MSBuild AppleAppBuilderTask MSB4018 exceptions from unresolved arm64 Swift linker symbols on iOS arm64 release builds

[matouskozak]

Note: This issue was automatically generated by AI-Test-Triage. Please review and triage accordingly.

Build Information

Build: 20251203.1, 20251203.5, 20251204.1

Build error leg or test failing: System.IO.MemoryMappedFiles.Tests.WorkItemExecution, System.IO.Hashing.Tests.WorkItemExecution, System.Runtime.Numerics.Tests.WorkItemExecution, System.Runtime.Tests.WorkItemExecution, iOS.Device.Aot.Test.WorkItemExecution, iOS.Device.ExportManagedSymbols.Test.WorkItemExecution, CoreMangLib.WorkItemExecution, Directed_1.WorkItemExecution, iOS.Device.ParallelForEachAsync.Test.WorkItemExecution, Directed_2.WorkItemExecution, Exceptions.WorkItemExecution, Directed_3.WorkItemExecution, GC.WorkItemExecution, GC-features.WorkItemExecution, GC-scenarios1.WorkItemExecution, IL_Conformance.WorkItemExecution, GC-simulator.WorkItemExecution, Interop.WorkItemExecution, JIT.CodeGenBringUpTests_d.WorkItemExecution, JIT.CodeGenBringUpTests_do.WorkItemExecution, JIT.CodeGenBringUpTests_r.WorkItemExecution, JIT.Generics.WorkItemExecution, JIT.CodeGenBringUpTests_ro.WorkItemExecution, JIT.SIMD.WorkItemExecution, JIT.opt.WorkItemExecution, JIT_d.WorkItemExecution, JIT.performance.WorkItemExecution, JIT_do.WorkItemExecution, JIT_others.WorkItemExecution, JIT_r.WorkItemExecution, JIT_ro.WorkItemExecution, Loader.WorkItemExecution, LoaderClassloaderGenerics.WorkItemExecution, LoaderClassloaderRegressions.WorkItemExecution, Methodical_d1.WorkItemExecution, Methodical_d2.WorkItemExecution, Methodical_do.WorkItemExecution, Methodical_r1.WorkItemExecution, Methodical_r2.WorkItemExecution, Methodical_ro.WorkItemExecution, Methodical_others.WorkItemExecution, Regression_1.WorkItemExecution, Regression_2.WorkItemExecution, Regression_10.WorkItemExecution, Regression_3.WorkItemExecution, Regression_5.WorkItemExecution, Regression_6.WorkItemExecution, Regression_4.WorkItemExecution, Regression_7.WorkItemExecution, Regression_8.WorkItemExecution, Regression_9.WorkItemExecution, Regression_NoOptimize_r_1.WorkItemExecution, Regression_NoOptimize_d.WorkItemExecution, Regression_PdbOnly_r.WorkItemExecution, Regression_PdbOnly_r_1.WorkItemExecution, Regression_PdbOnly_r_2.WorkItemExecution, Regression_PdbOnly_r_3.WorkItemExecution, Regression_PdbOnly_r_4.WorkItemExecution, Regression_d.WorkItemExecution, Regression_PdbOnly_ro.WorkItemExecution, Regression_do.WorkItemExecution, Regression_o_1.WorkItemExecution, Regression_o_3.WorkItemExecution, Regression_o_2.WorkItemExecution, Regression_r_1.WorkItemExecution, Regression_ro_2.WorkItemExecution, Regression_ro_1.WorkItemExecution, Regressions.WorkItemExecution, baseservices.WorkItemExecution, jit64_1.WorkItemExecution, baseservices-exceptions.WorkItemExecution, jit64_3.WorkItemExecution, jit64_5.WorkItemExecution, readytorun.WorkItemExecution, threading_group2.WorkItemExecution, threading_group1.WorkItemExecution, reflection.WorkItemExecution, tracing.WorkItemExecution

Affected CI jobs: ios_arm64_Release_AllSubsets_Mono, ios_arm64_Release_AllSubsets_Mono_RuntimeTests

Causing Commit Range Information

Commit range: View Changes

• Last passing build: 20251128.1 --- dotnet/runtime-805ac0b
• First failing build: 20251128.2 --- dotnet/runtime-96acc3c

Summary

• Build failures triggered by MSB4018 exceptions due to unresolved arm64 Swift linker symbols during native linking
• Failures occur in ios_arm64_Release_AllSubsets_Mono and ios_arm64_Release_AllSubsets_Mono_RuntimeTests jobs targeting iOS arm64
• xcodebuild fails with exit code 65; linker commands fail with exit code 1 causing AppleAppBuilderTask to fail with MSB4018 errors
• Missing arm64 Swift runtime force load symbols from Swift and Apple native libs cause linker failures during AOT compilation
• Failures correlate with DVTCoreDevice disabled state but also occur independently across multiple build contexts
• Infrastructure and platform instabilities cause unreliable native and Swift symbol linkage in arm64 release builds on Xcode 14.3+

Failure Statistics

• Occurrence Count: 234
• First Failure: 2025-12-03 09:00:00 UTC
• Last Failure: 2025-12-04 09:00:00 UTC

Work Items

Work Item	Console Log	Build	Job Name
System.IO.MemoryMappedFiles.Tests	View Extract Exit code: 65 /tmp/helix/working/C1980A95/p/build/apple/AppleBuild.targets(319,5): error MSB4018: The "AppleAppBuilderTask" task failed unexpectedly. [/private/tmp/helix/working/C1980A95/w/A7ED0974/e/publish/ProxyProjectForAOTOnHelix.proj] /tmp/helix/working/C1980A95/p/build/apple/AppleBuild.targets(319,5): error MSB4018: System.Exception: Error: Process returned non-zero exit code: 2025-12-04 04:52:56.396 xcodebuild[51521:416434] DVTCoreDeviceEnabledState: DVTCoreDeviceEnabledState_Disabled set via user default (DVTEnableCoreDevice=disabled) [/private/tmp/helix/working/C1980A95/w/A7ED0974/e/publish/ProxyProjectForAOTOnHelix.proj] /tmp/helix/working/C1980A95/p/build/apple/AppleBuild.targets(319,5): error MSB4018: ld: symbol(s) not found for architecture arm64 [/private/tmp/helix/working/C1980A95/w/A7ED0974/e/publish/ProxyProjectForAOTOnHelix.proj] /tmp/helix/working/C1980A95/p/build/apple/AppleBuild.targets(319,5): error MSB4018: clang: error: linker command failed with exit code 1 (use -v to see invocation) [/private/tmp/helix/working/C1980A95/w/A7ED0974/e/publish/ProxyProjectForAOTOnHelix.proj] /tmp/helix/working/C1980A95/p/build/apple/AppleBuild.targets(319,5): error MSB4018: ** BUILD FAILED ** [/private/tmp/helix/working/C1980A95/w/A7ED0974/e/publish/ProxyProjectForAOTOnHelix.proj] Full Log	20251204.1	ios_arm64_Release_AllSubsets_Mono
System.IO.Hashing.Tests	View Extract Exit code: 65 /tmp/helix/working/C1980A95/p/build/apple/AppleBuild.targets(319,5): error MSB4018: The "AppleAppBuilderTask" task failed unexpectedly. [/private/tmp/helix/working/C1980A95/w/B87609F5/e/publish/ProxyProjectForAOTOnHelix.proj] /tmp/helix/working/C1980A95/p/build/apple/AppleBuild.targets(319,5): error MSB4018: System.Exception: Error: Process returned non-zero exit code: 2025-12-04 04:51:53.372 xcodebuild[27202:197771] DVTCoreDeviceEnabledState: DVTCoreDeviceEnabledState_Disabled set via user default (DVTEnableCoreDevice=disabled) [/private/tmp/helix/working/C1980A95/w/B87609F5/e/publish/ProxyProjectForAOTOnHelix.proj] /tmp/helix/working/C1980A95/p/build/apple/AppleBuild.targets(319,5): error MSB4018: ld: symbol(s) not found for architecture arm64 [/private/tmp/helix/working/C1980A95/w/B87609F5/e/publish/ProxyProjectForAOTOnHelix.proj] /tmp/helix/working/C1980A95/p/build/apple/AppleBuild.targets(319,5): error MSB4018: clang: error: linker command failed with exit code 1 (use -v to see invocation) [/private/tmp/helix/working/C1980A95/w/B87609F5/e/publish/ProxyProjectForAOTOnHelix.proj] /tmp/helix/working/C1980A95/p/build/apple/AppleBuild.targets(319,5): error MSB4018: The following build commands failed: [/private/tmp/helix/working/C1980A95/w/B87609F5/e/publish/ProxyProjectForAOTOnHelix.proj] /tmp/helix/working/C1980A95/p/build/apple/AppleBuild.targets(319,5): error MSB4018: Ld /tmp/helix/working/C1980A95/w/B87609F5/e/apple_build/AppBundle/System.IO.Hashing.Tests/Release-iphoneos/System.IO.Hashing.Tests.app/System.IO.Hashing.Tests normal (in target 'System.IO.Hashing.Tests' from project 'System.IO.Hashing.Tests') [/private/tmp/helix/working/C1980A95/w/B87609F5/e/publish/ProxyProjectForAOTOnHelix.proj] Full Log	20251204.1	ios_arm64_Release_AllSubsets_Mono
System.Runtime.Numerics.Tests	View Extract Exit code: 65 /tmp/helix/working/C1980A95/p/build/apple/AppleBuild.targets(319,5): error MSB4018: The "AppleAppBuilderTask" task failed unexpectedly. [/private/tmp/helix/working/C1980A95/w/B04A094D/e/publish/ProxyProjectForAOTOnHelix.proj] /tmp/helix/working/C1980A95/p/build/apple/AppleBuild.targets(319,5): error MSB4018: System.Exception: Error: Process returned non-zero exit code: 2025-12-04 04:52:08.615 xcodebuild[48479:402613] DVTCoreDeviceEnabledState: DVTCoreDeviceEnabledState_Disabled set via user default (DVTEnableCoreDevice=disabled) [/private/tmp/helix/working/C1980A95/w/B04A094D/e/publish/ProxyProjectForAOTOnHelix.proj] ... /tmp/helix/working/C1980A95/p/build/apple/AppleBuild.targets(319,5): error MSB4018: "_swift_FORCE_LOAD$_swiftunistd", referenced from: [/private/tmp/helix/working/C1980A95/w/B04A094D/e/publish/ProxyProjectForAOTOnHelix.proj] /tmp/helix/working/C1980A95/p/build/apple/AppleBuild.targets(319,5): error MSB4018: _swift_FORCE_LOAD$swiftunistd$_pal_swiftbindings in libSystem.Security.Cryptography.Native.Apple.a(pal_swiftbindings.o) [/private/tmp/helix/working/C1980A95/w/B04A094D/e/publish/ProxyProjectForAOTOnHelix.proj] /tmp/helix/working/C1980A95/p/build/apple/AppleBuild.targets(319,5): error MSB4018: (maybe you meant: _swift_FORCE_LOAD$swiftunistd$_pal_swiftbindings) [/private/tmp/helix/working/C1980A95/w/B04A094D/e/publish/ProxyProjectForAOTOnHelix.proj] /tmp/helix/working/C1980A95/p/build/apple/AppleBuild.targets(319,5): error MSB4018: ld: symbol(s) not found for architecture arm64 [/private/tmp/helix/working/C1980A95/w/B04A094D/e/publish/ProxyProjectForAOTOnHelix.proj] /tmp/helix/working/C1980A95/p/build/apple/AppleBuild.targets(319,5): error MSB4018: clang: error: linker command failed with exit code 1 (use -v to see invocation) [/private/tmp/helix/working/C1980A95/w/B04A094D/e/publish/ProxyProjectForAOTOnHelix.proj] Full Log	20251204.1	ios_arm64_Release_AllSubsets_Mono
System.Runtime.Tests	View Extract Exit code: 0 Running: xcodebuild ONLY_ACTIVE_ARCH=YES CODE_SIGN_IDENTITY="" CODE_SIGNING_REQUIRED=NO CODE_SIGNING_ALLOWED=NO -arch arm64 -sdk iphoneos -configuration Release Using working directory: /tmp/helix/working/C1980A95/w/B06A09A0/e/apple_build/AppBundle/System.Runtime.Tests Exit code: 65 /tmp/helix/working/C1980A95/p/build/apple/AppleBuild.targets(319,5): error MSB4018: The "AppleAppBuilderTask" task failed unexpectedly. [/private/tmp/helix/working/C1980A95/w/B06A09A0/e/publish/ProxyProjectForAOTOnHelix.proj] /tmp/helix/working/C1980A95/p/build/apple/AppleBuild.targets(319,5): error MSB4018: System.Exception: Error: Process returned non-zero exit code: 2025-12-04 04:54:16.442 xcodebuild[47399:370374] DVTCoreDeviceEnabledState: DVTCoreDeviceEnabledState_Disabled set via user default (DVTEnableCoreDevice=disabled) [/private/tmp/helix/working/C1980A95/w/B06A09A0/e/publish/ProxyProjectForAOTOnHelix.proj] /tmp/helix/working/C1980A95/p/build/apple/AppleBuild.targets(319,5): error MSB4018: ld: symbol(s) not found for architecture arm64 [/private/tmp/helix/working/C1980A95/w/B06A09A0/e/publish/ProxyProjectForAOTOnHelix.proj] /tmp/helix/working/C1980A95/p/build/apple/AppleBuild.targets(319,5): error MSB4018: clang: error: linker command failed with exit code 1 (use -v to see invocation) [/private/tmp/helix/working/C1980A95/w/B06A09A0/e/publish/ProxyProjectForAOTOnHelix.proj] /tmp/helix/working/C1980A95/p/build/apple/AppleBuild.targets(319,5): error MSB4018: ** BUILD FAILED ** [/private/tmp/helix/working/C1980A95/w/B06A09A0/e/publish/ProxyProjectForAOTOnHelix.proj] Full Log	20251204.1	ios_arm64_Release_AllSubsets_Mono
iOS.Device.Aot.Test	View Extract Running: xcodebuild ONLY_ACTIVE_ARCH=YES CODE_SIGN_IDENTITY="" CODE_SIGNING_REQUIRED=NO CODE_SIGNING_ALLOWED=NO -arch arm64 -sdk iphoneos -configuration Release Using working directory: /tmp/helix/working/C1980A95/w/B44B09AD/e/apple_build/AppBundle/iOS.Device.Aot.Test Exit code: 65 /tmp/helix/working/C1980A95/p/build/apple/AppleBuild.targets(319,5): error MSB4018: The "AppleAppBuilderTask" task failed unexpectedly. [/private/tmp/helix/working/C1980A95/w/B44B09AD/e/publish/ProxyProjectForAOTOnHelix.proj] /tmp/helix/working/C1980A95/p/build/apple/AppleBuild.targets(319,5): error MSB4018: System.Exception: Error: Process returned non-zero exit code: 2025-12-04 04:52:50.395 xcodebuild[85643:881786] DVTCoreDeviceEnabledState: DVTCoreDeviceEnabledState_Disabled set via user default (DVTEnableCoreDevice=disabled) [/private/tmp/helix/working/C1980A95/w/B44B09AD/e/publish/ProxyProjectForAOTOnHelix.proj] /tmp/helix/working/C1980A95/p/build/apple/AppleBuild.targets(319,5): error MSB4018: ld: symbol(s) not found for architecture arm64 [/private/tmp/helix/working/C1980A95/w/B44B09AD/e/publish/ProxyProjectForAOTOnHelix.proj] /tmp/helix/working/C1980A95/p/build/apple/AppleBuild.targets(319,5): error MSB4018: clang: error: linker command failed with exit code 1 (use -v to see invocation) [/private/tmp/helix/working/C1980A95/w/B44B09AD/e/publish/ProxyProjectForAOTOnHelix.proj] /tmp/helix/working/C1980A95/p/build/apple/AppleBuild.targets(319,5): error MSB4018: ** BUILD FAILED ** [/private/tmp/helix/working/C1980A95/w/B44B09AD/e/publish/ProxyProjectForAOTOnHelix.proj] Full Log	20251204.1	ios_arm64_Release_AllSubsets_Mono
iOS.Device.ExportManagedSymbols.Test	View Extract Running: xcodebuild ONLY_ACTIVE_ARCH=YES CODE_SIGN_IDENTITY="" CODE_SIGNING_REQUIRED=NO CODE_SIGNING_ALLOWED=NO -arch arm64 -sdk iphoneos -configuration Release Using working directory: /tmp/helix/working/C1980A95/w/B278097F/e/apple_build/AppBundle/iOS.Device.ExportManagedSymbols.Test Exit code: 65 /tmp/helix/working/C1980A95/p/build/apple/AppleBuild.targets(319,5): error MSB4018: The "AppleAppBuilderTask" task failed unexpectedly. [/private/tmp/helix/working/C1980A95/w/B278097F/e/publish/ProxyProjectForAOTOnHelix.proj] /tmp/helix/working/C1980A95/p/build/apple/AppleBuild.targets(319,5): error MSB4018: System.Exception: Error: Process returned non-zero exit code: 2025-12-04 04:51:11.159 xcodebuild[27284:176831] DVTCoreDeviceEnabledState: DVTCoreDeviceEnabledState_Disabled set via user default (DVTEnableCoreDevice=disabled) [/private/tmp/helix/working/C1980A95/w/B278097F/e/publish/ProxyProjectForAOTOnHelix.proj] /tmp/helix/working/C1980A95/p/build/apple/AppleBuild.targets(319,5): error MSB4018: ld: symbol(s) not found for architecture arm64 [/private/tmp/helix/working/C1980A95/w/B278097F/e/publish/ProxyProjectForAOTOnHelix.proj] /tmp/helix/working/C1980A95/p/build/apple/AppleBuild.targets(319,5): error MSB4018: clang: error: linker command failed with exit code 1 (use -v to see invocation) [/private/tmp/helix/working/C1980A95/w/B278097F/e/publish/ProxyProjectForAOTOnHelix.proj] /tmp/helix/working/C1980A95/p/build/apple/AppleBuild.targets(319,5): error MSB4018: ** BUILD FAILED ** [/private/tmp/helix/working/C1980A95/w/B278097F/e/publish/ProxyProjectForAOTOnHelix.proj] Full Log	20251204.1	ios_arm64_Release_AllSubsets_Mono
CoreMangLib	View Extract Exit code: 65 /tmp/helix/working/BC160A40/p/build/apple/AppleBuild.targets(319,5): error MSB4018: The "AppleAppBuilderTask" task failed unexpectedly. [/private/tmp/helix/working/BC160A40/w/AB6B0991/e/publish/ProxyProjectForAOTOnHelix.proj] /tmp/helix/working/BC160A40/p/build/apple/AppleBuild.targets(319,5): error MSB4018: System.Exception: Error: Process returned non-zero exit code: 2025-12-04 05:04:43.328 xcodebuild[60052:459053] DVTCoreDeviceEnabledState: DVTCoreDeviceEnabledState_Disabled set via user default (DVTEnableCoreDevice=disabled) [/private/tmp/helix/working/BC160A40/w/AB6B0991/e/publish/ProxyProjectForAOTOnHelix.proj] /tmp/helix/working/BC160A40/p/build/apple/AppleBuild.targets(319,5): error MSB4018: ld: symbol(s) not found for architecture arm64 [/private/tmp/helix/working/BC160A40/w/AB6B0991/e/publish/ProxyProjectForAOTOnHelix.proj] /tmp/helix/working/BC160A40/p/build/apple/AppleBuild.targets(319,5): error MSB4018: clang: error: linker command failed with exit code 1 (use -v to see invocation) [/private/tmp/helix/working/BC160A40/w/AB6B0991/e/publish/ProxyProjectForAOTOnHelix.proj] /tmp/helix/working/BC160A40/p/build/apple/AppleBuild.targets(319,5): error MSB4018: ** BUILD FAILED ** [/private/tmp/helix/working/BC160A40/w/AB6B0991/e/publish/ProxyProjectForAOTOnHelix.proj] Full Log	20251204.1	ios_arm64_Release_AllSubsets_Mono_RuntimeTests
Directed_1	View Extract Exit code: 65 /tmp/helix/working/BC160A40/p/build/apple/AppleBuild.targets(319,5): error MSB4018: The "AppleAppBuilderTask" task failed unexpectedly. [/private/tmp/helix/working/BC160A40/w/A32F0930/e/publish/ProxyProjectForAOTOnHelix.proj] /tmp/helix/working/BC160A40/p/build/apple/AppleBuild.targets(319,5): error MSB4018: System.Exception: Error: Process returned non-zero exit code: 2025-12-04 05:05:35.484 xcodebuild[24930:228933] DVTCoreDeviceEnabledState: DVTCoreDeviceEnabledState_Disabled set via user default (DVTEnableCoreDevice=disabled) [/private/tmp/helix/working/BC160A40/w/A32F0930/e/publish/ProxyProjectForAOTOnHelix.proj] /tmp/helix/working/BC160A40/p/build/apple/AppleBuild.targets(319,5): error MSB4018: ld: symbol(s) not found for architecture arm64 [/private/tmp/helix/working/BC160A40/w/A32F0930/e/publish/ProxyProjectForAOTOnHelix.proj] /tmp/helix/working/BC160A40/p/build/apple/AppleBuild.targets(319,5): error MSB4018: clang: error: linker command failed with exit code 1 (use -v to see invocation) [/private/tmp/helix/working/BC160A40/w/A32F0930/e/publish/ProxyProjectForAOTOnHelix.proj] /tmp/helix/working/BC160A40/p/build/apple/AppleBuild.targets(319,5): error MSB4018: ** BUILD FAILED ** [/private/tmp/helix/working/BC160A40/w/A32F0930/e/publish/ProxyProjectForAOTOnHelix.proj] /tmp/helix/working/BC160A40/p/build/apple/AppleBuild.targets(319,5): error MSB4018: The following build commands failed: /tmp/helix/working/BC160A40/p/build/apple/AppleBuild.targets(319,5): error MSB4018: Ld /tmp/helix/working/BC160A40/w/A32F0930/e/apple_build/AppBundle/Directed_1/Release-iphoneos/Directed_1.app/Directed_1 normal (in target 'Directed_1' from project 'Directed_1') [/private/tmp/helix/working/BC160A40/w/A32F0930/e/publish/ProxyProjectForAOTOnHelix.proj] Full Log	20251204.1	ios_arm64_Release_AllSubsets_Mono_RuntimeTests
iOS.Device.ParallelForEachAsync.Test	View Extract Exit code: 65 /tmp/helix/working/C1980A95/p/build/apple/AppleBuild.targets(319,5): error MSB4018: The "AppleAppBuilderTask" task failed unexpectedly. [/private/tmp/helix/working/C1980A95/w/A5000924/e/publish/ProxyProjectForAOTOnHelix.proj] /tmp/helix/working/C1980A95/p/build/apple/AppleBuild.targets(319,5): error MSB4018: System.Exception: Error: Process returned non-zero exit code: 2025-12-04 04:49:10.319 xcodebuild[24419:224377] DVTCoreDeviceEnabledState: DVTCoreDeviceEnabledState_Disabled set via user default (DVTEnableCoreDevice=disabled) [/private/tmp/helix/working/C1980A95/w/A5000924/e/publish/ProxyProjectForAOTOnHelix.proj] /tmp/helix/working/C1980A95/p/build/apple/AppleBuild.targets(319,5): error MSB4018: "_swift_FORCE_LOAD$_swiftunistd", referenced from: [/private/tmp/helix/working/C1980A95/w/A5000924/e/publish/ProxyProjectForAOTOnHelix.proj] /tmp/helix/working/C1980A95/p/build/apple/AppleBuild.targets(319,5): error MSB4018: ld: symbol(s) not found for architecture arm64 [/private/tmp/helix/working/C1980A95/w/A5000924/e/publish/ProxyProjectForAOTOnHelix.proj] /tmp/helix/working/C1980A95/p/build/apple/AppleBuild.targets(319,5): error MSB4018: clang: error: linker command failed with exit code 1 (use -v to see invocation) [/private/tmp/helix/working/C1980A95/w/A5000924/e/publish/ProxyProjectForAOTOnHelix.proj] /tmp/helix/working/C1980A95/p/build/apple/AppleBuild.targets(319,5): error MSB4018: ** BUILD FAILED ** [/private/tmp/helix/working/C1980A95/w/A5000924/e/publish/ProxyProjectForAOTOnHelix.proj] /tmp/helix/working/C1980A95/p/build/apple/AppleBuild.targets(319,5): error MSB4018: The following build commands failed: [/private/tmp/helix/working/C1980A95/w/A5000924/e/publish/ProxyProjectForAOTOnHelix.proj] /tmp/helix/working/C1980A95/p/build/apple/AppleBuild.targets(319,5): error MSB4018: Ld /tmp/helix/working/C1980A95/w/A5000924/e/apple_build/AppBundle/iOS.Device.ParallelForEachAsync.Test/Release-iphoneos/iOS.Device.ParallelForEachAsync.Test.app/iOS.Device.ParallelForEachAsync.Test normal (in target 'iOS.Device.ParallelForEachAsync.Test' from project 'iOS.Device.ParallelForEachAsync.Test') [/private/tmp/helix/working/C1980A95/w/A5000924/e/publish/ProxyProjectForAOTOnHelix.proj] Full Log	20251204.1	ios_arm64_Release_AllSubsets_Mono
Directed_2	View Extract Running: xcodebuild ONLY_ACTIVE_ARCH=YES CODE_SIGN_IDENTITY="" CODE_SIGNING_REQUIRED=NO CODE_SIGNING_ALLOWED=NO -arch arm64 -sdk iphoneos -configuration Release Using working directory: /tmp/helix/working/BC160A40/w/AF100961/e/apple_build/AppBundle/Directed_2 Exit code: 65 /tmp/helix/working/BC160A40/p/build/apple/AppleBuild.targets(319,5): error MSB4018: The "AppleAppBuilderTask" task failed unexpectedly. [/private/tmp/helix/working/BC160A40/w/AF100961/e/publish/ProxyProjectForAOTOnHelix.proj] /tmp/helix/working/BC160A40/p/build/apple/AppleBuild.targets(319,5): error MSB4018: System.Exception: Error: Process returned non-zero exit code: 2025-12-04 05:07:59.938 xcodebuild[65955:534480] DVTCoreDeviceEnabledState: DVTCoreDeviceEnabledState_Disabled set via user default (DVTEnableCoreDevice=disabled) [/private/tmp/helix/working/BC160A40/w/AF100961/e/publish/ProxyProjectForAOTOnHelix.proj] /tmp/helix/working/BC160A40/p/build/apple/AppleBuild.targets(319,5): error MSB4018: "_swift_FORCE_LOAD$_swiftunistd", referenced from: [/private/tmp/helix/working/BC160A40/w/AF100961/e/publish/ProxyProjectForAOTOnHelix.proj] /tmp/helix/working/BC160A40/p/build/apple/AppleBuild.targets(319,5): error MSB4018: _swift_FORCE_LOAD$swiftunistd$_pal_swiftbindings in libSystem.Security.Cryptography.Native.Apple.a(pal_swiftbindings.o) [/private/tmp/helix/working/BC160A40/w/AF100961/e/publish/ProxyProjectForAOTOnHelix.proj] /tmp/helix/working/BC160A40/p/build/apple/AppleBuild.targets(319,5): error MSB4018: ld: symbol(s) not found for architecture arm64 [/private/tmp/helix/working/BC160A40/w/AF100961/e/publish/ProxyProjectForAOTOnHelix.proj] /tmp/helix/working/BC160A40/p/build/apple/AppleBuild.targets(319,5): error MSB4018: clang: error: linker command failed with exit code 1 (use -v to see invocation) [/private/tmp/helix/working/BC160A40/w/AF100961/e/publish/ProxyProjectForAOTOnHelix.proj] /tmp/helix/working/BC160A40/p/build/apple/AppleBuild.targets(319,5): error MSB4018: ** BUILD FAILED ** [/private/tmp/helix/working/BC160A40/w/AF100961/e/publish/ProxyProjectForAOTOnHelix.proj] Full Log	20251204.1	ios_arm64_Release_AllSubsets_Mono_RuntimeTests
Exceptions	View Extract Exit code: 65 /tmp/helix/working/BC160A40/p/build/apple/AppleBuild.targets(319,5): error MSB4018: The "AppleAppBuilderTask" task failed unexpectedly. [/private/tmp/helix/working/BC160A40/w/9CFA0889/e/publish/ProxyProjectForAOTOnHelix.proj] /tmp/helix/working/BC160A40/p/build/apple/AppleBuild.targets(319,5): error MSB4018: System.Exception: Error: Process returned non-zero exit code: 2025-12-04 05:05:24.931 xcodebuild[27843:201811] DVTCoreDeviceEnabledState: DVTCoreDeviceEnabledState_Disabled set via user default (DVTEnableCoreDevice=disabled) [/private/tmp/helix/working/BC160A40/w/9CFA0889/e/publish/ProxyProjectForAOTOnHelix.proj] /tmp/helix/working/BC160A40/p/build/apple/AppleBuild.targets(319,5): error MSB4018: ld: symbol(s) not found for architecture arm64 [/private/tmp/helix/working/BC160A40/w/9CFA0889/e/publish/ProxyProjectForAOTOnHelix.proj] /tmp/helix/working/BC160A40/p/build/apple/AppleBuild.targets(319,5): error MSB4018: clang: error: linker command failed with exit code 1 (use -v to see invocation) [/private/tmp/helix/working/BC160A40/w/9CFA0889/e/publish/ProxyProjectForAOTOnHelix.proj] /tmp/helix/working/BC160A40/p/build/apple/AppleBuild.targets(319,5): error MSB4018: ** BUILD FAILED ** [/private/tmp/helix/working/BC160A40/w/9CFA0889/e/publish/ProxyProjectForAOTOnHelix.proj] Full Log	20251204.1	ios_arm64_Release_AllSubsets_Mono_RuntimeTests
Directed_3	View Extract Exit code: 0 Running: xcodebuild ONLY_ACTIVE_ARCH=YES CODE_SIGN_IDENTITY="" CODE_SIGNING_REQUIRED=NO CODE_SIGNING_ALLOWED=NO -arch arm64 -sdk iphoneos -configuration Release Using working directory: /tmp/helix/working/BC160A40/w/983C0873/e/apple_build/AppBundle/Directed_3 Exit code: 65 /tmp/helix/working/BC160A40/p/build/apple/AppleBuild.targets(319,5): error MSB4018: The "AppleAppBuilderTask" task failed unexpectedly. [/private/tmp/helix/working/BC160A40/w/983C0873/e/publish/ProxyProjectForAOTOnHelix.proj] /tmp/helix/working/BC160A40/p/build/apple/AppleBuild.targets(319,5): error MSB4018: System.Exception: Error: Process returned non-zero exit code: 2025-12-04 05:07:55.371 xcodebuild[61066:462041] DVTCoreDeviceEnabledState: DVTCoreDeviceEnabledState_Disabled set via user default (DVTEnableCoreDevice=disabled) [/private/tmp/helix/working/BC160A40/w/983C0873/e/publish/ProxyProjectForAOTOnHelix.proj] /tmp/helix/working/BC160A40/p/build/apple/AppleBuild.targets(319,5): error MSB4018: "_swift_FORCE_LOAD$_swiftunistd", referenced from: [/private/tmp/helix/working/BC160A40/w/983C0873/e/publish/ProxyProjectForAOTOnHelix.proj] /tmp/helix/working/BC160A40/p/build/apple/AppleBuild.targets(319,5): error MSB4018: _swift_FORCE_LOAD$swiftunistd$_pal_swiftbindings in libSystem.Security.Cryptography.Native.Apple.a(pal_swiftbindings.o) [/private/tmp/helix/working/BC160A40/w/983C0873/e/publish/ProxyProjectForAOTOnHelix.proj] /tmp/helix/working/BC160A40/p/build/apple/AppleBuild.targets(319,5): error MSB4018: (maybe you meant: _swift_FORCE_LOAD$swiftunistd$_pal_swiftbindings) [/private/tmp/helix/working/BC160A40/w/983C0873/e/publish/ProxyProjectForAOTOnHelix.proj] /tmp/helix/working/BC160A40/p/build/apple/AppleBuild.targets(319,5): error MSB4018: ld: symbol(s) not found for architecture arm64 [/private/tmp/helix/working/BC160A40/w/983C0873/e/publish/ProxyProjectForAOTOnHelix.proj] /tmp/helix/working/BC160A40/p/build/apple/AppleBuild.targets(319,5): error MSB4018: clang: error: linker command failed with exit code 1 (use -v to see invocation) [/private/tmp/helix/working/BC160A40/w/983C0873/e/publish/ProxyProjectForAOTOnHelix.proj] /tmp/helix/working/BC160A40/p/build/apple/AppleBuild.targets(319,5): error MSB4018: ** BUILD FAILED ** [/private/tmp/helix/working/BC160A40/w/983C0873/e/publish/ProxyProjectForAOTOnHelix.proj] /tmp/helix/working/BC160A40/p/build/apple/AppleBuild.targets(319,5): error MSB4018: The following build commands failed: [/private/tmp/helix/working/BC160A40/w/983C0873/e/publish/ProxyProjectForAOTOnHelix.proj] /tmp/helix/working/BC160A40/p/build/apple/AppleBuild.targets(319,5): error MSB4018: Ld /tmp/helix/working/BC160A40/w/983C0873/e/apple_build/AppBundle/Directed_3/Release-iphoneos/Directed_3.app/Directed_3 normal (in target 'Directed_3' from project 'Directed_3') [/private/tmp/helix/working/BC160A40/w/983C0873/e/publish/ProxyProjectForAOTOnHelix.proj] Full Log	20251204.1	ios_arm64_Release_AllSubsets_Mono_RuntimeTests

Error Message

{
  "ErrorMessage": "error MSB4018: ld: symbol(s) not found for architecture arm64",
  "BuildRetry": false,
  "ExcludeConsoleLog": false
}

Report

Build	Definition	Test	Pull Request
1256709	dotnet/runtime	iOS.Device.ParallelForEachAsync.Test.WorkItemExecution	#123298
1253975	dotnet/runtime	iOS.Device.ParallelForEachAsync.Test.WorkItemExecution	#121343
1253510	dotnet/runtime	System.Runtime.Tests.WorkItemExecution
1252521	dotnet/runtime	System.Runtime.Tests.WorkItemExecution	#121429
1252489	dotnet/runtime	System.Runtime.Tests.WorkItemExecution	#123116
1252181	dotnet/runtime	System.Runtime.Tests.WorkItemExecution
1252030	dotnet/runtime	iOS.Device.ParallelForEachAsync.Test.WorkItemExecution	#123056
1252027	dotnet/runtime	System.Runtime.Tests.WorkItemExecution	#121429
1252013	dotnet/runtime	System.Runtime.Tests.WorkItemExecution	#123062
1252018	dotnet/runtime	System.Runtime.Tests.WorkItemExecution
1250940	dotnet/runtime	iOS.Device.ParallelForEachAsync.Test.WorkItemExecution	#123113
1251234	dotnet/runtime	System.Runtime.Tests.WorkItemExecution	#123122
1251001	dotnet/runtime	iOS.Device.ParallelForEachAsync.Test.WorkItemExecution	#123116
1251004	dotnet/runtime	iOS.Device.ParallelForEachAsync.Test.WorkItemExecution	#123117
1250912	dotnet/runtime	iOS.Device.ParallelForEachAsync.Test.WorkItemExecution	#122268
1249966	dotnet/runtime	JIT_d.WorkItemExecution
1249206	dotnet/runtime	iOS.Device.ParallelForEachAsync.Test.WorkItemExecution
1249160	dotnet/runtime	iOS.Device.ParallelForEachAsync.Test.WorkItemExecution	#123070
1249077	dotnet/runtime	iOS.Device.ParallelForEachAsync.Test.WorkItemExecution
1248831	dotnet/runtime	iOS.Device.ParallelForEachAsync.Test.WorkItemExecution	#122422
1248882	dotnet/runtime	Directed_1.WorkItemExecution
1248447	dotnet/runtime	JIT_d.WorkItemExecution
1247629	dotnet/runtime	IL_Conformance.WorkItemExecution
1247210	dotnet/runtime	Methodical_d2.WorkItemExecution
1243560	dotnet/runtime	System.Runtime.Tests.WorkItemExecution	#122422
1243308	dotnet/runtime	JIT.SIMD.WorkItemExecution
1240563	dotnet/runtime	tracing.WorkItemExecution

Summary

24-Hour Hit Count	7-Day Hit Count	1-Month Count
0	16	27

[dotnet-policy-service]

Tagging subscribers to 'os-ios': @vitek-karas, @kotlarmilos, @steveisok, @akoeplinger
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Tagging subscribers to this area: @akoeplinger, @matouskozak, @simonrozsival
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