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dotnet/runtime Known Build Errors Analysis (2026-03-22)
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build_analysis.md

dotnet/runtime Known Build Errors Analysis

Generated: 2026-03-22 | Total open issues: 201

Summary

Status Count
Investigated, no fix 123
Uninvestigated 32
Tests disabled 22
Active PR 11
Active recent PR 9
Active PR, not recent 3
Tracking external issue 1

Copilot Fixability Score Distribution

Score Count Description
1 43 Infra/env issue, not code-fixable
2 11 Mostly infra, unlikely code fix
3 8 Likely needs config/env changes
4 10 Possibly fixable but limited info
5 38 Moderate chance, may need investigation
6 34 Good chance with clear error info
7 14 Likely fixable - clear test/code issue
8 20 High confidence - clear stack trace + test fix
9 17 Very likely fixable - straightforward test fix
10 6 Almost certain - simple well-documented fix

All Issues (sorted by builds affected, descending)

# Issue Builds (Month) Builds (Week) Copilot Score Status
1 #123216 MsQuic fails with QUIC_STATUS_OUT_OF_MEMORY on AzureLinux 520 330 1 🔴 Tests disabled (workaround)
2 #124526 [android][clr] No peer certificates when executing System.Net.Http.Functional.Te... 493 428 3 🔴 Active recent PR (#125481)
3 #123796 XHarness package install failure on iOS due to devicectl NSPOSIXErrorDomain erro... 372 220 1 🔴 Investigated, no fix
4 #125107 AOT precompile failed on ios-arm64: 'No space left on device' (exit code 1) 211 80 1 🔴 Uninvestigated
5 #108299 Wasm build terminated with exit code 137 183 - 1 🔴 Investigated, no fix
6 #125135 [8.0] System.Exception: Failed to list devices - tvOS, iOS 177 21 1 🔴 Investigated, no fix
7 #119665 [Test][iOS] iOS.Device.Aot.Test fails with APP_LAUNCH_FAILURE 168 44 1 🔴 Investigated, no fix
8 #117164 Unable to pull image from mcr.microsoft.com 145 23 1 🔴 Investigated, no fix
9 #112633 [android] Android.Device_Emulator.JIT.Test failing on emulators with CoreCLR 125 13 1 🔴 Investigated, no fix
10 #120526 [android][arm64] System.Net.Sockets.Tests.SendTo_SyncForceNonBlocking.Datagram_U... 124 30 10 🟢 Active PR, not recent (#122556)
11 #103630 System.IO.Tests.Directory_Create_Tests.FileSystemWatcher_Directory_Create_InNest... 119 29 9 🟢 Active recent PR (#125818)
12 #125371 XHarness device enumeration failure for tvos-device (exit code 71 GENERAL_FAILUR... 104 21 1 🔴 Uninvestigated
13 #118603 [Android][CoreCLR] System.Security.Cryptography.Tests killed by lowmemorykiller 104 27 2 🔴 Investigated, no fix
14 #124462 baseservices failing for coreclr runtime-extra-platforms testing with "Process m... 96 16 1 🔴 Uninvestigated (untriaged)
15 #122222 Test_WPF_3226 runtime test fails in mono fullaotllvm mode 94 8 6 🟡 Investigated, no fix
16 #110173 Test failure: baseservices/exceptions/stackoverflow/stackoverflowtester/stackove... 94 1 2 🔴 Tests disabled (workaround)
17 #125440 Android arm32 device not found (armeabi-v7a architecture unavailable) 93 68 1 🔴 Uninvestigated (untriaged)
18 #117017 wasm build failure in CI 78 76 1 🔴 Investigated, no fix
19 #108103 iOS tests failing with WORKLOAD TIMED OUT - Killing user command. 72 1 1 🔴 Investigated, no fix
20 #121518 Android WebSocket failure 67 4 6 🟡 Investigated, no fix
21 #123957 Native abort (SIGABRT, exit 134) in JIT/SIMD/Vector3Interop_r on Linux x64 57 13 6 🟡 Uninvestigated (untriaged)
22 #104588 [outerloop] System.Runtime.Numerics.Tests crash with exit code 137 in linux debu... 56 14 2 🔴 Investigated, no fix
23 #101700 [8.0] Test failure in System.Diagnostics.Tests.ProcessTests.MainWindowHandle_Get... 56 14 9 🟢 Active recent PR (#125907)
24 #98964 [outerloop] System.Runtime.Tests crash with exit code 137 in linux debug coreclr 56 14 2 🔴 Investigated, no fix
25 #117486 [wasm] OpenQA.Selenium.WebDriverTimeoutException: timeout: Timed out receiving m... 55 22 2 🔴 Investigated, no fix
26 #114450 [macOS] SendTo_.*.Datagram_UDP_AccessDenied_Throws_DoesNotBind cannot reach host 55 33 6 🟡 Active PR, not recent (#122556)
27 #117974 browser-wasm linux Release LibraryTests queues timing out 47 13 5 🟡 Investigated, no fix
28 #125150 SIGABRT in System.Net.Http.Functional.Tests on macOS 14 44 14 6 🟡 Investigated, no fix
29 #125522 [8.0] Failed to find a suitable device for target tvos-device 42 32 1 🔴 Uninvestigated (untriaged)
30 #125769 [Mono] mini-llvm.c build failure: LLVMMono1CallConv undeclared after LLVM SDK ve... 40 40 1 🔴 Investigated, no fix
31 #124751 DNS localhost subdomain tests with AddressFamily fail on Android 35 4 8 🟢 Active PR, not recent (#125478)
32 #112093 [linux_x64_minifullaot/llvmfullaot] class loader exception type assertion fails 34 22 6 🟡 Investigated, no fix
33 #122494 Assertion failures: localhost resolves to non-loopback addresses on tvOS arm64 32 - 4 🟡 Uninvestigated
34 #113060 [Mono] Runtime test "test76531" fails in the LLVM (and mini) Full AOT configurat... 31 9 6 🟡 Investigated, no fix
35 #120606 CryptographicException in NonPowerOfTwoKeySizeOaepRoundtrip test 29 9 7 🟢 Active recent PR (#125911)
36 #96798 Error while retrieving client Settings for PipelineArtifact. HttpRequestExceptio... 28 15 3 🔴 Uninvestigated
37 #112946 [Android] System.Tests.RandomTests.Next_IntInt_Next_IntInt_AllValuesAreWithinRan... 26 13 7 🟢 Investigated, no fix
38 #112557 [linux-x64] [mono-aot] Test `Runtime_101731.TestConvertToInt64NativeSingle(3.402... 26 9 1 🔴 Investigated, no fix
39 #92290 MSBuild crashing in the build 26 7 1 🔴 Investigated, no fix
40 #103940 Test failure: System.IO.Tests.File_Move_Tests.File_Move_SynchronizingObject 25 9 8 🟢 Active recent PR (#125818)
41 #125776 iOS.CoreCLR.R2R.Test failure: Bad CPU type in executable 22 22 1 🔴 Uninvestigated (untriaged)
42 #111449 JSImportTest.BadCast test failure 22 22 9 🟢 Investigated, no fix
43 #105804 [NativeAOT-iOS] MacCatalyst fails to start/log nativeaot.SmokeTests tests 22 9 1 🔴 Investigated, no fix
44 #121902 Cose.Tests.TestKeyRing.CreateECDsa fails with "OSStatus error -50" 21 6 6 🟡 Active PR (#125909)
45 #124976 Build error: ilc exited with code 57005 19 4 1 🔴 Uninvestigated (untriaged)
46 #125052 System.Reflection.Context assertion failures: MethodImplFlags=NoInlining and mis... 18 - 4 🟡 Uninvestigated
47 #114653 [8.0][wasm] DefaultTemplate_AOT_InProjectFile test failure - aot-instances.dll p... 18 4 4 🟡 Investigated, no fix
48 #125295 System.IO.Tests.Directory_Delete_MountVolume.RunTest failure 16 12 9 🟢 Active PR (#125625)
49 #119023 Android System.Security.Cryptography test failure: Signing key verifies the CRL 15 5 8 🟢 Investigated, no fix
50 #100800 LibraryImportGenerator.Unit.Tests crashing on linux-x64 mono interpreter 13 1 5 🟡 Investigated, no fix
51 #90605 tracing/runtimeeventsource/nativeruntimeeventsource/nativeruntimeeventsource fai... 13 2 5 🟡 Tests disabled (workaround)
52 #110857 [release/8.0-staging][android] CI failures in `System.Security.Cryptography.X509... 12 6 9 🟢 Investigated, no fix
53 #125825 Assertion failure in ConnectAsync_WithBuffer_Succeeds on Android/MacCatalyst/tvO... 11 11 6 🟡 Uninvestigated
54 #125244 BlazorWasm_CannotAOT_InDebug test failure 11 - 9 🟢 Active PR (#336)
55 #108832 [Apple-mobile] `System.Tests.StringTests.[Starts,Ends]WithNoMatch_StringComparis... 11 6 6 🟡 Tests disabled (workaround)
56 #116697 [browser] Wasm.Build.Tests timeout - Timed out after 10s waiting for 'WASM EXIT' 10 2 4 🟡 Investigated, no fix
57 #104670 BinderTracingTest.ResolutionFlow times out 10 1 5 🟡 Investigated, no fix
58 #83422 [6.0] Android test failure: Failed to install mobile app 10 4 8 🟢 Investigated, no fix
59 #125826 Bad CPU type in executable causing iOS device test failure (exit code 21) 9 9 1 🔴 Active PR (#125897)
60 #122493 SocketException 'Connection reset by peer' causing test failures on android_arm6... 9 - 10 🟢 Uninvestigated
61 #117138 AF: *(_UNCHECKED_OBJECTREF *)handle == NULL (HndCreateHandle called by getJitHan... 9 3 5 🟡 Active PR (#125350)
62 #109653 [wasm] error NETSDK1147: To build this project, the following workloads must be ... 9 5 1 🔴 Investigated, no fix
63 #104825 [browser][wasm] Failed trying to read log messages via selenium: OpenQA.Selenium... 9 4 8 🟢 Investigated, no fix
64 #125233 BlazorWasm AOT not requiring trimming 8 - 5 🟡 Active PR (#336)
65 #123843 SystemTrustCertificateWithCustomRootTrust failure in CI 8 4 8 🟢 Active PR (#125910)
66 #120176 [wasm/browser] Failed to connect to socket /run/dbus/system_bus_socket 8 8 6 🟡 Investigated, no fix
67 #120116 runtime / Build / maccatalyst-x64 release MonoAOTOffsets / Build product failure 8 6 1 🔴 Uninvestigated (untriaged)
68 #118906 8.0: Http2_IncorrectServerPreface_RequestFailsWithAppropriateHttpProtocolExcepti... 8 7 6 🟡 Investigated, no fix
69 #114924 Failed to install runtime_python_requirements 8 1 1 🔴 Investigated, no fix
70 #103524 [browser] test failure: Tests timed out. Killing driver service 8 3 5 🟡 Investigated, no fix
71 #114698 [8.0] Long running test timeout: Wasm.Build.Tests.TestAppScenarios.WasmAppBuilde... 7 1 1 🔴 Investigated, no fix
72 #104671 GC/Regressions/v2.0-beta2/452950 test failure 7 1 6 🟡 Investigated, no fix
73 #125018 System.IO.Tests.File_Move_Tests.File_Move_Multiple_From_Watched_To_Unwatched_Mac... 6 1 10 🟢 Active recent PR (#125818)
74 #122874 iOS.Device test WorkItemExecutions 6 6 1 🔴 Investigated, no fix
75 #117546 WasmAppBuilderDebugLevelTests timeout failure 6 2 5 🟡 Investigated, no fix
76 #101423 System.IO.FileSystem.Tests.WorkItemExecution CI timeout on net9.0-osx-Debug-x64-... 6 1 1 🔴 Investigated, no fix
77 #82837 System.Security.Cryptography.X509Certificates.Tests.ChainTests.BuildInvalidSigna... 6 4 8 🟢 Tests disabled (workaround)
78 #123572 [Wasm] The request was canceled due to the configured HttpClient.Timeout of 100 ... 5 - 5 🟡 Investigated, no fix
79 #123396 APP_CRASH SIGABRT during coreclr_initialize on tvOS device (vm_map_enter allocat... 5 5 1 🔴 Investigated, no fix
80 #117520 BasicEventSourceTests.TestsManifestGeneration.Test_EventSource_EtwManifestGenera... 5 1 6 🟡 Investigated, no fix
81 #76488 Intermittent build failure in AfterSourceBuild: "Could not write state file" 5 2 1 🔴 Uninvestigated
82 #125624 Directory_ReparsePoints_MountVolume test failures 4 4 6 🟡 Active PR (#125625)
83 #123797 Assert.Equal failure in SocketAsyncEventArgsTest.Connect_Parallel_FailsOver (got... 4 4 10 🟢 Investigated, no fix
84 #122669 [mono] mono_thread_info_install_interrupt: previous_token should be INTERRUPT_ST... 4 3 5 🟡 Investigated, no fix
85 #120245 [wasm AOT] error : LLVM ERROR: out of memory 4 4 1 🔴 Investigated, no fix
86 #119140 Assertion failed: CREATE_CHECK_STRING(bSmallObjectHeapPtr || bLargeObjectHeapPtr... 4 - 5 🟡 Investigated, no fix
87 #117903 [release/8.0] TimeZoneInfoTests.Platform_TimeZoneNames failing on Android 4 3 6 🟡 Investigated, no fix
88 #112360 System.Data.OleDb.Tests crash with exit code -1073740771 4 1 5 🟡 Investigated, no fix
89 #111752 [8.0] JIT regression: DevDiv_255294.sh assert failed 4 2 6 🟡 Investigated, no fix
90 #107364 [9.0] Test assert failure in X509Certificates.Tests.RevocationTests.AiaTests.Aia... 4 - 9 🟢 Investigated, no fix
91 #103586 System.IO.Pipelines.Tests.PipeWriterTests.CompleteWithLargeWriteThrows fails in ... 4 1 6 🟡 Uninvestigated (untriaged)
92 #96968 Test failure BasicEventSourceTests.TestsUserErrors.Test_BadEventSource_Mismatche... 4 2 8 🟢 Active PR (#125908)
93 #92148 AzDo uploading failure: "Blob is incomplete" 4 1 1 🔴 Investigated, no fix
94 #88027 Test failure BasicEventSourceTests.TestsManifestGeneration.Test_EventSource_EtwM... 4 2 3 🔴 Investigated, no fix
95 #76140 3 System.Diagnostics tests failing - System.FormatException : The input is not a... 4 4 6 🟡 Tests disabled (workaround)
96 #119746 System.Xml.CharCheckingReaderTests fails with OutOfMemoryException 3 - 6 🟡 Investigated, no fix
97 #97020 System.IO.Tests.File_GetSetTimes_SafeFileHandle.WritingShouldUpdateWriteTime_Aft... 3 2 8 🟢 Investigated, no fix
98 #121157 System.Net.WebSockets.Client.Tests: Assertion failed: !_hasWaiter 2 - 7 🟢 Investigated, no fix
99 #119763 [QUIC] Sporadic long running tests 2 - 5 🟡 Investigated, no fix
100 #119299 [WASI][AOT] memory fault at wasm address 0x6c6f7314 in linear memory of size 0x3... 2 1 5 🟡 Investigated, no fix
101 #116719 [8.0] Timeout - Wasm.Build.Tests.WasmTemplateTests.RunWithDifferentAppBundleLoca... 2 2 1 🔴 Investigated, no fix
102 #114222 [8.0] GC Large array test failure 2 1 8 🟢 Investigated, no fix
103 #103347 [browser] HalfTests.ExplicitConversion_FromSingle failing due to NaN != NaN 2 - 9 🟢 Tests disabled (workaround)
104 #90458 [wasm] WBT SatelliteAssembliesTests.CheckThatSatelliteAssembliesAreNotAOTed fa... 2 2 6 🟡 Investigated, no fix
105 #125339 Fatal error during the build with System.Net.Http.HttpConnectionPool.ConnectAsyn... 1 - 6 🟡 Investigated, no fix
106 #124732 Timeout in System.Security.Cryptography.Tests.CryptoStreamTests.ReadWrite_Succes... 1 - 4 🟡 Uninvestigated (untriaged)
107 #122845 IndexOutOfRangeException in ILCompiler.LazyGenericsSupport.GraphBuilder.WalkMeth... 1 1 7 🟢 Uninvestigated (untriaged)
108 #122617 AggregateException (SkipTestException + NullReferenceException) in DebuggerTypeP... 1 - 5 🟡 Uninvestigated
109 #122522 HttpMetricsTest_Http20.TimeInQueue_RecordedForNewConnectionsOnly test failure 1 1 10 🟢 Investigated, no fix
110 #121983 [mono][osx] Swift-interop runtime tests crash/time-out after finishing 1 1 6 🟡 Tests disabled (workaround)
111 #121404 [mono] Assertion at jit-info.c:918, condition '!ji->async' 1 1 4 🟡 Investigated, no fix
112 #121134 Helix workitem Workloads-ST-Wasm.Build.NativeRebuild.Tests.FlagsChangeRebuildTes... 1 1 6 🟡 Investigated, no fix
113 #120836 Crash in WKS::gc_heap::background_promote (x86, segments) 1 1 5 🟡 Investigated, no fix
114 #119545 Microsoft.Extensions.Hosting.Tests.ConsoleLifetimeExitTests.EnsureEnvironmentExi... 1 1 8 🟢 Active PR (#119891)
115 #117964 [wasm] System.Net.WebSockets.Client.Tests.InvokerCloseTest.CloseOutputAsync_Clie... 1 1 9 🟢 Investigated, no fix
116 #117731 TimeZoneInfoTests.NoBackwardTimeZones tests are failing on Android 1 1 9 🟢 Tests disabled (workaround)
117 #117186 System.Text.Json.Tests fails with GC hole assert 1 1 7 🟢 Investigated, no fix
118 #114908 [Apple mobile][mono] GitHub_23791 runtime test crash in AOT-interpreter mode 1 1 5 🟡 Investigated, no fix
119 #114693 [9.0-staging] Unable to open dump json file 1 - 3 🔴 Investigated, no fix
120 #112195 OSX failure on StringTests.StartsWithNoMatch_StringComparison 1 - 9 🟢 Tests disabled (workaround)
121 #104723 Microsoft.Gen.OptionsValidation.Unit.Test.EmitterTests.ProduceDiagnosticFromOthe... 1 1 6 🟡 Investigated, no fix
122 #103449 SslStreamTlsResumeTests.ClientDisableTlsResume_Succeeds failed in CI 1 - 5 🟡 Tests disabled (workaround)
123 #103435 [8.0] "InvalidOperationException: Category does not exist" failure in net48 win ... 1 - 8 🟢 Investigated, no fix
124 #98193 [7.0] Could not find a part of the path in System.IO.Tests.FileSystemWatcherTest... 1 1 9 🟢 Active recent PR (#125915)
125 #90019 Crash in Microsoft.Extensions.Logging.Generators.Roslyn4.0.Tests.WorkItemExecuti... 1 - 5 🟡 Investigated, no fix
126 #89402 [wasm][AOT][net8.0] emcc : error - received SIGKILL (-9) 1 1 2 🔴 Investigated, no fix
127 #83659 Test failure WindowsAlternateDataStreamOverwrite 1 - 8 🟢 Investigated, no fix
128 #29683 STATUS_UNSUCCESSFUL in RsaCryptRoundtrip_OaepSHA1 1 - 4 🟡 Tracking external issue
129 #125905 X509FilesystemTests.CrlDiskCacheRecovers fails with Unable to read data from th... N/A - 8 🟢 Uninvestigated (untriaged)
130 #125803 MultiThreadedGetExportsWorkWithImportingConstructor failed with NullReferenceExc... N/A - 7 🟢 Investigated, no fix
131 #124487 [FAIL] System.Net.Http.Functional.Tests.SocketsHttpHandler_HttpClientHandlerTest... N/A - 9 🟢 Investigated, no fix
132 #124422 System.Security.Cryptography.X509Certificates.Tests.X509FilesystemTests.CrlDiskC... N/A - 6 🟡 Uninvestigated (untriaged)
133 #124210 OverlappingExtensions_AllMatchTypes_Comprehensive failed in CI N/A - 5 🟡 Uninvestigated (untriaged)
134 #123982 Test Failure: readytorun/GenericCycleDetection/Depth1Test/Depth1Test.cmd N/A - 2 🔴 Investigated, no fix
135 #123490 [GC tests] Consistency check failed: AV in clr at this callstack N/A - 6 🟡 Uninvestigated (untriaged)
136 #123035 [Assert] System.Collections.Concurrent.Tests on Alpine 3.23 x64 N/A - 2 🔴 Investigated, no fix
137 #123013 System.Text.Json.SourceGeneration.Roslyn4.4.Unit.Tests OOM on linux-arm64 N/A - 5 🟡 Investigated, no fix
138 #122979 [8.0] tracing/eventpipe/providervalidation/providervalidation/providervalidation... N/A - 5 🟡 Investigated, no fix
139 #122709 Build failures: macOS-13 based runner images are now retired N/A - 1 🔴 Investigated, no fix
140 #122671 [infra] npm error code ECONNRESET N/A - 1 🔴 Investigated, no fix
141 #122345 FAILED: exception_handling/pal_sxs/test1/paltest_pal_sxs_test1. Exit code: 137 i... N/A - 6 🟡 Investigated, no fix
142 #121940 [release/10.0] Assert Interop.Sys.LSeek(this, 0, Interop.Sys.SeekWhence.SEEK_CUR... N/A - 6 🟡 Investigated, no fix
143 #121873 System.Threading.Channels.Tests execution timed out N/A - 4 🟡 Uninvestigated (untriaged)
144 #119948 ExtendedLayoutTypes.dll fails to aot compile on mono N/A - 5 🟡 Tests disabled (workaround)
145 #119520 System.Net.WebSockets.Client.Tests android fails N/A - 7 🟢 Investigated, no fix
146 #119470 Crash during RunWithDifferentAppBundleLocations N/A - 5 🟡 Investigated, no fix
147 #119337 EmccCompile task fails with This object is no longer valid because the MetadataL... N/A - 5 🟡 Investigated, no fix
148 #119205 [wasm][AOT] error : Could not allocate XXX bytes N/A - 3 🔴 Uninvestigated
149 #118789 threading_group1 time out N/A - 1 🔴 Investigated, no fix
150 #118119 [ios] net.dot.iOS.Simulator.LibraryMode.Test test crash during runtime initializ... N/A - 1 🔴 Tests disabled (workaround)
151 #118038 gc.cpp assert during the nativeaot.SmokeTests runs N/A - 5 🟡 Investigated, no fix
152 #117666 LibraryImportGenerator test get killed on Ubuntu N/A - 5 🟡 Investigated, no fix
153 #117591 Test failure: JIT/SIMD/Vector3Interop_ro/Vector3Interop_ro.cmd N/A - 6 🟡 Investigated, no fix
154 #117561 JIT/Methodical/tailcall/deep_gc_d failing with assert `dwILOffsetWalk == dwILO... N/A - 5 🟡 Tests disabled (workaround)
155 #116760 [8.0] TestRevocationWithNoNextUpdate_NotRevoked - System.Security.Cryptography.X... N/A - 8 🟢 Investigated, no fix
156 #116558 iOS.Device/Simulator.LibraryMode.Test: failed to determine exit code - RETURN_CO... N/A - 1 🔴 Tests disabled (workaround)
157 #116393 Interop/COM/NativeClients/Dispatch test failure: 0x80131516 = dispatchCoerceTest... N/A - 6 🟡 Investigated, no fix
158 #116368 [wasm][release/9.0] Test SteppingIntoLibrarySymbolsLoadedFromSymbolServerAddOthe... N/A - 4 🟡 Investigated, no fix
159 #115467 [Test failure] ClientAsyncAuthenticate_ConnectionInfoInCallback_DoesNotThrow on ... N/A - 6 🟡 Tests disabled (workaround)
160 #114704 Timeout in HostFactoryResolverTests.NoSpecialEntryPointPatternCanRunInParallel N/A - 4 🟡 Investigated, no fix
161 #114287 SIGKILL System.Runtime.Serialization.Formatters.Tests N/A - 2 🔴 Investigated, no fix
162 #113686 [Long Running Test] 'System.Composition.UnitTests.ConcurrencyTests.SharedInstanc... N/A - 5 🟡 Investigated, no fix
163 #112423 [9.0][source-build] Could not find BROTLIDEC using the following names: brotlide... N/A - 1 🔴 Investigated, no fix
164 #112422 [9.0] Native crash in System.Data.Odbc tests in linux x64 mono N/A - 5 🟡 Investigated, no fix
165 #111431 [9.0] Process test expecting sleep but shows .NET long running process N/A - 8 🟢 Active recent PR (#125918)
166 #110952 [Mono/linux-arm64] int32_t CryptoNative_EvpPKeyBits(EVP_PKEY *): Assertion `pkey... N/A - 5 🟡 Investigated, no fix
167 #110643 System.Diagnostics.Process.Tests failure on net10.0-linux-Debug-arm64-Mono_Minij... N/A - 6 🟡 Investigated, no fix
168 #109565 [8.0] Assert contains failure, not found "Stopping after AOT" in Wasm.Build.Test... N/A - 2 🔴 Investigated, no fix
169 #107933 [9.0][osx] Access to path denied, bad file descriptor IOException in System.Diag... N/A - 7 🟢 Uninvestigated
170 #106634 [Test Failure] NoCallback_RevokedCertificate_NoRevocationChecking_Succeeds on Al... N/A - 5 🟡 Tests disabled (workaround)
171 #106088 Analyzer 'Microsoft.NetCore.CSharp.Analyzers.Performance.CSharpConstantExpectedA... N/A - 1 🔴 Investigated, no fix
172 #106071 [mono] FullAOT build asserts at `class1 != ARG_CLASS_NO_CLASS' for EmptyStructs... N/A - 3 🔴 Tests disabled (workaround)
173 #105265 Hang in FileShareOpen_Inheritable N/A - 7 🟢 Investigated, no fix
174 #105124 Test failure: System.Transactions.Tests.TransactionManagerTest.DefaultTimeout_Ma... N/A - 3 🔴 Investigated, no fix
175 #104933 [6.0] Internal exception in System.Security.Cryptography.Dsa.Tests.DsaSpanSignat... N/A - 7 🟢 Uninvestigated
176 #104889 [browser][MT] ReleaseJSOwnedObjectByGCHandle: Unexpected synchronous failure N/A - 5 🟡 Investigated, no fix
177 #104827 [8.0][browser][wasm] emcc failure to compile aot-instances N/A - 1 🔴 Investigated, no fix
178 #104823 [6.0] Microsoft.Extensions.FileProviders.Physical.Tests failing to access a syml... N/A - 10 🟢 Uninvestigated
179 #104586 [outerloop] System.Numerics.Tests.ToStringTest.ToString_ValidLargeFormat falin... N/A - 7 🟢 Investigated, no fix
180 #104572 [8.0] Failure in `System.Diagnostics.Tests.PerformanceCounterTests.PerformanceCo... N/A - 8 🟢 Investigated, no fix
181 #104333 runtime-community: Failure to build System.Security.Cryptography.Native/openssls... N/A - 1 🔴 Investigated, no fix
182 #104271 [wasm][mt] mono_wasm_load_runtime () failed RuntimeError: index out of bounds N/A - 5 🟡 Tests disabled (workaround)
183 #103520 [Mono AOT] Failed to compile System.Private.CoreLib.dll.bc N/A - 5 🟡 Investigated, no fix
184 #102150 [mono] [aot] Mono mini and LLVM fullAOT CI jobs are failing due to Failed to loa... N/A - 5 🟡 Tests disabled (workaround)
185 #101096 GetLoadLevel() postcondition failure N/A - 5 🟡 Investigated, no fix
186 #100088 System.Net.Tests.HttpListenerRequestTests fail with SocketException : Connection... N/A - 9 🟢 Investigated, no fix
187 #99423 [8.0][wasm] Exit code 137 returned from docker process after executing container... N/A - 2 🔴 Investigated, no fix
188 #96879 [6.0] Test failure in System.Text.Json.Tests.Utf8JsonWriterTests.Writing3MBBase6... N/A - 9 🟢 Uninvestigated
189 #95160 [8.0] [wasm] [AOT] HTTP Error 500.30 - ASP.NET Core app failed to start N/A - 1 🔴 Uninvestigated
190 #93321 Test failure: AggregateException: Not all processes in process tree could be ter... N/A - 8 🟢 Active recent PR (#125916)
191 #92420 [8.0] coreclr test failure: readytorun_GenericCycleDetection._Depth3Test_Depth3T... N/A - 8 🟢 Uninvestigated
192 #91987 The system cannot open the device or file specified 'NuGet-Migrations' N/A - 3 🔴 Active PR (#125524)
193 #90803 Address race in PerformanceCounterLib N/A - 7 🟢 Investigated, no fix
194 #88272 OOM on System.Text.Json.Tests.Utf8JsonWriterTests.WriteRawLargeJsonToStreamWith... N/A - 7 🟢 Tests disabled (workaround)
195 #81383 [6.0] GC test failures: Handle collector count overflows or underflows N/A - 8 🟢 Investigated, no fix
196 #75417 System.Diagnostics.Tests.InstanceDataTests.InstanceDataCollectionCollection test... N/A - 6 🟡 Uninvestigated
197 #69101 `System.IO.Pipes.Tests.NamedPipeTest_Specific.ClientConnectAsync_Cancel_With_Inf... N/A - 7 🟢 Tests disabled (workaround)
198 #53420 Compiler crashes when failing to release Mutex N/A - 5 🟡 Investigated, no fix
199 #48070 Build on Windows Fails sometimes with fatal error C1090: PDB API call failed N/A - 1 🔴 Investigated, no fix
200 #35066 DataContractSerializerTests.DCS_MyPersonSurrogate_Stress failing in CI N/A - 9 🟢 Investigated, no fix
201 #29383 Test Failure: System.Diagnostics.Tests.ProcessTests/LongProcessNamesAreSupported N/A - 9 🟢 Investigated, no fix

High-Value Copilot Targets

Issues with score >= 6 and no active PR, sorted by build impact:

Issue Builds (Month) Score Status Title
#122222 94 6 Investigated, no fix Test_WPF_3226 runtime test fails in mono fullaotllvm mode
#121518 67 6 Investigated, no fix Android WebSocket failure
#123957 57 6 Uninvestigated (untriaged) Native abort (SIGABRT, exit 134) in JIT/SIMD/Vector3Interop_r on Linux
#125150 44 6 Investigated, no fix SIGABRT in System.Net.Http.Functional.Tests on macOS 14
#112093 34 6 Investigated, no fix [linux_x64_minifullaot/llvmfullaot] class loader exception type assert
#113060 31 6 Investigated, no fix [Mono] Runtime test "test76531" fails in the LLVM (and mini) Full AOT
#112946 26 7 Investigated, no fix [Android] System.Tests.RandomTests.Next_IntInt_Next_IntInt_AllValuesAr
#111449 22 9 Investigated, no fix JSImportTest.BadCast test failure
#119023 15 8 Investigated, no fix Android System.Security.Cryptography test failure: Signing key verifi
#110857 12 9 Investigated, no fix [release/8.0-staging][android] CI failures in `System.Security.Cryptog
#125825 11 6 Uninvestigated Assertion failure in ConnectAsync_WithBuffer_Succeeds on Android/MacCa
#108832 11 6 Tests disabled (workaround) [Apple-mobile] `System.Tests.StringTests.[Starts,Ends]WithNoMatch_Stri
#83422 10 8 Investigated, no fix [6.0] Android test failure: Failed to install mobile app
#122493 9 10 Uninvestigated SocketException 'Connection reset by peer' causing test failures on an
#104825 9 8 Investigated, no fix [browser][wasm] Failed trying to read log messages via selenium: OpenQ
#120176 8 6 Investigated, no fix [wasm/browser] Failed to connect to socket /run/dbus/system_bus_socket
#118906 8 6 Investigated, no fix 8.0: Http2_IncorrectServerPreface_RequestFailsWithAppropriateHttpProto
#104671 7 6 Investigated, no fix GC/Regressions/v2.0-beta2/452950 test failure
#82837 6 8 Tests disabled (workaround) System.Security.Cryptography.X509Certificates.Tests.ChainTests.BuildIn
#117520 5 6 Investigated, no fix BasicEventSourceTests.TestsManifestGeneration.Test_EventSource_EtwMani
#123797 4 10 Investigated, no fix Assert.Equal failure in SocketAsyncEventArgsTest.Connect_Parallel_Fail
#117903 4 6 Investigated, no fix [release/8.0] TimeZoneInfoTests.Platform_TimeZoneNames failing on Andr
#111752 4 6 Investigated, no fix [8.0] JIT regression: DevDiv_255294.sh assert failed
#107364 4 9 Investigated, no fix [9.0] Test assert failure in X509Certificates.Tests.RevocationTests.Ai
#103586 4 6 Uninvestigated (untriaged) System.IO.Pipelines.Tests.PipeWriterTests.CompleteWithLargeWriteThrows
#76140 4 6 Tests disabled (workaround) 3 System.Diagnostics tests failing - System.FormatException : The inpu
#119746 3 6 Investigated, no fix System.Xml.CharCheckingReaderTests fails with OutOfMemoryException
#97020 3 8 Investigated, no fix System.IO.Tests.File_GetSetTimes_SafeFileHandle.WritingShouldUpdateWri
#121157 2 7 Investigated, no fix System.Net.WebSockets.Client.Tests: Assertion failed: !_hasWaiter
#114222 2 8 Investigated, no fix [8.0] GC Large array test failure
#103347 2 9 Tests disabled (workaround) [browser] HalfTests.ExplicitConversion_FromSingle failing due to NaN !
#90458 2 6 Investigated, no fix [wasm] WBT `SatelliteAssembliesTests.CheckThatSatelliteAssembliesAreNo
#125339 1 6 Investigated, no fix Fatal error during the build with System.Net.Http.HttpConnectionPool.C
#122845 1 7 Uninvestigated (untriaged) IndexOutOfRangeException in ILCompiler.LazyGenericsSupport.GraphBuilde
#122522 1 10 Investigated, no fix HttpMetricsTest_Http20.TimeInQueue_RecordedForNewConnectionsOnly test
#121983 1 6 Tests disabled (workaround) [mono][osx] Swift-interop runtime tests crash/time-out after finishin
#121134 1 6 Investigated, no fix Helix workitem Workloads-ST-Wasm.Build.NativeRebuild.Tests.FlagsChange
#117964 1 9 Investigated, no fix [wasm] System.Net.WebSockets.Client.Tests.InvokerCloseTest.CloseOutput
#117731 1 9 Tests disabled (workaround) TimeZoneInfoTests.NoBackwardTimeZones tests are failing on Android
#117186 1 7 Investigated, no fix System.Text.Json.Tests fails with GC hole assert
#112195 1 9 Tests disabled (workaround) OSX failure on StringTests.StartsWithNoMatch_StringComparison
#104723 1 6 Investigated, no fix Microsoft.Gen.OptionsValidation.Unit.Test.EmitterTests.ProduceDiagnost
#103435 1 8 Investigated, no fix [8.0] "InvalidOperationException: Category does not exist" failure in
#83659 1 8 Investigated, no fix Test failure WindowsAlternateDataStreamOverwrite
Raw
buildanalysis.csv
number title best_count monthly weekly daily copilot_score status labels created updated
123216 MsQuic fails with QUIC_STATUS_OUT_OF_MEMORY on AzureLinux 520 520 330 2 1 Tests disabled (workaround) disabled-test;tracking-external-issue;blocking-clean-ci-optional;area-System.Net.Quic;Known Build Error
124526 [android][clr] No peer certificates when executing System.Net.Http.Functional.Tests on Android emulator 493 493 428 72 3 Active recent PR (#125481) area-System.Net.Http;disabled-test;arch-x64;blocking-clean-ci;os-android;Known Build Error
123796 XHarness package install failure on iOS due to devicectl NSPOSIXErrorDomain error 49 372 372 220 0 1 Investigated, no fix test-failure;arch-arm64;area-Infrastructure-mono;os-ios;os-tvos;Known Build Error
125107 AOT precompile failed on ios-arm64: 'No space left on device' (exit code 1) 211 211 80 0 1 Uninvestigated arch-arm64;area-Infrastructure-mono;os-ios;Known Build Error
108299 Wasm build terminated with exit code 137 183 183 0 0 1 Investigated, no fix arch-wasm;os-linux;blocking-clean-ci;area-Infrastructure;runtime-mono;Known Build Error;os-browser
125135 [8.0] System.Exception: Failed to list devices - tvOS, iOS 177 177 21 0 1 Investigated, no fix blocking-clean-ci;area-Infrastructure;os-ios;os-tvos;Known Build Error
119665 [Test][iOS] iOS.Device.Aot.Test fails with APP_LAUNCH_FAILURE 168 168 44 0 1 Investigated, no fix blocking-clean-ci;area-Infrastructure;os-ios;Known Build Error
117164 Unable to pull image from mcr.microsoft.com 145 145 23 5 1 Investigated, no fix blocking-clean-ci;area-Infrastructure;Known Build Error
112633 [android] Android.Device_Emulator.JIT.Test failing on emulators with CoreCLR 125 125 13 1 1 Investigated, no fix os-android;area-Infrastructure-mono;Known Build Error
120526 [android][arm64] System.Net.Sockets.Tests.SendTo_SyncForceNonBlocking.Datagram_UDP_ShouldImplicitlyBindLocalEndpoint fai 124 124 30 1 10 Active PR, not recent (#122556) arch-arm64;area-System.Net.Sockets;os-android;Known Build Error
103630 System.IO.Tests.Directory_Create_Tests.FileSystemWatcher_Directory_Create_InNestedDirectory fails with "Created event di 119 119 29 0 9 Active recent PR (#125818) area-System.IO;disabled-test;os-windows;Known Build Error
125371 XHarness device enumeration failure for tvos-device (exit code 71 GENERAL_FAILURE) 104 104 21 0 1 Uninvestigated arch-arm64;area-Infrastructure-mono;os-tvos;Known Build Error
118603 [Android][CoreCLR] System.Security.Cryptography.Tests killed by lowmemorykiller 104 104 27 4 2 Investigated, no fix os-android;area-VM-meta-mono;Known Build Error
124462 baseservices failing for coreclr runtime-extra-platforms testing with "Process mlaunch exited with 1" 96 96 16 0 1 Uninvestigated (untriaged) area-Infrastructure-coreclr;untriaged;blocking-clean-ci-optional;Known Build Error;needs-area-label
122222 Test_WPF_3226 runtime test fails in mono fullaotllvm mode 94 94 8 1 6 Investigated, no fix area-Codegen-AOT-mono;Known Build Error
110173 Test failure: baseservices/exceptions/stackoverflow/stackoverflowtester/stackoverflowtester.cmd 94 94 1 0 2 Tests disabled (workaround) disabled-test;os-linux;arch-x64;area-ExceptionHandling-coreclr;blocking-clean-ci;blocking-clean-ci-optional;blocking-outerloop;Known Build Error
125440 Android arm32 device not found (armeabi-v7a architecture unavailable) 93 93 68 8 1 Uninvestigated (untriaged) test-failure;os-android;untriaged;area-Infrastructure-mono;Known Build Error
117017 wasm build failure in CI 78 78 76 0 1 Investigated, no fix blocking-clean-ci;area-Infrastructure-mono;wasm-aot-test;Known Build Error
108103 iOS tests failing with WORKLOAD TIMED OUT - Killing user command. 72 72 1 0 1 Investigated, no fix blocking-clean-ci;area-VM-meta-mono;os-ios;Known Build Error
121518 Android WebSocket failure 67 67 4 0 6 Investigated, no fix area-System.Net;blocking-clean-ci;os-android;Known Build Error
123957 Native abort (SIGABRT, exit 134) in JIT/SIMD/Vector3Interop_r on Linux x64 57 57 13 1 6 Uninvestigated (untriaged) test-failure;os-linux;arch-x64;untriaged;area-Codegen-AOT-mono;Known Build Error
104588 [outerloop] System.Runtime.Numerics.Tests crash with exit code 137 in linux debug coreclr 56 56 14 2 2 Investigated, no fix area-System.Numerics;blocking-outerloop;Known Build Error
101700 [8.0] Test failure in System.Diagnostics.Tests.ProcessTests.MainWindowHandle_GetWithGui_ShouldRefresh_Windows 56 56 14 2 9 Active recent PR (#125907) area-System.Diagnostics.Process;Known Build Error
98964 [outerloop] System.Runtime.Tests crash with exit code 137 in linux debug coreclr 56 56 14 2 2 Investigated, no fix area-System.Runtime;os-linux;arch-x64;blocking-clean-ci;runtime-coreclr;os-linux-musl;Known Build Error
117486 [wasm] OpenQA.Selenium.WebDriverTimeoutException: timeout: Timed out receiving message from renderer 55 55 22 1 2 Investigated, no fix arch-wasm;area-System.Text.Encoding;blocking-clean-ci;Known Build Error
114450 [macOS] SendTo_.*.Datagram_UDP_AccessDenied_Throws_DoesNotBind cannot reach host 55 55 33 7 6 Active PR, not recent (#122556) area-System.Net.Sockets;disabled-test;os-maccatalyst;Known Build Error
117974 browser-wasm linux Release LibraryTests queues timing out 47 47 13 0 5 Investigated, no fix arch-wasm;blocking-clean-ci;area-VM-meta-mono;Known Build Error;os-browser
125150 SIGABRT in System.Net.Http.Functional.Tests on macOS 14 44 44 14 0 6 Investigated, no fix area-System.Net.Http;os-mac-os-x;blocking-clean-ci;Known Build Error
125522 [8.0] Failed to find a suitable device for target tvos-device 42 42 32 0 1 Uninvestigated (untriaged) blocking-clean-ci;untriaged;area-Infrastructure-mono;os-tvos;Known Build Error
125769 [Mono] mini-llvm.c build failure: LLVMMono1CallConv undeclared after LLVM SDK version bump to 26159.1 40 40 40 0 1 Investigated, no fix blocking-clean-ci;area-Build-mono;os-ios;Known Build Error
124751 DNS localhost subdomain tests with AddressFamily fail on Android 35 35 4 0 8 Active PR, not recent (#125478) area-System.Net;disabled-test;os-android;Known Build Error
112093 [linux_x64_minifullaot/llvmfullaot] class loader exception type assertion fails 34 34 22 4 6 Investigated, no fix area-Codegen-AOT-mono;Known Build Error
122494 Assertion failures: localhost resolves to non-loopback addresses on tvOS arm64 32 0 0 0 4 Uninvestigated test-failure;arch-arm64;area-Codegen-AOT-mono;os-tvos;Known Build Error
113060 [Mono] Runtime test "test76531" fails in the LLVM (and mini) Full AOT configuration on linux-x64 31 31 9 0 6 Investigated, no fix os-linux;arch-x64;area-Codegen-AOT-mono;Known Build Error
120606 CryptographicException in NonPowerOfTwoKeySizeOaepRoundtrip test 29 29 9 1 7 Active recent PR (#125911) area-System.Security;blocking-clean-ci;Known Build Error
96798 Error while retrieving client Settings for PipelineArtifact. HttpRequestException: nodename nor servname provided, or no 28 28 15 0 3 Uninvestigated arch-arm64;os-mac-os-x;area-Infrastructure;runtime-coreclr;Known Build Error
112946 [Android] System.Tests.RandomTests.Next_IntInt_Next_IntInt_AllValuesAreWithinRange failing on android-arm 26 26 13 2 7 Investigated, no fix arch-arm32;area-System.Runtime;os-android;Known Build Error
112557 [linux-x64] [mono-aot] Test `Runtime_101731.TestConvertToInt64NativeSingle(3.4028235E+38)` returns exit code 22 26 26 9 0 1 Investigated, no fix os-linux;blocking-clean-ci;area-Infrastructure-mono;Known Build Error
92290 MSBuild crashing in the build 26 26 7 0 1 Investigated, no fix blocking-clean-ci;area-Infrastructure;Known Build Error
103940 Test failure: System.IO.Tests.File_Move_Tests.File_Move_SynchronizingObject 25 25 9 0 8 Active recent PR (#125818) arch-arm64;area-System.IO;os-windows;JitStress;blocking-clean-ci-optional;Known Build Error
125776 iOS.CoreCLR.R2R.Test failure: Bad CPU type in executable 22 22 22 0 1 Uninvestigated (untriaged) area-Infrastructure-coreclr;blocking-clean-ci;untriaged;Known Build Error
111449 JSImportTest.BadCast test failure 22 22 22 20 9 Investigated, no fix arch-wasm;area-System.Runtime.InteropServices.JavaScript;Known Build Error;os-browser
105804 [NativeAOT-iOS] MacCatalyst fails to start/log `nativeaot.SmokeTests` tests 22 22 9 0 1 Investigated, no fix arch-arm64;area-Infrastructure-mono;os-maccatalyst;Known Build Error
121902 Cose.Tests.TestKeyRing.CreateECDsa fails with "OSStatus error -50" 21 21 6 0 6 Active PR (#125909) area-System.Security;blocking-clean-ci;untriaged;Known Build Error
124976 Build error: ilc exited with code 57005 19 19 4 1 1 Uninvestigated (untriaged) blocking-clean-ci;area-Infrastructure;untriaged;Known Build Error
125052 System.Reflection.Context assertion failures: MethodImplFlags=NoInlining and missing method locals (tvOS/arm64, Mono) 18 0 0 0 4 Uninvestigated test-failure;arch-arm64;area-System.Reflection;runtime-mono;os-tvos;Known Build Error
114653 [8.0][wasm] DefaultTemplate_AOT_InProjectFile test failure - aot-instances.dll precompiling failed with exit 137 18 18 4 0 4 Investigated, no fix os-linux;area-Build-mono;wasm-aot-test;Known Build Error;os-browser
125295 System.IO.Tests.Directory_Delete_MountVolume.RunTest failure 16 16 12 0 9 Active PR (#125625) area-System.IO;blocking-clean-ci;untriaged;Known Build Error
119023 Android System.Security.Cryptography test failure: Signing key verifies the CRL 15 15 5 0 8 Investigated, no fix area-System.Security;blocking-clean-ci;os-android;Known Build Error
100800 LibraryImportGenerator.Unit.Tests crashing on linux-x64 mono interpreter 13 13 1 0 5 Investigated, no fix blocking-clean-ci;area-Codegen-Interpreter-mono;Known Build Error
90605 tracing/runtimeeventsource/nativeruntimeeventsource/nativeruntimeeventsource failing in CI 13 13 2 0 5 Tests disabled (workaround) disabled-test;blocking-clean-ci;area-Tracing-mono;Known Build Error
110857 [release/8.0-staging][android] CI failures in `System.Security.Cryptography.X509Certificates.Tests.ChainTests.BuildChain 12 12 6 0 9 Investigated, no fix area-System.Security;os-android;Known Build Error
125825 Assertion failure in ConnectAsync_WithBuffer_Succeeds on Android/MacCatalyst/tvOS (Mono/CoreCLR/NativeAOT) 11 11 11 1 6 Uninvestigated test-failure;arch-arm64;arch-x86;area-System.Net.Sockets;arch-x64;os-android;os-tvos;os-maccatalyst;Known Build Error
125244 BlazorWasm_CannotAOT_InDebug test failure 11 11 0 0 9 Active PR (#336) blocking-clean-ci;untriaged;area-VM-meta-mono;Known Build Error
108832 [Apple-mobile] `System.Tests.StringTests.[Starts,Ends]WithNoMatch_StringComparison` test failure 11 11 6 0 6 Tests disabled (workaround) area-System.Globalization;disabled-test;os-ios;os-maccatalyst;Known Build Error
116697 [browser] Wasm.Build.Tests timeout - Timed out after 10s waiting for 'WASM EXIT' 10 10 2 1 4 Investigated, no fix arch-wasm;blocking-clean-ci;area-Build-mono;Known Build Error
104670 BinderTracingTest.ResolutionFlow times out 10 10 1 0 5 Investigated, no fix area-AssemblyLoader-coreclr;blocking-clean-ci;Known Build Error
83422 [6.0] Android test failure: Failed to install mobile app 10 10 4 0 8 Investigated, no fix arch-x64;os-android;area-VM-meta-mono;Known Build Error
125826 Bad CPU type in executable causing iOS device test failure (exit code 21) 9 9 9 0 1 Active PR (#125897) test-failure;arch-arm64;untriaged;area-Infrastructure-mono;os-ios;Known Build Error
122493 SocketException 'Connection reset by peer' causing test failures on android_arm64 and android_x64 9 0 0 0 10 Uninvestigated test-failure;arch-arm64;area-System.Net.Sockets;arch-x64;os-android;Known Build Error
117138 AF: *(_UNCHECKED_OBJECTREF *)handle == NULL (HndCreateHandle called by getJitHandleForObject) 9 9 3 1 5 Active PR (#125350) GCStress;area-CodeGen-coreclr;blocking-clean-ci;Known Build Error
109653 [wasm] error NETSDK1147: To build this project, the following workloads must be installed: wasm-tools 9 9 5 1 1 Investigated, no fix arch-wasm;area-Infrastructure-mono;in-pr;Known Build Error;os-wasi;os-browser
104825 [browser][wasm] Failed trying to read log messages via selenium: OpenQA.Selenium.WebDriverException: An unknown exceptio 9 9 4 1 8 Investigated, no fix arch-wasm;os-linux;blocking-clean-ci;area-VM-meta-mono;Known Build Error;os-browser
125233 BlazorWasm AOT not requiring trimming 8 8 0 0 5 Active PR (#336) untriaged;area-Build-mono;Known Build Error
123843 SystemTrustCertificateWithCustomRootTrust failure in CI 8 8 4 0 8 Active PR (#125910) area-System.Security;blocking-clean-ci;untriaged;Known Build Error
120176 [wasm/browser] Failed to connect to socket /run/dbus/system_bus_socket 8 8 8 4 6 Investigated, no fix arch-wasm;blocking-clean-ci;area-Build-mono;Known Build Error;os-browser
120116 runtime / Build / maccatalyst-x64 release MonoAOTOffsets / Build product failure 8 8 6 0 1 Uninvestigated (untriaged) area-Infrastructure;untriaged;Known Build Error
118906 8.0: Http2_IncorrectServerPreface_RequestFailsWithAppropriateHttpProtocolException failed 8 8 7 0 6 Investigated, no fix area-System.Net.Http;test-bug;Known Build Error
114924 Failed to install runtime_python_requirements 8 8 1 0 1 Investigated, no fix os-linux;area-Infrastructure;Known Build Error
103524 [browser] test failure: Tests timed out. Killing driver service 8 8 3 0 5 Investigated, no fix arch-wasm;area-VM-meta-mono;Known Build Error
114698 [8.0] Long running test timeout: Wasm.Build.Tests.TestAppScenarios.WasmAppBuilderDebugLevelTests.BuildWithExplicitValue 7 7 1 0 1 Investigated, no fix arch-wasm;os-linux;area-Infrastructure-mono;Known Build Error;os-browser
104671 GC/Regressions/v2.0-beta2/452950 test failure 7 7 1 0 6 Investigated, no fix area-GC-mono;Known Build Error
125018 System.IO.Tests.File_Move_Tests.File_Move_Multiple_From_Watched_To_Unwatched_Mac test failure 6 6 1 0 10 Active recent PR (#125818) area-System.IO;blocking-clean-ci;untriaged;Known Build Error
122874 iOS.Device test WorkItemExecutions 6 6 6 6 1 Investigated, no fix blocking-clean-ci;area-Infrastructure-mono;os-ios;Known Build Error
117546 WasmAppBuilderDebugLevelTests timeout failure 6 6 2 0 5 Investigated, no fix area-Build-mono;Known Build Error
101423 System.IO.FileSystem.Tests.WorkItemExecution CI timeout on net9.0-osx-Debug-x64-Mono_Minijit_Debug-OSX.1200.Amd64.Open 6 6 1 0 1 Investigated, no fix area-Infrastructure-mono;Known Build Error
82837 System.Security.Cryptography.X509Certificates.Tests.ChainTests.BuildInvalidSignatureTwice failure 6 6 4 0 8 Tests disabled (workaround) area-System.Security;disabled-test;runtime-mono;Known Build Error
123572 [Wasm] The request was canceled due to the configured HttpClient.Timeout of 100 seconds elapsing 5 5 0 0 5 Investigated, no fix arch-wasm;area-System.Net.Http;Known Build Error
123396 APP_CRASH SIGABRT during coreclr_initialize on tvOS device (vm_map_enter allocation failure) 5 5 5 5 1 Investigated, no fix test-failure;arch-arm64;area-VM-coreclr;os-tvos;Known Build Error
117520 BasicEventSourceTests.TestsManifestGeneration.Test_EventSource_EtwManifestGeneration is failing in CI 5 5 1 0 6 Investigated, no fix area-System.Diagnostics.Tracing;blocking-clean-ci;Known Build Error
76488 Intermittent build failure in AfterSourceBuild: "Could not write state file" 5 5 2 0 1 Uninvestigated area-Infrastructure;Known Build Error
125624 Directory_ReparsePoints_MountVolume test failures 4 4 4 0 6 Active PR (#125625) area-System.IO;blocking-clean-ci;untriaged;Known Build Error
123797 Assert.Equal failure in SocketAsyncEventArgsTest.Connect_Parallel_FailsOver (got 127.0.0.1:59851) 4 4 4 0 10 Investigated, no fix test-failure;arch-arm64;area-System.Net.Sockets;os-tvos;Known Build Error
122669 [mono] mono_thread_info_install_interrupt: previous_token should be INTERRUPT_STATE 4 4 3 0 5 Investigated, no fix blocking-clean-ci;untriaged;area-VM-threading-mono;Known Build Error
120245 [wasm AOT] error : LLVM ERROR: out of memory 4 4 4 4 1 Investigated, no fix arch-wasm;area-Infrastructure-mono;Known Build Error
119140 Assertion failed: CREATE_CHECK_STRING(bSmallObjectHeapPtr || bLargeObjectHeapPtr) 4 4 0 0 5 Investigated, no fix area-GC-coreclr;blocking-clean-ci;Known Build Error
117903 [release/8.0] TimeZoneInfoTests.Platform_TimeZoneNames failing on Android 4 4 3 0 6 Investigated, no fix os-android;Known Build Error;area-System.DateTime
112360 System.Data.OleDb.Tests crash with exit code -1073740771 4 4 1 0 5 Investigated, no fix area-System.Data.OleDB;Known Build Error
111752 [8.0] JIT regression: DevDiv_255294.sh assert failed 4 4 2 0 6 Investigated, no fix os-linux;arch-x64;area-crossgen2-coreclr;blocking-clean-ci;JitUntriaged;Known Build Error
107364 [9.0] Test assert failure in X509Certificates.Tests.RevocationTests.AiaTests.AiaAcceptsCertTypesAndIgnoresNonCertTypes 4 4 0 0 9 Investigated, no fix area-System.Security;os-mac-os-x;arch-x64;runtime-mono;Known Build Error
103586 System.IO.Pipelines.Tests.PipeWriterTests.CompleteWithLargeWriteThrows fails in CI 4 4 1 0 6 Uninvestigated (untriaged) area-System.IO.Pipelines;untriaged;Known Build Error
96968 Test failure BasicEventSourceTests.TestsUserErrors.Test_BadEventSource_MismatchedIds_WithEtwListener 4 4 2 1 8 Active PR (#125908) area-System.Diagnostics.Tracing;os-windows;blocking-clean-ci-optional;in-pr;Known Build Error
92148 AzDo uploading failure: "Blob is incomplete" 4 4 1 0 1 Investigated, no fix os-android;area-Infrastructure-mono;Known Build Error
88027 Test failure BasicEventSourceTests.TestsManifestGeneration.Test_EventSource_EtwManifestGenerationRollover 4 4 2 0 3 Investigated, no fix arch-x86;area-System.Diagnostics.Tracing;os-windows;runtime-coreclr;Known Build Error
76140 3 System.Diagnostics tests failing - System.FormatException : The input is not a valid Base-64 4 4 4 0 6 Tests disabled (workaround) area-System.Diagnostics.Process;disabled-test;os-android;Known Build Error
119746 System.Xml.CharCheckingReaderTests fails with OutOfMemoryException 3 3 0 0 6 Investigated, no fix area-System.Xml;Known Build Error
97020 System.IO.Tests.File_GetSetTimes_SafeFileHandle.WritingShouldUpdateWriteTime_After_SetLastAccessTime failing 3 3 2 1 8 Investigated, no fix area-System.IO;Known Build Error
121157 System.Net.WebSockets.Client.Tests: Assertion failed: !_hasWaiter 2 2 0 0 7 Investigated, no fix area-System.Net;Known Build Error
119763 [QUIC] Sporadic long running tests 2 2 0 0 5 Investigated, no fix area-System.Net.Quic;Known Build Error
119299 [WASI][AOT] memory fault at wasm address 0x6c6f7314 in linear memory of size 0x3200000 2 2 1 0 5 Investigated, no fix arch-wasm;area-Codegen-AOT-mono;Known Build Error;os-wasi
116719 [8.0] Timeout - Wasm.Build.Tests.WasmTemplateTests.RunWithDifferentAppBundleLocations 2 2 2 2 1 Investigated, no fix arch-wasm;area-Infrastructure-mono;Known Build Error
114222 [8.0] GC Large array test failure 2 2 1 0 8 Investigated, no fix os-linux;arch-x64;area-GC-coreclr;runtime-coreclr;Known Build Error
103347 [browser] HalfTests.ExplicitConversion_FromSingle failing due to NaN != NaN 2 2 0 0 9 Tests disabled (workaround) arch-wasm;area-System.Numerics;disabled-test;Known Build Error
90458 [wasm] WBT `SatelliteAssembliesTests.CheckThatSatelliteAssembliesAreNotAOTed` failing 2 2 2 0 6 Investigated, no fix test-failure;arch-wasm;area-Build-mono;Known Build Error
125339 Fatal error during the build with System.Net.Http.HttpConnectionPool.ConnectAsync on the callstack 1 1 0 0 6 Investigated, no fix bug;area-System.Net.Http;blocking-clean-ci;Known Build Error
124732 Timeout in System.Security.Cryptography.Tests.CryptoStreamTests.ReadWrite_Success 1 1 0 0 4 Uninvestigated (untriaged) area-System.Security;blocking-clean-ci;untriaged;Known Build Error
122845 IndexOutOfRangeException in ILCompiler.LazyGenericsSupport.GraphBuilder.WalkMethod 1 1 1 0 7 Uninvestigated (untriaged) blocking-clean-ci;untriaged;area-NativeAOT-coreclr;Known Build Error
122617 AggregateException (SkipTestException + NullReferenceException) in DebuggerTypeProxy tests on android_x64 1 1 0 0 5 Uninvestigated test-failure;arch-x64;os-android;area-NativeAOT-coreclr;Known Build Error
122522 HttpMetricsTest_Http20.TimeInQueue_RecordedForNewConnectionsOnly test failure 1 1 1 0 10 Investigated, no fix area-System.Net.Http;test-bug;Known Build Error
121983 [mono][osx] Swift-interop runtime tests crash/time-out after finishing 1 1 1 1 6 Tests disabled (workaround) disabled-test;os-mac-os-x;arch-x64;untriaged;area-Codegen-JIT-mono;Known Build Error
121404 [mono] Assertion at jit-info.c:918, condition '!ji->async' 1 1 1 1 4 Investigated, no fix area-Codegen-AOT-mono;Known Build Error
121134 Helix workitem Workloads-ST-Wasm.Build.NativeRebuild.Tests.FlagsChangeRebuildTests failed with status BadExit 1 1 1 0 6 Investigated, no fix arch-wasm;untriaged;area-Build-mono;Known Build Error
120836 Crash in WKS::gc_heap::background_promote (x86, segments) 1 1 1 0 5 Investigated, no fix tenet-reliability;area-GC-coreclr;Known Build Error
119545 Microsoft.Extensions.Hosting.Tests.ConsoleLifetimeExitTests.EnsureEnvironmentExitDoesntHang fails on .NET Framework 1 1 1 1 8 Active PR (#119891) blocking-clean-ci;area-Extensions-Hosting;Known Build Error
117964 [wasm] System.Net.WebSockets.Client.Tests.InvokerCloseTest.CloseOutputAsync_ClientInitiated_CanReceive_CanClose failing 1 1 1 0 9 Investigated, no fix arch-wasm;area-System.Net;Known Build Error
117731 TimeZoneInfoTests.NoBackwardTimeZones tests are failing on Android 1 1 1 1 9 Tests disabled (workaround) disabled-test;os-android;Known Build Error;area-System.DateTime
117186 System.Text.Json.Tests fails with GC hole assert 1 1 1 0 7 Investigated, no fix area-GC-coreclr;blocking-clean-ci;Known Build Error
114908 [Apple mobile][mono] `GitHub_23791` runtime test crash in AOT-interpreter mode 1 1 1 0 5 Investigated, no fix arch-arm64;arch-x64;area-Codegen-Interpreter-mono;os-ios;os-tvos;Known Build Error
114693 [9.0-staging] Unable to open dump json file 1 1 0 0 3 Investigated, no fix arch-arm64;os-linux;area-Infrastructure-coreclr;Known Build Error
112195 OSX failure on StringTests.StartsWithNoMatch_StringComparison 1 1 0 0 9 Tests disabled (workaround) area-System.Globalization;disabled-test;os-ios;os-tvos;Known Build Error
104723 Microsoft.Gen.OptionsValidation.Unit.Test.EmitterTests.ProduceDiagnosticFromOtherAssemblyTest failed in CI 1 1 1 1 6 Investigated, no fix blocking-clean-ci;area-Extensions-Options;Known Build Error
103449 SslStreamTlsResumeTests.ClientDisableTlsResume_Succeeds failed in CI 1 1 0 0 5 Tests disabled (workaround) area-System.Net.Security;disabled-test;test-run-core;tracking-external-issue;Known Build Error
103435 [8.0] "InvalidOperationException: Category does not exist" failure in net48 win x86 in System.Diagnostics.Tests.Performa 1 1 0 0 8 Investigated, no fix arch-x86;os-windows;test-run-desktop;needs-further-triage;area-System.Diagnostics.PerformanceCounter;Known Build Error
98193 [7.0] Could not find a part of the path in System.IO.Tests.FileSystemWatcherTests.FileSystemWatcher_Directory_Delete_Mul 1 1 1 0 9 Active recent PR (#125915) arch-x86;area-System.IO;os-windows;runtime-coreclr;Known Build Error
90019 Crash in Microsoft.Extensions.Logging.Generators.Roslyn4.0.Tests.WorkItemExecution 1 1 0 0 5 Investigated, no fix area-VM-meta-mono;Known Build Error
89402 [wasm][AOT][net8.0] emcc : error - received SIGKILL (-9) 1 1 1 0 2 Investigated, no fix arch-wasm;area-Codegen-AOT-mono;wasm-aot-test;Known Build Error;os-browser
83659 Test failure WindowsAlternateDataStreamOverwrite 1 1 0 0 8 Investigated, no fix arch-arm64;area-System.IO;os-windows;Known Build Error
29683 STATUS_UNSUCCESSFUL in RsaCryptRoundtrip_OaepSHA1 1 1 0 0 4 Tracking external issue area-System.Security;tracking-external-issue;Known Build Error
125905 X509FilesystemTests.CrlDiskCacheRecovers fails with Unable to read data from the transport connection: Operation cancel 0 0 0 0 8 Uninvestigated (untriaged) area-System.Security;blocking-clean-ci;untriaged;Known Build Error
125803 MultiThreadedGetExportsWorkWithImportingConstructor failed with NullReferenceException 0 0 0 0 7 Investigated, no fix area-System.Composition;blocking-clean-ci;untriaged;Known Build Error
124487 [FAIL] System.Net.Http.Functional.Tests.SocketsHttpHandler_HttpClientHandlerTest.LargeUriAndHeaders_Works 0 0 0 0 9 Investigated, no fix area-System.Net.Http;blocking-clean-ci;os-android;Known Build Error
124422 System.Security.Cryptography.X509Certificates.Tests.X509FilesystemTests.CrlDiskCacheRecovers fails with System.Security. 0 0 0 0 6 Uninvestigated (untriaged) area-System.Security;untriaged;Known Build Error
124210 OverlappingExtensions_AllMatchTypes_Comprehensive failed in CI 0 0 0 0 5 Uninvestigated (untriaged) area-System.IO;untriaged;blocking-clean-ci-optional;Known Build Error
123982 Test Failure: readytorun/GenericCycleDetection/Depth1Test/Depth1Test.cmd 0 0 0 0 2 Investigated, no fix area-CodeGen-coreclr;Known Build Error
123490 [GC tests] Consistency check failed: AV in clr at this callstack 0 0 0 0 6 Uninvestigated (untriaged) area-GC-coreclr;untriaged;Known Build Error
123035 [Assert] System.Collections.Concurrent.Tests on Alpine 3.23 x64 0 0 0 0 2 Investigated, no fix area-System.Collections;os-alpine;Known Build Error
123013 System.Text.Json.SourceGeneration.Roslyn4.4.Unit.Tests OOM on linux-arm64 0 0 0 0 5 Investigated, no fix area-System.Text.Json;Known Build Error
122979 [8.0] tracing/eventpipe/providervalidation/providervalidation/providervalidation.sh [FAIL] 0 0 0 0 5 Investigated, no fix area-Tracing-coreclr;untriaged;Known Build Error
122709 Build failures: macOS-13 based runner images are now retired 0 0 0 0 1 Investigated, no fix area-Infrastructure;Known Build Error
122671 [infra] npm error code ECONNRESET 0 0 0 0 1 Investigated, no fix area-Infrastructure;Known Build Error;os-browser
122345 FAILED: exception_handling/pal_sxs/test1/paltest_pal_sxs_test1. Exit code: 137 in outerloop 0 0 0 0 6 Investigated, no fix area-PAL-coreclr;Known Build Error
121940 [release/10.0] Assert Interop.Sys.LSeek(this, 0, Interop.Sys.SeekWhence.SEEK_CUR) >= 0 in System.Net.XXX tests 0 0 0 0 6 Investigated, no fix area-System.Net;Known Build Error
121873 System.Threading.Channels.Tests execution timed out 0 0 0 0 4 Uninvestigated (untriaged) area-System.Threading.Channels;untriaged;Known Build Error
119948 ExtendedLayoutTypes.dll fails to aot compile on mono 0 0 0 0 5 Tests disabled (workaround) disabled-test;untriaged;area-Codegen-AOT-mono;Known Build Error
119520 System.Net.WebSockets.Client.Tests android fails 0 0 0 0 7 Investigated, no fix area-System.Net;os-android;Known Build Error
119470 Crash during RunWithDifferentAppBundleLocations 0 0 0 0 5 Investigated, no fix arch-wasm;Known Build Error;area-Workloads
119337 EmccCompile task fails with This object is no longer valid because the MetadataLoadContext that created it has been disp 0 0 0 0 5 Investigated, no fix arch-wasm;area-Build-mono;Known Build Error
119205 [wasm][AOT] error : Could not allocate XXX bytes 0 0 0 0 3 Uninvestigated arch-wasm;area-Codegen-AOT-mono;Known Build Error;os-browser
118789 threading_group1 time out 0 0 0 0 1 Investigated, no fix area-Infrastructure-coreclr;untriaged;Known Build Error
118119 [ios] net.dot.iOS.Simulator.LibraryMode.Test test crash during runtime initialization 0 0 0 0 1 Tests disabled (workaround) disabled-test;area-Infrastructure-mono;os-ios;Known Build Error
118038 gc.cpp assert during the nativeaot.SmokeTests runs 0 0 0 0 5 Investigated, no fix area-GC-coreclr;Known Build Error
117666 LibraryImportGenerator test get killed on Ubuntu 0 0 0 0 5 Investigated, no fix area-Interop-coreclr;Known Build Error
117591 Test failure: JIT/SIMD/Vector3Interop_ro/Vector3Interop_ro.cmd 0 0 0 0 6 Investigated, no fix arch-arm64;os-mac-os-x;GCStress;area-CodeGen-coreclr;Known Build Error
117561 `JIT/Methodical/tailcall/deep_gc_d` failing with assert `dwILOffsetWalk == dwILOffsetDebugInterface` with JitStress 0 0 0 0 5 Tests disabled (workaround) disabled-test;os-linux;arch-x64;area-Diagnostics-coreclr;Known Build Error
116760 [8.0] TestRevocationWithNoNextUpdate_NotRevoked - System.Security.Cryptography.X509Certificates.Tests 0 0 0 0 8 Investigated, no fix area-System.Security;Known Build Error
116558 iOS.Device/Simulator.LibraryMode.Test: failed to determine exit code - RETURN_CODE_NOT_SET 0 0 0 0 1 Tests disabled (workaround) disabled-test;area-Infrastructure-mono;os-ios;Known Build Error
116393 Interop/COM/NativeClients/Dispatch test failure: 0x80131516 = dispatchCoerceTesting->Invoke 0 0 0 0 6 Investigated, no fix area-Interop-coreclr;blocking-clean-ci-optional;Known Build Error
116368 [wasm][release/9.0] Test SteppingIntoLibrarySymbolsLoadedFromSymbolServerAddOtherSymbolServerAndStepAgain timeouts 0 0 0 0 4 Investigated, no fix arch-wasm;area-Debugger-mono;Known Build Error
115467 [Test failure] ClientAsyncAuthenticate_ConnectionInfoInCallback_DoesNotThrow on android 0 0 0 0 6 Tests disabled (workaround) area-System.Net.Security;disabled-test;os-android;Known Build Error
114704 Timeout in HostFactoryResolverTests.NoSpecialEntryPointPatternCanRunInParallel 0 0 0 0 4 Investigated, no fix test-bug;help wanted;area-Extensions-Hosting;Known Build Error
114287 SIGKILL System.Runtime.Serialization.Formatters.Tests 0 0 0 0 2 Investigated, no fix area-System.Runtime;no-recent-activity;backlog-cleanup-candidate;Known Build Error
113686 [Long Running Test] 'System.Composition.UnitTests.ConcurrencyTests.SharedInstancesAreNotVisibleUntilActivationCompletes' 0 0 0 0 5 Investigated, no fix investigate;area-System.Composition;test-bug;runtime-mono;Known Build Error
112423 [9.0][source-build] Could not find BROTLIDEC using the following names: brotlidec 0 0 0 0 1 Investigated, no fix os-linux;area-Infrastructure-coreclr;source-build;untriaged;Known Build Error
112422 [9.0] Native crash in System.Data.Odbc tests in linux x64 mono 0 0 0 0 5 Investigated, no fix os-linux;arch-x64;runtime-mono;area-System.Data.Odbc;Known Build Error
111431 [9.0] Process test expecting sleep but shows .NET long running process 0 0 0 0 8 Active recent PR (#125918) area-System.Diagnostics.Process;os-linux;arch-x64;runtime-coreclr;Known Build Error
110952 [Mono/linux-arm64] int32_t CryptoNative_EvpPKeyBits(EVP_PKEY *): Assertion `pkey != NULL' failed. 0 0 0 0 5 Investigated, no fix area-VM-meta-mono;Known Build Error
110643 System.Diagnostics.Process.Tests failure on net10.0-linux-Debug-arm64-Mono_Minijit_Debug 0 0 0 0 6 Investigated, no fix area-System.Diagnostics.Process;Known Build Error
109565 [8.0] Assert contains failure, not found "Stopping after AOT" in Wasm.Build.Tests.NativeBuildTests.MonoAOTCross_WorksWit 0 0 0 0 2 Investigated, no fix test-failure;arch-wasm;os-linux;area-VM-meta-mono;runtime-mono;wasm-aot-test;Known Build Error;os-browser
107933 [9.0][osx] Access to path denied, bad file descriptor IOException in System.Diagnostics.Tests.ProcessTests.Start_Redirec 0 0 0 0 7 Uninvestigated area-System.Diagnostics.Process;os-mac-os-x;arch-x64;runtime-coreclr;Known Build Error
106634 [Test Failure] NoCallback_RevokedCertificate_NoRevocationChecking_Succeeds on Alpine 0 0 0 0 5 Tests disabled (workaround) area-System.Net.Http;disabled-test;tracking-external-issue;Known Build Error
106088 Analyzer 'Microsoft.NetCore.CSharp.Analyzers.Performance.CSharpConstantExpectedAnalyzer' threw an exception of type 'Sys 0 0 0 0 1 Investigated, no fix area-Infrastructure-libraries;code-analyzer;Known Build Error
106071 [mono] FullAOT build asserts at `class1 != ARG_CLASS_NO_CLASS' for EmptyStructs.dll 0 0 0 0 3 Tests disabled (workaround) disabled-test;arch-x64;area-Codegen-AOT-mono;Known Build Error
105265 Hang in FileShareOpen_Inheritable 0 0 0 0 7 Investigated, no fix area-System.IO;os-mac-os-x;Known Build Error
105124 Test failure: System.Transactions.Tests.TransactionManagerTest.DefaultTimeout_MaxTimeout_Set_Get 0 0 0 0 3 Investigated, no fix bug;area-System.Transactions;os-windows;blocking-clean-ci-optional;Known Build Error
104933 [6.0] Internal exception in System.Security.Cryptography.Dsa.Tests.DsaSpanSignatureFormatTests tests 0 0 0 0 7 Uninvestigated area-System.Security;os-windows;arch-x64;runtime-coreclr;Known Build Error
104889 [browser][MT] ReleaseJSOwnedObjectByGCHandle: Unexpected synchronous failure 0 0 0 0 5 Investigated, no fix area-VM-threading-mono;area-System.Runtime.InteropServices.JavaScript;Known Build Error;os-browser
104827 [8.0][browser][wasm] emcc failure to compile aot-instances 0 0 0 0 1 Investigated, no fix arch-wasm;os-linux;area-Infrastructure-mono;wasm-aot-test;Known Build Error;os-browser
104823 [6.0] Microsoft.Extensions.FileProviders.Physical.Tests failing to access a symlink used by PhysicalFilesWatcher 0 0 0 0 10 Uninvestigated test-failure;os-windows;arch-x64;runtime-coreclr;area-Extensions-FileSystem;Known Build Error
104586 [outerloop] `System.Numerics.Tests.ToStringTest.ToString_ValidLargeFormat` faling with `OutOfMemoryException` 0 0 0 0 7 Investigated, no fix area-System.Numerics;Known Build Error
104572 [8.0] Failure in `System.Diagnostics.Tests.PerformanceCounterTests.PerformanceCounter_Increment`: Category 'PerformanceC 0 0 0 0 8 Investigated, no fix area-System.Diagnostics.PerformanceCounter;Known Build Error
104333 runtime-community: Failure to build System.Security.Cryptography.Native/opensslshim.c due to overflow in expression with 0 0 0 0 1 Investigated, no fix os-linux;area-Infrastructure;runtime-mono;Known Build Error
104271 [wasm][mt] mono_wasm_load_runtime () failed RuntimeError: index out of bounds 0 0 0 0 5 Tests disabled (workaround) disabled-test;area-VM-threading-mono;Known Build Error;os-browser
103520 [Mono AOT] Failed to compile System.Private.CoreLib.dll.bc 0 0 0 0 5 Investigated, no fix arch-wasm;area-VM-meta-mono;Known Build Error;os-wasi
102150 [mono] [aot] Mono mini and LLVM fullAOT CI jobs are failing due to Failed to load AOT module X86_Sse2_r/ro.dll in aot-on 0 0 0 0 5 Tests disabled (workaround) disabled-test;area-Codegen-AOT-mono;Known Build Error
101096 GetLoadLevel() postcondition failure 0 0 0 0 5 Investigated, no fix area-AssemblyLoader-coreclr;Known Build Error
100088 System.Net.Tests.HttpListenerRequestTests fail with SocketException : Connection refused 0 0 0 0 9 Investigated, no fix area-System.Net;Known Build Error
99423 [8.0][wasm] Exit code 137 returned from docker process after executing containerHandlerInvoker.js, cs files specified mu 0 0 0 0 2 Investigated, no fix arch-wasm;area-VM-meta-mono;runtime-mono;Known Build Error
96879 [6.0] Test failure in System.Text.Json.Tests.Utf8JsonWriterTests.Writing3MBBase64Bytes(formatted: True, skipValidation: 0 0 0 0 9 Uninvestigated area-System.Text.Json;os-mac-os-x;test-bug;arch-x64;runtime-mono;Known Build Error
95160 [8.0] [wasm] [AOT] HTTP Error 500.30 - ASP.NET Core app failed to start 0 0 0 0 1 Uninvestigated os-windows;area-Infrastructure;Known Build Error
93321 Test failure: AggregateException: Not all processes in process tree could be terminated. 0 0 0 0 8 Active recent PR (#125916) area-System.Diagnostics.Process;Known Build Error
92420 [8.0] coreclr test failure: readytorun_GenericCycleDetection._Depth3Test_Depth3Test_._Depth3Test_Depth3Test_sh() 0 0 0 0 8 Uninvestigated arch-arm64;os-linux;area-ReadyToRun-coreclr;runtime-coreclr;Known Build Error
91987 The system cannot open the device or file specified 'NuGet-Migrations' 0 0 0 0 3 Active PR (#125524) area-System.Threading;in-pr;Known Build Error
90803 Address race in PerformanceCounterLib 0 0 0 0 7 Investigated, no fix arch-arm64;os-windows;help wanted;blocking-clean-ci-optional;needs-further-triage;area-System.Diagnostics.PerformanceCounter;Known Build Error
88272 OOM on System.Text.Json.Tests.Utf8JsonWriterTests.WriteRawLargeJsonToStreamWithoutFlushing 0 0 0 0 7 Tests disabled (workaround) test-failure;area-System.Text.Json;disabled-test;Known Build Error
81383 [6.0] GC test failures: Handle collector count overflows or underflows 0 0 0 0 8 Investigated, no fix area-GC-coreclr;Known Build Error
75417 System.Diagnostics.Tests.InstanceDataTests.InstanceDataCollectionCollection tests failing in CI 0 0 0 0 6 Uninvestigated needs-further-triage;area-System.Diagnostics.PerformanceCounter;Known Build Error
69101 `System.IO.Pipes.Tests.NamedPipeTest_Specific.ClientConnectAsync_Cancel_With_InfiniteTimeout` failing on `Libraries Test 0 0 0 0 7 Tests disabled (workaround) test-failure;area-System.IO;disabled-test;os-windows;Known Build Error
53420 Compiler crashes when failing to release Mutex 0 0 0 0 5 Investigated, no fix bug;os-linux;area-PAL-coreclr;Known Build Error
48070 Build on Windows Fails sometimes with fatal error C1090: PDB API call failed 0 0 0 0 1 Investigated, no fix area-Infrastructure-coreclr;Known Build Error
35066 DataContractSerializerTests.DCS_MyPersonSurrogate_Stress failing in CI 0 0 0 0 9 Investigated, no fix area-Serialization;untriaged;Known Build Error
29383 Test Failure: System.Diagnostics.Tests.ProcessTests/LongProcessNamesAreSupported 0 0 0 0 9 Investigated, no fix area-System.Diagnostics.Process;test-run-core;blocking-clean-ci-optional;Known Build Error
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