RegularExpressions.Tests.RegexKnownPatternTests.Docs_Examples_ValidateEmail failure

[runfoapp]

Starting:    System.Text.RegularExpressions.Tests (parallel test collections = on, max threads = 6)
  System.Text.RegularExpressions.Tests.RegexKnownPatternTests.Docs_Examples_ValidateEmail(engine: SourceGenerated, email: "david.jones@proseware.com", expectedIsValid: True) [FAIL]
    Assert.Equal() Failure
    Expected: True
    Actual:   False
    Stack Trace:
      /_/src/libraries/System.Text.RegularExpressions/tests/FunctionalTests/Regex.KnownPattern.Tests.cs(112,0): at System.Text.RegularExpressions.Tests.RegexKnownPatternTests.Docs_Examples_ValidateEmail(RegexEngine engine, String email, Boolean expectedIsValid)
      --- End of stack trace from previous location ---
  System.Text.RegularExpressions.Tests.RegexKnownPatternTests.Docs_Examples_ValidateEmail(engine: SourceGenerated, email: "jones@ms1.proseware.com", expectedIsValid: True) [FAIL]
    Assert.Equal() Failure
    Expected: True
    Actual:   False
    Stack Trace:
      /_/src/libraries/System.Text.RegularExpressions/tests/FunctionalTests/Regex.KnownPattern.Tests.cs(112,0): at System.Text.RegularExpressions.Tests.RegexKnownPatternTests.Docs_Examples_ValidateEmail(RegexEngine engine, String email, Boolean expectedIsValid)
      --- End of stack trace from previous location ---

Runfo Tracking Issue: System.Text.RegularExpressions.Tests.RegexKnownPatternTests.Docs_Examples_ValidateEmail failure

Build	Definition	Kind	Run Name	Console	Core Dump	Test Results	Run Client
1728898	runtime	PR 68241	net7.0-Linux-Debug-arm-CoreCLR_checked-(Ubuntu.1804.Arm32.Open)Ubuntu.1804.Armarch.Open@mcr.microsoft.com/dotnet-buildtools/prereqs:ubuntu-18.04-helix-arm32v7-bfcd90a-20200121150440	console.log			runclient.py
1728898	runtime	PR 68241	net7.0-Linux-Debug-arm-CoreCLR_checked-(Ubuntu.1804.Arm32.Open)Ubuntu.1804.Armarch.Open@mcr.microsoft.com/dotnet-buildtools/prereqs:ubuntu-18.04-helix-arm32v7-bfcd90a-20200121150440	console.log			runclient.py
1728898	runtime	PR 68241	net7.0-Linux-Debug-arm64-CoreCLR_checked-(Alpine.314.Arm64.Open)Ubuntu.1804.ArmArch.Open@mcr.microsoft.com/dotnet-buildtools/prereqs:alpine-3.14-helix-arm64v8-20210910135810-8a6f4f3	console.log			runclient.py
1728898	runtime	PR 68241	net7.0-Linux-Debug-arm64-CoreCLR_checked-(Alpine.314.Arm64.Open)Ubuntu.1804.ArmArch.Open@mcr.microsoft.com/dotnet-buildtools/prereqs:alpine-3.14-helix-arm64v8-20210910135810-8a6f4f3	console.log			runclient.py
1728819	runtime	PR 68283	net7.0-Linux-Debug-arm-CoreCLR_checked-(Ubuntu.1804.Arm32.Open)Ubuntu.1804.Armarch.Open@mcr.microsoft.com/dotnet-buildtools/prereqs:ubuntu-18.04-helix-arm32v7-bfcd90a-20200121150440	console.log			runclient.py
1728819	runtime	PR 68283	net7.0-Linux-Debug-arm-CoreCLR_checked-(Ubuntu.1804.Arm32.Open)Ubuntu.1804.Armarch.Open@mcr.microsoft.com/dotnet-buildtools/prereqs:ubuntu-18.04-helix-arm32v7-bfcd90a-20200121150440	console.log			runclient.py
1728819	runtime	PR 68283	net7.0-Linux-Debug-arm-CoreCLR_checked-(Ubuntu.1804.Arm32.Open)Ubuntu.1804.Armarch.Open@mcr.microsoft.com/dotnet-buildtools/prereqs:ubuntu-18.04-helix-arm32v7-bfcd90a-20200121150440	console.log			runclient.py
1728808	runtime	PR 68282	net7.0-Linux-Debug-arm-CoreCLR_checked-(Alpine.314.Arm32.Open)Ubuntu.1804.ArmArch.Open@mcr.microsoft.com/dotnet-buildtools/prereqs:alpine-3.14-helix-arm32v7-20210910135806-8a6f4f3	console.log			runclient.py
1728808	runtime	PR 68282	net7.0-Linux-Debug-arm-CoreCLR_checked-(Alpine.314.Arm32.Open)Ubuntu.1804.ArmArch.Open@mcr.microsoft.com/dotnet-buildtools/prereqs:alpine-3.14-helix-arm32v7-20210910135806-8a6f4f3	console.log			runclient.py
1728653	runtime	PR 67997	net7.0-Linux-Debug-arm-CoreCLR_checked-(Ubuntu.1804.Arm32.Open)Ubuntu.1804.Armarch.Open@mcr.microsoft.com/dotnet-buildtools/prereqs:ubuntu-18.04-helix-arm32v7-bfcd90a-20200121150440	console.log			runclient.py
1728653	runtime	PR 67997	net7.0-Linux-Debug-arm-CoreCLR_checked-(Ubuntu.1804.Arm32.Open)Ubuntu.1804.Armarch.Open@mcr.microsoft.com/dotnet-buildtools/prereqs:ubuntu-18.04-helix-arm32v7-bfcd90a-20200121150440	console.log			runclient.py
1728573	runtime	PR 68273	net7.0-Linux-Debug-arm64-Mono_release-(Ubuntu.1804.ArmArch.Open)Ubuntu.1804.ArmArch.Open@mcr.microsoft.com/dotnet-buildtools/prereqs:ubuntu-16.04-helix-arm64v8-20210106155927-56c6673	console.log			runclient.py
1728573	runtime	PR 68273	net7.0-Linux-Debug-arm64-Mono_release-(Ubuntu.1804.ArmArch.Open)Ubuntu.1804.ArmArch.Open@mcr.microsoft.com/dotnet-buildtools/prereqs:ubuntu-16.04-helix-arm64v8-20210106155927-56c6673	console.log			runclient.py
1728573	runtime	PR 68273	net7.0-Linux-Debug-arm64-Mono_release-(Ubuntu.1804.ArmArch.Open)Ubuntu.1804.ArmArch.Open@mcr.microsoft.com/dotnet-buildtools/prereqs:ubuntu-16.04-helix-arm64v8-20210106155927-56c6673	console.log			runclient.py
1728412	runtime	PR 67917	net7.0-Linux-Debug-arm-CoreCLR_checked-(Ubuntu.1804.Arm32.Open)Ubuntu.1804.Armarch.Open@mcr.microsoft.com/dotnet-buildtools/prereqs:ubuntu-18.04-helix-arm32v7-bfcd90a-20200121150440	console.log			runclient.py
1728412	runtime	PR 67917	net7.0-Linux-Debug-arm-CoreCLR_checked-(Ubuntu.1804.Arm32.Open)Ubuntu.1804.Armarch.Open@mcr.microsoft.com/dotnet-buildtools/prereqs:ubuntu-18.04-helix-arm32v7-bfcd90a-20200121150440	console.log			runclient.py
1728412	runtime	PR 67917	net7.0-windows-Debug-x86-CoreCLR_checked-Windows.10.Amd64.Open	console.log			runclient.py
1728412	runtime	PR 67917	net7.0-windows-Debug-x86-CoreCLR_checked-Windows.10.Amd64.Open	console.log			runclient.py
1728367	runtime	PR 68232	net7.0-Linux-Debug-arm64-Mono_release-(Ubuntu.1804.ArmArch.Open)Ubuntu.1804.ArmArch.Open@mcr.microsoft.com/dotnet-buildtools/prereqs:ubuntu-16.04-helix-arm64v8-20210106155927-56c6673	console.log			runclient.py
1728367	runtime	PR 68232	net7.0-Linux-Debug-arm64-Mono_release-(Ubuntu.1804.ArmArch.Open)Ubuntu.1804.ArmArch.Open@mcr.microsoft.com/dotnet-buildtools/prereqs:ubuntu-16.04-helix-arm64v8-20210106155927-56c6673	console.log			runclient.py
1728367	runtime	PR 68232	net7.0-Linux-Debug-arm-CoreCLR_checked-(Ubuntu.1804.Arm32.Open)Ubuntu.1804.Armarch.Open@mcr.microsoft.com/dotnet-buildtools/prereqs:ubuntu-18.04-helix-arm32v7-bfcd90a-20200121150440	console.log			runclient.py
1728367	runtime	PR 68232	net7.0-Linux-Debug-arm-CoreCLR_checked-(Ubuntu.1804.Arm32.Open)Ubuntu.1804.Armarch.Open@mcr.microsoft.com/dotnet-buildtools/prereqs:ubuntu-18.04-helix-arm32v7-bfcd90a-20200121150440	console.log			runclient.py
1728367	runtime	PR 68232	net7.0-Linux-Debug-arm64-CoreCLR_checked-(Alpine.314.Arm64.Open)Ubuntu.1804.ArmArch.Open@mcr.microsoft.com/dotnet-buildtools/prereqs:alpine-3.14-helix-arm64v8-20210910135810-8a6f4f3	console.log			runclient.py
1728367	runtime	PR 68232	net7.0-Linux-Debug-arm64-CoreCLR_checked-(Alpine.314.Arm64.Open)Ubuntu.1804.ArmArch.Open@mcr.microsoft.com/dotnet-buildtools/prereqs:alpine-3.14-helix-arm64v8-20210910135810-8a6f4f3	console.log			runclient.py
1728329	runtime	PR 60236	net7.0-OSX-Debug-x64-CoreCLR_release-OSX.1200.Amd64.Open	console.log			runclient.py
1728329	runtime	PR 60236	net7.0-OSX-Debug-x64-CoreCLR_release-OSX.1200.Amd64.Open	console.log			runclient.py
1728249	runtime	PR 68126	net7.0-Linux-Debug-arm-CoreCLR_checked-(Alpine.314.Arm32.Open)Ubuntu.1804.ArmArch.Open@mcr.microsoft.com/dotnet-buildtools/prereqs:alpine-3.14-helix-arm32v7-20210910135806-8a6f4f3	console.log			runclient.py
1728249	runtime	PR 68126	net7.0-Linux-Debug-arm-CoreCLR_checked-(Alpine.314.Arm32.Open)Ubuntu.1804.ArmArch.Open@mcr.microsoft.com/dotnet-buildtools/prereqs:alpine-3.14-helix-arm32v7-20210910135806-8a6f4f3	console.log			runclient.py
1728249	runtime	PR 68126	net7.0-Linux-Debug-arm-CoreCLR_checked-(Ubuntu.1804.Arm32.Open)Ubuntu.1804.Armarch.Open@mcr.microsoft.com/dotnet-buildtools/prereqs:ubuntu-18.04-helix-arm32v7-bfcd90a-20200121150440	console.log			runclient.py
1728249	runtime	PR 68126	net7.0-Linux-Debug-arm-CoreCLR_checked-(Ubuntu.1804.Arm32.Open)Ubuntu.1804.Armarch.Open@mcr.microsoft.com/dotnet-buildtools/prereqs:ubuntu-18.04-helix-arm32v7-bfcd90a-20200121150440	console.log			runclient.py
1728249	runtime	PR 68126	net7.0-Linux-Debug-arm-CoreCLR_checked-(Ubuntu.1804.Arm32.Open)Ubuntu.1804.Armarch.Open@mcr.microsoft.com/dotnet-buildtools/prereqs:ubuntu-18.04-helix-arm32v7-bfcd90a-20200121150440	console.log			runclient.py
1728243	runtime	PR 68251	net7.0-Linux-Debug-arm64-Mono_release-(Ubuntu.1804.ArmArch.Open)Ubuntu.1804.ArmArch.Open@mcr.microsoft.com/dotnet-buildtools/prereqs:ubuntu-16.04-helix-arm64v8-20210106155927-56c6673	console.log			runclient.py
1728243	runtime	PR 68251	net7.0-Linux-Debug-arm64-Mono_release-(Ubuntu.1804.ArmArch.Open)Ubuntu.1804.ArmArch.Open@mcr.microsoft.com/dotnet-buildtools/prereqs:ubuntu-16.04-helix-arm64v8-20210106155927-56c6673	console.log			runclient.py
1728213	runtime	PR 68178	net7.0-Linux-Debug-arm-CoreCLR_checked-(Alpine.314.Arm32.Open)Ubuntu.1804.ArmArch.Open@mcr.microsoft.com/dotnet-buildtools/prereqs:alpine-3.14-helix-arm32v7-20210910135806-8a6f4f3	console.log			runclient.py
1728213	runtime	PR 68178	net7.0-Linux-Debug-arm-CoreCLR_checked-(Alpine.314.Arm32.Open)Ubuntu.1804.ArmArch.Open@mcr.microsoft.com/dotnet-buildtools/prereqs:alpine-3.14-helix-arm32v7-20210910135806-8a6f4f3	console.log			runclient.py
1728213	runtime	PR 68178	net7.0-Linux-Debug-arm64-CoreCLR_checked-(Alpine.314.Arm64.Open)Ubuntu.1804.ArmArch.Open@mcr.microsoft.com/dotnet-buildtools/prereqs:alpine-3.14-helix-arm64v8-20210910135810-8a6f4f3	console.log			runclient.py
1728213	runtime	PR 68178	net7.0-Linux-Debug-arm64-CoreCLR_checked-(Alpine.314.Arm64.Open)Ubuntu.1804.ArmArch.Open@mcr.microsoft.com/dotnet-buildtools/prereqs:alpine-3.14-helix-arm64v8-20210910135810-8a6f4f3	console.log			runclient.py
1728204	runtime	PR 68260	net7.0-Linux-Debug-arm-CoreCLR_checked-(Ubuntu.1804.Arm32.Open)Ubuntu.1804.Armarch.Open@mcr.microsoft.com/dotnet-buildtools/prereqs:ubuntu-18.04-helix-arm32v7-bfcd90a-20200121150440	console.log			runclient.py
1728204	runtime	PR 68260	net7.0-Linux-Debug-arm-CoreCLR_checked-(Ubuntu.1804.Arm32.Open)Ubuntu.1804.Armarch.Open@mcr.microsoft.com/dotnet-buildtools/prereqs:ubuntu-18.04-helix-arm32v7-bfcd90a-20200121150440	console.log			runclient.py
1728184	runtime	PR 68242	net7.0-Linux-Debug-arm64-Mono_release-(Ubuntu.1804.ArmArch.Open)Ubuntu.1804.ArmArch.Open@mcr.microsoft.com/dotnet-buildtools/prereqs:ubuntu-16.04-helix-arm64v8-20210106155927-56c6673	console.log			runclient.py
1728184	runtime	PR 68242	net7.0-Linux-Debug-arm64-Mono_release-(Ubuntu.1804.ArmArch.Open)Ubuntu.1804.ArmArch.Open@mcr.microsoft.com/dotnet-buildtools/prereqs:ubuntu-16.04-helix-arm64v8-20210106155927-56c6673	console.log			runclient.py
1728162	runtime	PR 68235	net7.0-Linux-Debug-arm64-Mono_release-(Ubuntu.1804.ArmArch.Open)Ubuntu.1804.ArmArch.Open@mcr.microsoft.com/dotnet-buildtools/prereqs:ubuntu-16.04-helix-arm64v8-20210106155927-56c6673	console.log			runclient.py
1728162	runtime	PR 68235	net7.0-Linux-Debug-arm64-Mono_release-(Ubuntu.1804.ArmArch.Open)Ubuntu.1804.ArmArch.Open@mcr.microsoft.com/dotnet-buildtools/prereqs:ubuntu-16.04-helix-arm64v8-20210106155927-56c6673	console.log			runclient.py
1723200	runtime	PR 68146	net7.0-Linux-Debug-arm64-Mono_release-(Ubuntu.1804.ArmArch.Open)Ubuntu.1804.ArmArch.Open@mcr.microsoft.com/dotnet-buildtools/prereqs:ubuntu-16.04-helix-arm64v8-20210106155927-56c6673	console.log			runclient.py
1723200	runtime	PR 68146	net7.0-Linux-Debug-arm64-Mono_release-(Ubuntu.1804.ArmArch.Open)Ubuntu.1804.ArmArch.Open@mcr.microsoft.com/dotnet-buildtools/prereqs:ubuntu-16.04-helix-arm64v8-20210106155927-56c6673	console.log			runclient.py

Build Result Summary

Day Hit Count	Week Hit Count	Month Hit Count
14	15	15

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

Issue Details

---

Runfo Creating Tracking Issue (data being generated)

Author:	runfoapp[bot]
Assignees:	-
Labels:	area-System.Text.RegularExpressions, untriaged
Milestone:	-

[elinor-fung]

Seems to happening quite a bit today - most are on Linux arm, but some on other platform/architectures too. Some change from within the last day?

AzureDevOpsTests
| where TestName == "System.Text.RegularExpressions.Tests.RegexKnownPatternTests.Docs_Examples_ValidateEmail"
| where Message startswith "Assert.Equal"
| where Outcome == "Failed"
| join WorkItems on WorkItemId
| project
    TestRunName, Arguments,
    Queued, Started, Finished,
    ConsoleUri
| order by Queued asc 

TestRunName	Arguments	Queued	Started	Finished	ConsoleUri
net7.0-Linux-Debug-arm64-Mono_release-(Ubuntu.1804.ArmArch.Open)Ubuntu.1804.ArmArch.Open@mcr.microsoft.com/dotnet-buildtools/prereqs:ubuntu-16.04-helix-arm64v8-20210106155927-56c6673	engine: SourceGenerated, email: "david.jones@proseware.com", expectedIsValid: True	2022-04-18T02:56:50.114Z	2022-04-18T02:57:36.945Z	2022-04-18T03:02:29.107Z	https://helixre8s23ayyeko0k025g8.blob.core.windows.net/dotnet-runtime-refs-pull-68146-merge-e2568bdc2d624ff880/System.Text.RegularExpressions.Tests/1/console.a6add8b7.log?sv=2019-07-07&se=2022-05-08T02%3A56%3A48Z&sr=c&sp=rl&sig=no9TnEgIdhZBSsTCDylxow8ToWYVUtKgZ8qVVNkSo4o%3D
net7.0-Linux-Debug-arm64-Mono_release-(Ubuntu.1804.ArmArch.Open)Ubuntu.1804.ArmArch.Open@mcr.microsoft.com/dotnet-buildtools/prereqs:ubuntu-16.04-helix-arm64v8-20210106155927-56c6673	engine: SourceGenerated, email: "\"j\\\"s\\\"\"@proseware.com", expectedIsValid: True	2022-04-20T11:57:03.461Z	2022-04-20T11:58:58.735Z	2022-04-20T12:04:13.379Z	https://helixre8s23ayyeko0k025g8.blob.core.windows.net/dotnet-runtime-refs-pull-68235-merge-ed38d20f88414f79a5/System.Text.RegularExpressions.Tests/1/console.732dd6a3.log?sv=2019-07-07&se=2022-05-10T11%3A57%3A02Z&sr=c&sp=rl&sig=STU0eZJAIaXoSAwpncWIAVpQQb2%2FbFESDLVLdLeWqwg%3D
net7.0-Linux-Debug-arm64-Mono_release-(Ubuntu.1804.ArmArch.Open)Ubuntu.1804.ArmArch.Open@mcr.microsoft.com/dotnet-buildtools/prereqs:ubuntu-16.04-helix-arm64v8-20210106155927-56c6673	engine: SourceGenerated, email: "js@contoso.中国", expectedIsValid: True	2022-04-20T12:51:43.472Z	2022-04-20T12:51:44.081Z	2022-04-20T12:56:46.553Z	https://helixre8s23ayyeko0k025g8.blob.core.windows.net/dotnet-runtime-refs-pull-68242-merge-bc5564d161d14007bf/System.Text.RegularExpressions.Tests/1/console.3408e327.log?sv=2019-07-07&se=2022-05-10T12%3A51%3A42Z&sr=c&sp=rl&sig=SuzVbksfU09weU8ZoQnjJHCz5ImNKNNYxcbxnZG6OGA%3D
net7.0-Linux-Debug-arm-CoreCLR_checked-(Alpine.314.Arm32.Open)Ubuntu.1804.ArmArch.Open@mcr.microsoft.com/dotnet-buildtools/prereqs:alpine-3.14-helix-arm32v7-20210910135806-8a6f4f3	engine: SourceGenerated, email: "j@proseware.com9", expectedIsValid: True	2022-04-20T12:57:07.362Z	2022-04-20T12:57:08.268Z	2022-04-20T13:03:27.099Z	https://helixre8s23ayyeko0k025g8.blob.core.windows.net/dotnet-runtime-refs-pull-68178-merge-8e459591a4f1434db0/System.Text.RegularExpressions.Tests/1/console.e634ff74.log?sv=2019-07-07&se=2022-05-10T12%3A57%3A06Z&sr=c&sp=rl&sig=xSn5MwQyyWnNgPpaUeINTmQ1eSwde7LV8D0dDxAaBLs%3D
net7.0-Linux-Debug-arm-CoreCLR_checked-(Ubuntu.1804.Arm32.Open)Ubuntu.1804.Armarch.Open@mcr.microsoft.com/dotnet-buildtools/prereqs:ubuntu-18.04-helix-arm32v7-bfcd90a-20200121150440	engine: Compiled, email: "d.j@server1.proseware.com", expectedIsValid: True	2022-04-20T12:57:22.805Z	2022-04-20T12:58:32.734Z	2022-04-20T13:05:17.308Z	https://helixre8s23ayyeko0k025g8.blob.core.windows.net/dotnet-runtime-refs-pull-68260-merge-126e5491b7684164a0/System.Text.RegularExpressions.Tests/1/console.08c8c1cd.log?sv=2019-07-07&se=2022-05-10T12%3A57%3A20Z&sr=c&sp=rl&sig=I0Ob3cqUvqT9UAXcOUNcVE0YQE6OknltNyXCgomAcKQ%3D
net7.0-Linux-Debug-arm64-CoreCLR_checked-(Alpine.314.Arm64.Open)Ubuntu.1804.ArmArch.Open@mcr.microsoft.com/dotnet-buildtools/prereqs:alpine-3.14-helix-arm64v8-20210910135810-8a6f4f3	engine: SourceGenerated, email: "\"j\\\"s\\\"\"@proseware.com", expectedIsValid: True	2022-04-20T12:58:47.992Z	2022-04-20T12:59:38.005Z	2022-04-20T13:06:37.519Z	https://helixre8s23ayyeko0k025g8.blob.core.windows.net/dotnet-runtime-refs-pull-68178-merge-5ee69bf360534362bf/System.Text.RegularExpressions.Tests/1/console.259d7d3e.log?sv=2019-07-07&se=2022-05-10T12%3A58%3A46Z&sr=c&sp=rl&sig=L7NBKigA0xTO4cSHQRpZNSWz0YQf83z0v3IGfuoKnA4%3D
net7.0-Linux-Debug-arm64-Mono_release-(Ubuntu.1804.ArmArch.Open)Ubuntu.1804.ArmArch.Open@mcr.microsoft.com/dotnet-buildtools/prereqs:ubuntu-16.04-helix-arm64v8-20210106155927-56c6673	engine: SourceGenerated, email: "jones@ms1.proseware.com", expectedIsValid: True	2022-04-20T13:16:20.057Z	2022-04-20T13:16:26.866Z	2022-04-20T13:21:26.363Z	https://helixre8s23ayyeko0k025g8.blob.core.windows.net/dotnet-runtime-refs-pull-68251-merge-179fa82f98f84e9b90/System.Text.RegularExpressions.Tests/1/console.fbf3c55f.log?sv=2019-07-07&se=2022-05-10T13%3A16%3A19Z&sr=c&sp=rl&sig=V%2FSJkNe9U9nxczKPSyZvawjYCtqvfmOGFfyAcI8lcqk%3D
net7.0-Linux-Debug-arm-CoreCLR_checked-(Alpine.314.Arm32.Open)Ubuntu.1804.ArmArch.Open@mcr.microsoft.com/dotnet-buildtools/prereqs:alpine-3.14-helix-arm32v7-20210910135806-8a6f4f3	engine: SourceGenerated, email: "j.s@server1.proseware.com", expectedIsValid: True	2022-04-20T13:31:01.919Z	2022-04-20T13:31:02.653Z	2022-04-20T13:37:18.278Z	https://helixre8s23ayyeko0k025g8.blob.core.windows.net/dotnet-runtime-refs-pull-68126-merge-f53e672fedad4387ab/System.Text.RegularExpressions.Tests/1/console.b1ea3111.log?sv=2019-07-07&se=2022-05-10T13%3A31%3A00Z&sr=c&sp=rl&sig=ySQne5nDTugajJ%2FuNoek9pO0IBH8SqgX1ZIc%2FmMO8O0%3D
net7.0-Linux-Debug-arm-CoreCLR_checked-(Ubuntu.1804.Arm32.Open)Ubuntu.1804.Armarch.Open@mcr.microsoft.com/dotnet-buildtools/prereqs:ubuntu-18.04-helix-arm32v7-bfcd90a-20200121150440	engine: Compiled, email: "david.jones@proseware.com", expectedIsValid: True	2022-04-20T13:31:48.959Z	2022-04-20T13:32:32.144Z	2022-04-20T13:39:24.197Z	https://helixre8s23ayyeko0k025g8.blob.core.windows.net/dotnet-runtime-refs-pull-68126-merge-4b558ae3238f4c04ad/System.Text.RegularExpressions.Tests/1/console.2de23d5b.log?sv=2019-07-07&se=2022-05-10T13%3A31%3A48Z&sr=c&sp=rl&sig=z0019kh%2B2Us6xY5IxpXaIh3BfemkZ%2F%2BL7AubCyofvdk%3D
net7.0-OSX-Debug-x64-CoreCLR_release-OSX.1200.Amd64.Open	engine: Compiled, email: "js#internal@proseware.com", expectedIsValid: True	2022-04-20T14:13:24.512Z	2022-04-20T14:13:41.469Z	2022-04-20T14:14:50.219Z	https://helixre8s23ayyeko0k025g8.blob.core.windows.net/dotnet-runtime-refs-pull-60236-merge-391e431762294558b6/System.Text.RegularExpressions.Tests/1/console.df330206.log?sv=2019-07-07&se=2022-05-10T14%3A13%3A23Z&sr=c&sp=rl&sig=kvl%2B9kv%2Bxu3QctKdpzUE10NNyuFQjepIU3kjY3qSsQs%3D
net7.0-Linux-Debug-arm64-Mono_release-(Ubuntu.1804.ArmArch.Open)Ubuntu.1804.ArmArch.Open@mcr.microsoft.com/dotnet-buildtools/prereqs:ubuntu-16.04-helix-arm64v8-20210106155927-56c6673	engine: SourceGenerated, email: "js@contoso.中国", expectedIsValid: True	2022-04-20T14:33:29.653Z	2022-04-20T14:33:33.403Z	2022-04-20T14:38:29.716Z	https://helixre8s23ayyeko0k025g8.blob.core.windows.net/dotnet-runtime-refs-pull-68232-merge-4b7f3e52eaf742798e/System.Text.RegularExpressions.Tests/1/console.65df612e.log?sv=2019-07-07&se=2022-05-10T14%3A33%3A28Z&sr=c&sp=rl&sig=hT07DX%2BOZ6VSVxvNg%2Fu2PZ8AYRMbBnFCpI%2FCc2DsIzY%3D
net7.0-Linux-Debug-arm-CoreCLR_checked-(Ubuntu.1804.Arm32.Open)Ubuntu.1804.Armarch.Open@mcr.microsoft.com/dotnet-buildtools/prereqs:ubuntu-18.04-helix-arm32v7-bfcd90a-20200121150440	engine: SourceGenerated, email: "j.s@server1.proseware.com", expectedIsValid: True	2022-04-20T14:34:04.346Z	2022-04-20T14:34:36.287Z	2022-04-20T14:41:17.81Z	https://helixre8s23ayyeko0k025g8.blob.core.windows.net/dotnet-runtime-refs-pull-68232-merge-7e0cba4b94564b84b3/System.Text.RegularExpressions.Tests/1/console.51a27e77.log?sv=2019-07-07&se=2022-05-10T14%3A34%3A03Z&sr=c&sp=rl&sig=1RzY9fRB6MhztiwEjezWV20iDfYWqEIQNJovwagHLIU%3D
net7.0-Linux-Debug-arm64-CoreCLR_checked-(Alpine.314.Arm64.Open)Ubuntu.1804.ArmArch.Open@mcr.microsoft.com/dotnet-buildtools/prereqs:alpine-3.14-helix-arm64v8-20210910135810-8a6f4f3	engine: SourceGenerated, email: "j@proseware.com9", expectedIsValid: True	2022-04-20T14:38:31.14Z	2022-04-20T14:38:33.019Z	2022-04-20T14:45:30.952Z	https://helixre8s23ayyeko0k025g8.blob.core.windows.net/dotnet-runtime-refs-pull-68232-merge-9b590f4a111f4ee281/System.Text.RegularExpressions.Tests/1/console.8461bc70.log?sv=2019-07-07&se=2022-05-10T14%3A38%3A29Z&sr=c&sp=rl&sig=h7qdvz%2BL96F7ZQFMDbVWI%2F2qg2P0XaekG3pmxbXyYrs%3D
net7.0-Linux-Debug-arm-CoreCLR_checked-(Ubuntu.1804.Arm32.Open)Ubuntu.1804.Armarch.Open@mcr.microsoft.com/dotnet-buildtools/prereqs:ubuntu-18.04-helix-arm32v7-bfcd90a-20200121150440	engine: SourceGenerated, email: "d.j@server1.proseware.com", expectedIsValid: True	2022-04-20T15:24:34.089Z	2022-04-20T15:24:34.715Z	2022-04-20T15:30:59.601Z	https://helixre8s23ayyeko0k025g8.blob.core.windows.net/dotnet-runtime-refs-pull-67917-merge-6d15b0bbb59a47bb9c/System.Text.RegularExpressions.Tests/1/console.bc2ec805.log?sv=2019-07-07&se=2022-05-10T15%3A24%3A30Z&sr=c&sp=rl&sig=uVMzY3MXsaWP1IJlwP861wriuzXz1YmljP5OF4aXNR4%3D
net7.0-windows-Debug-x86-CoreCLR_checked-Windows.10.Amd64.Open	engine: Compiled, email: "js@contoso.中国", expectedIsValid: True	2022-04-20T15:36:56.758Z	2022-04-20T15:41:50.559Z	2022-04-20T15:46:36.551Z	https://helixre8s23ayyeko0k025g8.blob.core.windows.net/dotnet-runtime-refs-pull-67917-merge-3d7fcb4fca4e46aaa2/System.Text.RegularExpressions.Tests/1/console.58b181f2.log?sv=2019-07-07&se=2022-05-10T15%3A36%3A54Z&sr=c&sp=rl&sig=TbzOyomoV89jpdetpc4J8dlpg9RQmy%2BhCnkHAEGblm0%3D
net7.0-Linux-Debug-arm64-Mono_release-(Ubuntu.1804.ArmArch.Open)Ubuntu.1804.ArmArch.Open@mcr.microsoft.com/dotnet-buildtools/prereqs:ubuntu-16.04-helix-arm64v8-20210106155927-56c6673	engine: SourceGenerated, email: "david.jones@proseware.com", expectedIsValid: True	2022-04-20T17:03:17.218Z	2022-04-20T17:03:18.108Z	2022-04-20T17:08:17.513Z	https://helixre8s23ayyeko0k025g8.blob.core.windows.net/dotnet-runtime-refs-pull-68273-merge-ef32fc04e19f4084b7/System.Text.RegularExpressions.Tests/1/console.9218a976.log?sv=2019-07-07&se=2022-05-10T17%3A03%3A15Z&sr=c&sp=rl&sig=z0oR1qV3yv47UOI2mE%2B%2BtHdKH7x6PssQN%2Bh5Am8ih7U%3D

[stephentoub]

This test is written strangely... I suspect it's actually a timeout masquerading as a failure, as the test is catching a timeout exception and returning false as if IsMatch failed. And it's using a fairly small timeout of only 250ms; it could be that my change in #68146 is making it more likely to timeout as the timeout will be better respected. I'll submit a PR to try to fix it, assuming that's the issue.