Build stuff #17
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Build stuff #17
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Setting V to anything than 0 (zero) enables verbose logging for
{ms,x}build as well as exports MONO_OPTIONS=--debug to enable
stack traces should an exception be thrown when running mono.
To add/override MONO_OPTIONS simply set it on the command line when
invoking make, for instance:
make V=1 MONO_OPTIONS="--trace"
File.Move will throw an exception whenever the target file exists. Assuming that the task should overwrite the existing target files for smooth operation, this change checks whether the target file exists and, if so, deletes it prior to calling File.Move
grendello
added a commit
to grendello/xamarin-android
that referenced
this pull request
Jul 18, 2018
Xamarin.Android uses the ILRepack task (https://www.nuget.org/packages/ILRepack.Lib.MSBuild.Task/) to repack/merge the `Xamarin.Android.Build.Tasks` assembly, a step that is performed after the `Xamarin.Android.Build.Tasks` project build completes. The step takes the project's output assembly and several other dependencies and merges them into one, replacing the original output assembly. For the majority of time it works flawlessly, however the scenario described below causes a Mono runtime crash (similar to this one mono/mono#9613, although not identical). The crash causes aren't yet know in every detail, but the high level overview of the issue is as follows. Mono runtime uses the `mmap(2)` system call on Unix to map the on-disk image of the assembly into memory. The mmapped area is used whenever the same assembly is loaded (e.g. via `Assembly.LoadFrom`) into the application to save time and memory. The memory is mapped as private which means that anything written to the mapped area by the Mono process is effectively discarded, that is not reflected in the file on disk. The protection, however, doesn't work in the other direction - when an external process (or even the same Mono process) writes to the file that was mmapped. Unfortunately, the OS kernel behavior in such instance is left undefined by the POSIX standard - the kernel can choose to reflect the on-disk change in the mapping or ignore it. On macOS the write is ignored, on Linux, however, the write leads either to the SIGBUS signal being sent to the process or corruption to the mmapped memory area (details of how this happens are, as of yet, unknown - it's just a theory at this point). The problem occurs in our case when the `ILRepacker` task overwrites the `Xamarin.Android.Build.Tasks.dll` assembly with its merged/repackaged form and that, somehow, corrupts Mono runtime's memory mapping of that assembly, eventually leading to a segfault: #0 0x00007f974fd1b23a in __waitpid (pid=pid@entry=120561, stat_loc=stat_loc@entry=0x7f9712162b9c, options=options@entry=0) at ../sysdeps/unix/sysv/linux/waitpid.c:30 #1 0x000055b471f36c96 in dump_native_stacktrace (ctx=0x7f97121637c0, signal=0x55b472147cd3 "SIGSEGV") at mini-posix.c:719 #2 0x000055b471f36df2 in mono_dump_native_crash_info (signal=signal@entry=0x55b472147cd3 "SIGSEGV", ctx=ctx@entry=0x7f97121637c0, info=info@entry=0x7f97121638f0) at mini-posix.c:742 #3 0x000055b471ecc620 in mono_handle_native_crash (signal=signal@entry=0x55b472147cd3 "SIGSEGV", ctx=ctx@entry=0x7f97121637c0, info=info@entry=0x7f97121638f0) at mini-exceptions.c:2938 dotnet#4 0x000055b471e4c82c in mono_sigsegv_signal_handler (_dummy=7, _info=0x7f97121638f0, context=0x7f97121637c0) at mini-runtime.c:3441 dotnet#5 <signal handler called> dotnet#6 __strcasecmp_l_avx () at ../sysdeps/x86_64/multiarch/strcmp-sse42.S:199 dotnet#7 0x000055b471fb2105 in mono_assembly_names_equal_flags (l=l@entry=0x7f96e0004370, r=r@entry=0x7f97307edb60, flags=flags@entry=MONO_ANAME_EQ_IGNORE_CASE) at assembly.c:663 dotnet#8 0x000055b471fa7baf in mono_domain_assembly_search (aname=0x7f96e0004370, user_data=0x0) at appdomain.c:2242 dotnet#9 0x000055b471fb10f7 in mono_assembly_invoke_search_hook_internal (aname=aname@entry=0x7f96e0004370, requesting=requesting@entry=0x0, refonly=0, postload=postload@entry=0) at assembly.c:1755 dotnet#10 0x000055b471fb4526 in mono_assembly_load_from_predicate (image=image@entry=0x7f96e001aae0, fname=fname@entry=0x7f96e000bc50 "/home/grendel/vc/xamarin/monodroid/monodroid/external/xamarin-android/src/Xamarin.Android.Build.Tasks/../../packages/ILRepack.Lib.MSBuild.Task.2.0.15.4/build/ILRepack.Lib.MSBuild.Task.dll", asmctx=asmctx@entry=MONO_ASMCTX_LOADFROM, predicate=predicate@entry=0x0, user_data=user_data@entry=0x0, status=status@entry=0x7f9712163fd4) at assembly.c:2638 dotnet#11 0x000055b471fb635c in mono_assembly_open_predicate (filename=<optimized out>, filename@entry=0x7f96e000ae40 "/home/grendel/vc/xamarin/monodroid/monodroid/external/xamarin-android/src/Xamarin.Android.Build.Tasks/../../packages/ILRepack.Lib.MSBuild.Task.2.0.15.4/build/ILRepack.Lib.MSBuild.Task.dll", asmctx=MONO_ASMCTX_LOADFROM, predicate=predicate@entry=0x0, user_data=user_data@entry=0x0, status=status@entry=0x7f9712163fd4) at assembly.c:2206 dotnet#12 0x000055b471fabd42 in ves_icall_System_Reflection_Assembly_LoadFrom (fname=..., refOnly=<optimized out>, error=0x7f9712164050) at appdomain.c:2272 dotnet#13 0x00000000412f4007 in ?? () dotnet#14 0x00007f97440e1918 in ?? () dotnet#15 0x00007f9749bd1800 in ?? () dotnet#16 0x00000000e36e75af in ?? () dotnet#17 0x00007f974434fda8 in ?? () dotnet#18 0x00007f9749bd18e0 in ?? () dotnet#19 0x00007f96e0002820 in ?? () dotnet#20 0x00007f9712164160 in ?? () dotnet#21 0x00007f9712164010 in ?? () dotnet#22 0x0000000000000000 in ?? () The crash occurs in frame 7, because the `r` parameter (an instance of the `MonoAssembly` structure) contains pointers that used to point to valid places in the `Xamarin.Android.Build.Tasks` assembbly's mmaped area, but now point to garbage data. One of those corrupted pointers is the ASCII assembly name - which is used by the function in frame 7. The situation can be detected by the runtime by using advisory locks and reporting the attempt to overwrite the mmapped area, however a fix would require creating a copy of all the assembly's in-memory data before the write is allowed and that might be too expensive. None of those measures are currently implemented by Mono (and it isn't sure if any of them will ever be implemented). The crash this commit fixes occurs in a very specific scenario - when building the `OpenTK.csproj` project *directly* (that is passing it as parameter to `msbuild`), which causes a the `Xamarin.Android.Build.Tasks` assembly to be loaded for use in the `<UsingTask/>` msbuild statement, but at the same time `OpenTK.csproj` references the `Xamarin.Android.Build.Tasks` *project* which causes the ILRepacker task to run unconditionally, attempting to repack the assemblies again and leading to the crash described above. The fix, courtesy of @jonpryor, is to make the ILRepacker target not run every time but only whenver the assembly has to be re-packed because it has just been rebuilt.
grendello
added a commit
to grendello/xamarin-android
that referenced
this pull request
Jul 19, 2018
Xamarin.Android uses the ILRepack task (https://www.nuget.org/packages/ILRepack.Lib.MSBuild.Task/) to repack/merge the `Xamarin.Android.Build.Tasks` assembly, a step that is performed after the `Xamarin.Android.Build.Tasks` project build completes. The step takes the project's output assembly and several other dependencies and merges them into one, replacing the original output assembly. For the majority of time it works flawlessly, however the scenario described below causes a Mono runtime crash (similar to this one mono/mono#9613, although not identical). The crash causes aren't yet know in every detail, but the high level overview of the issue is as follows. Mono runtime uses the `mmap(2)` system call on Unix to map the on-disk image of the assembly into memory. The mmapped area is used whenever the same assembly is loaded (e.g. via `Assembly.LoadFrom`) into the application to save time and memory. The memory is mapped as private which means that anything written to the mapped area by the Mono process is effectively discarded, that is not reflected in the file on disk. The protection, however, doesn't work in the other direction - when an external process (or even the same Mono process) writes to the file that was mmapped. Unfortunately, the OS kernel behavior in such instance is left undefined by the POSIX standard - the kernel can choose to reflect the on-disk change in the mapping or ignore it. On macOS the write is ignored, on Linux, however, the write leads either to the SIGBUS signal being sent to the process or corruption to the mmapped memory area (details of how this happens are, as of yet, unknown - it's just a theory at this point). The problem occurs in our case when the `ILRepacker` task overwrites the `Xamarin.Android.Build.Tasks.dll` assembly with its merged/repackaged form and that, somehow, corrupts Mono runtime's memory mapping of that assembly, eventually leading to a segfault: #0 0x00007f974fd1b23a in __waitpid (pid=pid@entry=120561, stat_loc=stat_loc@entry=0x7f9712162b9c, options=options@entry=0) at ../sysdeps/unix/sysv/linux/waitpid.c:30 #1 0x000055b471f36c96 in dump_native_stacktrace (ctx=0x7f97121637c0, signal=0x55b472147cd3 "SIGSEGV") at mini-posix.c:719 #2 0x000055b471f36df2 in mono_dump_native_crash_info (signal=signal@entry=0x55b472147cd3 "SIGSEGV", ctx=ctx@entry=0x7f97121637c0, info=info@entry=0x7f97121638f0) at mini-posix.c:742 #3 0x000055b471ecc620 in mono_handle_native_crash (signal=signal@entry=0x55b472147cd3 "SIGSEGV", ctx=ctx@entry=0x7f97121637c0, info=info@entry=0x7f97121638f0) at mini-exceptions.c:2938 dotnet#4 0x000055b471e4c82c in mono_sigsegv_signal_handler (_dummy=7, _info=0x7f97121638f0, context=0x7f97121637c0) at mini-runtime.c:3441 dotnet#5 <signal handler called> dotnet#6 __strcasecmp_l_avx () at ../sysdeps/x86_64/multiarch/strcmp-sse42.S:199 dotnet#7 0x000055b471fb2105 in mono_assembly_names_equal_flags (l=l@entry=0x7f96e0004370, r=r@entry=0x7f97307edb60, flags=flags@entry=MONO_ANAME_EQ_IGNORE_CASE) at assembly.c:663 dotnet#8 0x000055b471fa7baf in mono_domain_assembly_search (aname=0x7f96e0004370, user_data=0x0) at appdomain.c:2242 dotnet#9 0x000055b471fb10f7 in mono_assembly_invoke_search_hook_internal (aname=aname@entry=0x7f96e0004370, requesting=requesting@entry=0x0, refonly=0, postload=postload@entry=0) at assembly.c:1755 dotnet#10 0x000055b471fb4526 in mono_assembly_load_from_predicate (image=image@entry=0x7f96e001aae0, fname=fname@entry=0x7f96e000bc50 "/home/grendel/vc/xamarin/monodroid/monodroid/external/xamarin-android/src/Xamarin.Android.Build.Tasks/../../packages/ILRepack.Lib.MSBuild.Task.2.0.15.4/build/ILRepack.Lib.MSBuild.Task.dll", asmctx=asmctx@entry=MONO_ASMCTX_LOADFROM, predicate=predicate@entry=0x0, user_data=user_data@entry=0x0, status=status@entry=0x7f9712163fd4) at assembly.c:2638 dotnet#11 0x000055b471fb635c in mono_assembly_open_predicate (filename=<optimized out>, filename@entry=0x7f96e000ae40 "/home/grendel/vc/xamarin/monodroid/monodroid/external/xamarin-android/src/Xamarin.Android.Build.Tasks/../../packages/ILRepack.Lib.MSBuild.Task.2.0.15.4/build/ILRepack.Lib.MSBuild.Task.dll", asmctx=MONO_ASMCTX_LOADFROM, predicate=predicate@entry=0x0, user_data=user_data@entry=0x0, status=status@entry=0x7f9712163fd4) at assembly.c:2206 dotnet#12 0x000055b471fabd42 in ves_icall_System_Reflection_Assembly_LoadFrom (fname=..., refOnly=<optimized out>, error=0x7f9712164050) at appdomain.c:2272 dotnet#13 0x00000000412f4007 in ?? () dotnet#14 0x00007f97440e1918 in ?? () dotnet#15 0x00007f9749bd1800 in ?? () dotnet#16 0x00000000e36e75af in ?? () dotnet#17 0x00007f974434fda8 in ?? () dotnet#18 0x00007f9749bd18e0 in ?? () dotnet#19 0x00007f96e0002820 in ?? () dotnet#20 0x00007f9712164160 in ?? () dotnet#21 0x00007f9712164010 in ?? () dotnet#22 0x0000000000000000 in ?? () The accompanying managed stacktrace looks as follows: Stacktrace: at <unknown> <0xffffffff> at (wrapper managed-to-native) System.Reflection.Assembly.LoadFrom (string,bool) [0x0001b] in <79002cfb0e6e431d8465d6dcea08995e>:0 at System.Reflection.Assembly.LoadFrom (string) [0x00000] in /home/grendel/vc/mono/mono/mcs/class/corlib/System.Reflection/Assembly.cs:539 at System.Reflection.Assembly.UnsafeLoadFrom (string) [0x00000] in /home/grendel/vc/mono/mono/mcs/class/corlib/System.Reflection/Assembly.cs:571 at Microsoft.Build.Shared.TypeLoader.LoadAssembly (Microsoft.Build.Shared.AssemblyLoadInfo) [0x0001e] in <bdc5207a22bb42ae9fe3f3d07e82871e>:0 at Microsoft.Build.Shared.TypeLoader/AssemblyInfoToLoadedTypes.ScanAssemblyForPublicTypes () [0x00007] in <bdc5207a22bb42ae9fe3f3d07e82871e>:0 at Microsoft.Build.Shared.TypeLoader/AssemblyInfoToLoadedTypes/<>c__DisplayClass8_0.<GetLoadedTypeByTypeName>b__0 (string) [0x000b4] in <bdc5207a22bb42ae9fe3f3d07e82871e>:0 at System.Collections.Concurrent.ConcurrentDictionary`2<TKey_REF, TValue_REF>.GetOrAdd (TKey_REF,System.Func`2<TKey_REF, TValue_REF>) [0x00034] in <79002cfb0e6e431d8465d6dcea08995e>:0 at Microsoft.Build.Shared.TypeLoader/AssemblyInfoToLoadedTypes.GetLoadedTypeByTypeName (string) [0x0003c] in <bdc5207a22bb42ae9fe3f3d07e82871e>:0 at Microsoft.Build.Shared.TypeLoader.GetLoadedType (System.Collections.Concurrent.ConcurrentDictionary`2<System.Func`3<System.Type, object, bool>, System.Collections.Concurrent.ConcurrentDictionary`2<Microsoft.Build.Shared.AssemblyLoadInfo, Microsoft.Build.Shared.TypeLoader/AssemblyInfoToLoadedTypes>>,string,Microsoft.Build.Shared.AssemblyLoadInfo) [0x00042] in <bdc5207a22bb42ae9fe3f3d07e82871e>:0 at Microsoft.Build.Shared.TypeLoader.Load (string,Microsoft.Build.Shared.AssemblyLoadInfo) [0x00008] in <bdc5207a22bb42ae9fe3f3d07e82871e>:0 at Microsoft.Build.BackEnd.AssemblyTaskFactory.InitializeFactory (Microsoft.Build.Shared.AssemblyLoadInfo,string,System.Collections.Generic.IDictionary`2<string, Microsoft.Build.Framework.TaskPropertyInfo>,string,System.Collections.Generic.IDictionary`2<string, string>,bool,Microsoft.Build.BackEnd.Logging.TargetLoggingContext,Microsoft.Build.Construction.ElementLocation,string) [0x00058] in <bdc5207a22bb42ae9fe3f3d07e82871e>:0 at Microsoft.Build.Execution.TaskRegistry/RegisteredTaskRecord.GetTaskFactory (Microsoft.Build.BackEnd.Logging.TargetLoggingContext,Microsoft.Build.Construction.ElementLocation,string) [0x000b8] in <bdc5207a22bb42ae9fe3f3d07e82871e>:0 at Microsoft.Build.Execution.TaskRegistry/RegisteredTaskRecord.CanTaskBeCreatedByFactory (string,string,System.Collections.Generic.IDictionary`2<string, string>,Microsoft.Build.BackEnd.Logging.TargetLoggingContext,Microsoft.Build.Construction.ElementLocation) [0x0003b] in <bdc5207a22bb42ae9fe3f3d07e82871e>:0 at Microsoft.Build.Execution.TaskRegistry.GetMatchingRegistration (string,System.Collections.Generic.List`1<Microsoft.Build.Execution.TaskRegistry/RegisteredTaskRecord>,string,System.Collections.Generic.IDictionary`2<string, string>,Microsoft.Build.BackEnd.Logging.TargetLoggingContext,Microsoft.Build.Construction.ElementLocation) [0x0001a] in <bdc5207a22bb42ae9fe3f3d07e82871e>:0 at Microsoft.Build.Execution.TaskRegistry.GetTaskRegistrationRecord (string,string,System.Collections.Generic.IDictionary`2<string, string>,bool,Microsoft.Build.BackEnd.Logging.TargetLoggingContext,Microsoft.Build.Construction.ElementLocation,bool&) [0x00169] in <bdc5207a22bb42ae9fe3f3d07e82871e>:0 at Microsoft.Build.Execution.TaskRegistry.GetRegisteredTask (string,string,System.Collections.Generic.IDictionary`2<string, string>,bool,Microsoft.Build.BackEnd.Logging.TargetLoggingContext,Microsoft.Build.Construction.ElementLocation) [0x00010] in <bdc5207a22bb42ae9fe3f3d07e82871e>:0 at Microsoft.Build.BackEnd.TaskExecutionHost.FindTaskInRegistry (System.Collections.Generic.IDictionary`2<string, string>) [0x00038] in <bdc5207a22bb42ae9fe3f3d07e82871e>:0 at Microsoft.Build.BackEnd.TaskExecutionHost.Microsoft.Build.BackEnd.ITaskExecutionHost.FindTask (System.Collections.Generic.IDictionary`2<string, string>) [0x0000b] in <bdc5207a22bb42ae9fe3f3d07e82871e>:0 at Microsoft.Build.BackEnd.TaskBuilder/<ExecuteBucket>d__19.MoveNext () [0x0011e] in <bdc5207a22bb42ae9fe3f3d07e82871e>:0 at System.Runtime.CompilerServices.AsyncTaskMethodBuilder`1<Microsoft.Build.BackEnd.WorkUnitResult>.Start<Microsoft.Build.BackEnd.TaskBuilder/<ExecuteBucket>d__19> (Microsoft.Build.BackEnd.TaskBuilder/<ExecuteBucket>d__19&) [0x0002c] in /home/grendel/vc/mono/mono/mcs/class/referencesource/mscorlib/system/runtime/compilerservices/AsyncMethodBuilder.cs:471 at Microsoft.Build.BackEnd.TaskBuilder.ExecuteBucket (Microsoft.Build.BackEnd.TaskHost,Microsoft.Build.BackEnd.ItemBucket,Microsoft.Build.BackEnd.TaskExecutionMode,System.Collections.Generic.Dictionary`2<string, string>) [0x00048] in <bdc5207a22bb42ae9fe3f3d07e82871e>:0 at Microsoft.Build.BackEnd.TaskBuilder/<ExecuteTask>d__18.MoveNext () [0x0016a] in <bdc5207a22bb42ae9fe3f3d07e82871e>:0 at System.Runtime.CompilerServices.AsyncTaskMethodBuilder`1<Microsoft.Build.BackEnd.WorkUnitResult>.Start<Microsoft.Build.BackEnd.TaskBuilder/<ExecuteTask>d__18> (Microsoft.Build.BackEnd.TaskBuilder/<ExecuteTask>d__18&) [0x0002c] in /home/grendel/vc/mono/mono/mcs/class/referencesource/mscorlib/system/runtime/compilerservices/AsyncMethodBuilder.cs:471 at Microsoft.Build.BackEnd.TaskBuilder.ExecuteTask (Microsoft.Build.BackEnd.TaskExecutionMode,Microsoft.Build.BackEnd.Lookup) [0x00037] in <bdc5207a22bb42ae9fe3f3d07e82871e>:0 at Microsoft.Build.BackEnd.TaskBuilder/<ExecuteTask>d__13.MoveNext () [0x00193] in <bdc5207a22bb42ae9fe3f3d07e82871e>:0 at System.Runtime.CompilerServices.AsyncTaskMethodBuilder`1<Microsoft.Build.BackEnd.WorkUnitResult>.Start<Microsoft.Build.BackEnd.TaskBuilder/<ExecuteTask>d__13> (Microsoft.Build.BackEnd.TaskBuilder/<ExecuteTask>d__13&) [0x0002c] in /home/grendel/vc/mono/mono/mcs/class/referencesource/mscorlib/system/runtime/compilerservices/AsyncMethodBuilder.cs:471 at Microsoft.Build.BackEnd.TaskBuilder.ExecuteTask (Microsoft.Build.BackEnd.Logging.TargetLoggingContext,Microsoft.Build.BackEnd.BuildRequestEntry,Microsoft.Build.BackEnd.ITargetBuilderCallback,Microsoft.Build.Execution.ProjectTargetInstanceChild,Microsoft.Build.BackEnd.TaskExecutionMode,Microsoft.Build.BackEnd.Lookup,Microsoft.Build.BackEnd.Lookup,System.Threading.CancellationToken) [0x0006c] in <bdc5207a22bb42ae9fe3f3d07e82871e>:0 at Microsoft.Build.BackEnd.TargetEntry/<ProcessBucket>d__52.MoveNext () [0x00091] in <bdc5207a22bb42ae9fe3f3d07e82871e>:0 at System.Runtime.CompilerServices.AsyncTaskMethodBuilder`1<Microsoft.Build.BackEnd.WorkUnitResult>.Start<Microsoft.Build.BackEnd.TargetEntry/<ProcessBucket>d__52> (Microsoft.Build.BackEnd.TargetEntry/<ProcessBucket>d__52&) [0x0002c] in /home/grendel/vc/mono/mono/mcs/class/referencesource/mscorlib/system/runtime/compilerservices/AsyncMethodBuilder.cs:471 at Microsoft.Build.BackEnd.TargetEntry.ProcessBucket (Microsoft.Build.BackEnd.ITaskBuilder,Microsoft.Build.BackEnd.Logging.TargetLoggingContext,Microsoft.Build.BackEnd.TaskExecutionMode,Microsoft.Build.BackEnd.Lookup,Microsoft.Build.BackEnd.Lookup) [0x00051] in <bdc5207a22bb42ae9fe3f3d07e82871e>:0 at Microsoft.Build.BackEnd.TargetEntry/<ExecuteTarget>d__45.MoveNext () [0x002bb] in <bdc5207a22bb42ae9fe3f3d07e82871e>:0 at System.Runtime.CompilerServices.AsyncTaskMethodBuilder.Start<Microsoft.Build.BackEnd.TargetEntry/<ExecuteTarget>d__45> (Microsoft.Build.BackEnd.TargetEntry/<ExecuteTarget>d__45&) [0x0002c] in /home/grendel/vc/mono/mono/mcs/class/referencesource/mscorlib/system/runtime/compilerservices/AsyncMethodBuilder.cs:316 at Microsoft.Build.BackEnd.TargetEntry.ExecuteTarget (Microsoft.Build.BackEnd.ITaskBuilder,Microsoft.Build.BackEnd.BuildRequestEntry,Microsoft.Build.BackEnd.Logging.ProjectLoggingContext,System.Threading.CancellationToken) [0x00048] in <bdc5207a22bb42ae9fe3f3d07e82871e>:0 at Microsoft.Build.BackEnd.TargetBuilder/<ProcessTargetStack>d__21.MoveNext () [0x003a5] in <bdc5207a22bb42ae9fe3f3d07e82871e>:0 at System.Runtime.CompilerServices.AsyncMethodBuilderCore/MoveNextRunner.InvokeMoveNext (object) [0x00000] in /home/grendel/vc/mono/mono/mcs/class/referencesource/mscorlib/system/runtime/compilerservices/AsyncMethodBuilder.cs:1094 at System.Threading.ExecutionContext.RunInternal (System.Threading.ExecutionContext,System.Threading.ContextCallback,object,bool) [0x00071] in /home/grendel/vc/mono/mono/mcs/class/referencesource/mscorlib/system/threading/executioncontext.cs:961 at System.Threading.ExecutionContext.Run (System.Threading.ExecutionContext,System.Threading.ContextCallback,object,bool) [0x00000] in /home/grendel/vc/mono/mono/mcs/class/referencesource/mscorlib/system/threading/executioncontext.cs:908 at System.Runtime.CompilerServices.AsyncMethodBuilderCore/MoveNextRunner.Run () [0x00024] in /home/grendel/vc/mono/mono/mcs/class/referencesource/mscorlib/system/runtime/compilerservices/AsyncMethodBuilder.cs:1075 at System.Threading.Tasks.AwaitTaskContinuation.RunOrScheduleAction (System.Action,bool,System.Threading.Tasks.Task&) [0x0001a] in /home/grendel/vc/mono/mono/external/corert/src/System.Private.CoreLib/src/System/Threading/Tasks/TaskContinuation.cs:680 at System.Threading.Tasks.Task.FinishContinuations () [0x00052] in /home/grendel/vc/mono/mono/external/corert/src/System.Private.CoreLib/src/System/Threading/Tasks/Task.cs:3198 at System.Threading.Tasks.Task.FinishStageThree () [0x0003c] in /home/grendel/vc/mono/mono/external/corert/src/System.Private.CoreLib/src/System/Threading/Tasks/Task.cs:2247 at System.Threading.Tasks.Task`1<System.Threading.Tasks.VoidTaskResult>.TrySetResult (System.Threading.Tasks.VoidTaskResult) [0x0004f] in /home/grendel/vc/mono/mono/external/corert/src/System.Private.CoreLib/src/System/Threading/Tasks/Future.cs:433 at System.Runtime.CompilerServices.AsyncTaskMethodBuilder`1<System.Threading.Tasks.VoidTaskResult>.SetResult (System.Threading.Tasks.VoidTaskResult) [0x0003d] in /home/grendel/vc/mono/mono/mcs/class/referencesource/mscorlib/system/runtime/compilerservices/AsyncMethodBuilder.cs:608 at System.Runtime.CompilerServices.AsyncTaskMethodBuilder`1<System.Threading.Tasks.VoidTaskResult>.SetResult (System.Threading.Tasks.Task`1<System.Threading.Tasks.VoidTaskResult>) [0x00010] in /home/grendel/vc/mono/mono/mcs/class/referencesource/mscorlib/system/runtime/compilerservices/AsyncMethodBuilder.cs:636 at System.Runtime.CompilerServices.AsyncTaskMethodBuilder.SetResult () [0x00000] in /home/grendel/vc/mono/mono/mcs/class/referencesource/mscorlib/system/runtime/compilerservices/AsyncMethodBuilder.cs:378 at Microsoft.Build.BackEnd.TargetEntry/<ExecuteTarget>d__45.MoveNext () [0x00720] in <bdc5207a22bb42ae9fe3f3d07e82871e>:0 at System.Runtime.CompilerServices.AsyncMethodBuilderCore/MoveNextRunner.InvokeMoveNext (object) [0x00000] in /home/grendel/vc/mono/mono/mcs/class/referencesource/mscorlib/system/runtime/compilerservices/AsyncMethodBuilder.cs:1094 at System.Threading.ExecutionContext.RunInternal (System.Threading.ExecutionContext,System.Threading.ContextCallback,object,bool) [0x00071] in /home/grendel/vc/mono/mono/mcs/class/referencesource/mscorlib/system/threading/executioncontext.cs:961 at System.Threading.ExecutionContext.Run (System.Threading.ExecutionContext,System.Threading.ContextCallback,object,bool) [0x00000] in /home/grendel/vc/mono/mono/mcs/class/referencesource/mscorlib/system/threading/executioncontext.cs:908 at System.Runtime.CompilerServices.AsyncMethodBuilderCore/MoveNextRunner.Run () [0x00024] in /home/grendel/vc/mono/mono/mcs/class/referencesource/mscorlib/system/runtime/compilerservices/AsyncMethodBuilder.cs:1075 at System.Threading.Tasks.AwaitTaskContinuation.RunOrScheduleAction (System.Action,bool,System.Threading.Tasks.Task&) [0x0001a] in /home/grendel/vc/mono/mono/external/corert/src/System.Private.CoreLib/src/System/Threading/Tasks/TaskContinuation.cs:680 at System.Threading.Tasks.Task.FinishContinuations () [0x00052] in /home/grendel/vc/mono/mono/external/corert/src/System.Private.CoreLib/src/System/Threading/Tasks/Task.cs:3198 at System.Threading.Tasks.Task.FinishStageThree () [0x0003c] in /home/grendel/vc/mono/mono/external/corert/src/System.Private.CoreLib/src/System/Threading/Tasks/Task.cs:2247 at System.Threading.Tasks.Task`1<TResult_REF>.TrySetResult (TResult_REF) [0x0004f] in <79002cfb0e6e431d8465d6dcea08995e>:0 at System.Runtime.CompilerServices.AsyncTaskMethodBuilder`1<TResult_REF>.SetResult (TResult_REF) [0x0003d] in <79002cfb0e6e431d8465d6dcea08995e>:0 at Microsoft.Build.BackEnd.TargetEntry/<ProcessBucket>d__52.MoveNext () [0x001d5] in <bdc5207a22bb42ae9fe3f3d07e82871e>:0 at System.Runtime.CompilerServices.AsyncMethodBuilderCore/MoveNextRunner.InvokeMoveNext (object) [0x00000] in /home/grendel/vc/mono/mono/mcs/class/referencesource/mscorlib/system/runtime/compilerservices/AsyncMethodBuilder.cs:1094 at System.Threading.ExecutionContext.RunInternal (System.Threading.ExecutionContext,System.Threading.ContextCallback,object,bool) [0x00071] in /home/grendel/vc/mono/mono/mcs/class/referencesource/mscorlib/system/threading/executioncontext.cs:961 at System.Threading.ExecutionContext.Run (System.Threading.ExecutionContext,System.Threading.ContextCallback,object,bool) [0x00000] in /home/grendel/vc/mono/mono/mcs/class/referencesource/mscorlib/system/threading/executioncontext.cs:908 at System.Runtime.CompilerServices.AsyncMethodBuilderCore/MoveNextRunner.Run () [0x00024] in /home/grendel/vc/mono/mono/mcs/class/referencesource/mscorlib/system/runtime/compilerservices/AsyncMethodBuilder.cs:1075 at System.Threading.Tasks.AwaitTaskContinuation.RunOrScheduleAction (System.Action,bool,System.Threading.Tasks.Task&) [0x0001a] in /home/grendel/vc/mono/mono/external/corert/src/System.Private.CoreLib/src/System/Threading/Tasks/TaskContinuation.cs:680 at System.Threading.Tasks.Task.FinishContinuations () [0x00052] in /home/grendel/vc/mono/mono/external/corert/src/System.Private.CoreLib/src/System/Threading/Tasks/Task.cs:3198 at System.Threading.Tasks.Task.FinishStageThree () [0x0003c] in /home/grendel/vc/mono/mono/external/corert/src/System.Private.CoreLib/src/System/Threading/Tasks/Task.cs:2247 at System.Threading.Tasks.Task`1<TResult_REF>.TrySetResult (TResult_REF) [0x0004f] in <79002cfb0e6e431d8465d6dcea08995e>:0 at System.Runtime.CompilerServices.AsyncTaskMethodBuilder`1<TResult_REF>.SetResult (TResult_REF) [0x0003d] in <79002cfb0e6e431d8465d6dcea08995e>:0 at Microsoft.Build.BackEnd.TaskBuilder/<ExecuteTask>d__13.MoveNext () [0x0021e] in <bdc5207a22bb42ae9fe3f3d07e82871e>:0 at System.Runtime.CompilerServices.AsyncMethodBuilderCore/MoveNextRunner.InvokeMoveNext (object) [0x00000] in /home/grendel/vc/mono/mono/mcs/class/referencesource/mscorlib/system/runtime/compilerservices/AsyncMethodBuilder.cs:1094 at System.Threading.ExecutionContext.RunInternal (System.Threading.ExecutionContext,System.Threading.ContextCallback,object,bool) [0x00071] in /home/grendel/vc/mono/mono/mcs/class/referencesource/mscorlib/system/threading/executioncontext.cs:961 at System.Threading.ExecutionContext.Run (System.Threading.ExecutionContext,System.Threading.ContextCallback,object,bool) [0x00000] in /home/grendel/vc/mono/mono/mcs/class/referencesource/mscorlib/system/threading/executioncontext.cs:908 at System.Runtime.CompilerServices.AsyncMethodBuilderCore/MoveNextRunner.Run () [0x00024] in /home/grendel/vc/mono/mono/mcs/class/referencesource/mscorlib/system/runtime/compilerservices/AsyncMethodBuilder.cs:1075 at System.Threading.Tasks.AwaitTaskContinuation.RunOrScheduleAction (System.Action,bool,System.Threading.Tasks.Task&) [0x0001a] in /home/grendel/vc/mono/mono/external/corert/src/System.Private.CoreLib/src/System/Threading/Tasks/TaskContinuation.cs:680 at System.Threading.Tasks.Task.FinishContinuations () [0x00052] in /home/grendel/vc/mono/mono/external/corert/src/System.Private.CoreLib/src/System/Threading/Tasks/Task.cs:3198 at System.Threading.Tasks.Task.FinishStageThree () [0x0003c] in /home/grendel/vc/mono/mono/external/corert/src/System.Private.CoreLib/src/System/Threading/Tasks/Task.cs:2247 at System.Threading.Tasks.Task`1<TResult_REF>.TrySetResult (TResult_REF) [0x0004f] in <79002cfb0e6e431d8465d6dcea08995e>:0 at System.Runtime.CompilerServices.AsyncTaskMethodBuilder`1<TResult_REF>.SetResult (TResult_REF) [0x0003d] in <79002cfb0e6e431d8465d6dcea08995e>:0 at Microsoft.Build.BackEnd.TaskBuilder/<ExecuteTask>d__18.MoveNext () [0x002be] in <bdc5207a22bb42ae9fe3f3d07e82871e>:0 at System.Runtime.CompilerServices.AsyncMethodBuilderCore/MoveNextRunner.InvokeMoveNext (object) [0x00000] in /home/grendel/vc/mono/mono/mcs/class/referencesource/mscorlib/system/runtime/compilerservices/AsyncMethodBuilder.cs:1094 at System.Threading.ExecutionContext.RunInternal (System.Threading.ExecutionContext,System.Threading.ContextCallback,object,bool) [0x00071] in /home/grendel/vc/mono/mono/mcs/class/referencesource/mscorlib/system/threading/executioncontext.cs:961 at System.Threading.ExecutionContext.Run (System.Threading.ExecutionContext,System.Threading.ContextCallback,object,bool) [0x00000] in /home/grendel/vc/mono/mono/mcs/class/referencesource/mscorlib/system/threading/executioncontext.cs:908 at System.Runtime.CompilerServices.AsyncMethodBuilderCore/MoveNextRunner.Run () [0x00024] in /home/grendel/vc/mono/mono/mcs/class/referencesource/mscorlib/system/runtime/compilerservices/AsyncMethodBuilder.cs:1075 at System.Threading.Tasks.AwaitTaskContinuation.RunOrScheduleAction (System.Action,bool,System.Threading.Tasks.Task&) [0x0001a] in /home/grendel/vc/mono/mono/external/corert/src/System.Private.CoreLib/src/System/Threading/Tasks/TaskContinuation.cs:680 at System.Threading.Tasks.Task.FinishContinuations () [0x00052] in /home/grendel/vc/mono/mono/external/corert/src/System.Private.CoreLib/src/System/Threading/Tasks/Task.cs:3198 at System.Threading.Tasks.Task.FinishStageThree () [0x0003c] in /home/grendel/vc/mono/mono/external/corert/src/System.Private.CoreLib/src/System/Threading/Tasks/Task.cs:2247 at System.Threading.Tasks.Task`1<TResult_REF>.TrySetResult (TResult_REF) [0x0004f] in <79002cfb0e6e431d8465d6dcea08995e>:0 at System.Runtime.CompilerServices.AsyncTaskMethodBuilder`1<TResult_REF>.SetResult (TResult_REF) [0x0003d] in <79002cfb0e6e431d8465d6dcea08995e>:0 at Microsoft.Build.BackEnd.TaskBuilder/<ExecuteBucket>d__19.MoveNext () [0x003e5] in <bdc5207a22bb42ae9fe3f3d07e82871e>:0 at System.Runtime.CompilerServices.AsyncMethodBuilderCore/MoveNextRunner.InvokeMoveNext (object) [0x00000] in /home/grendel/vc/mono/mono/mcs/class/referencesource/mscorlib/system/runtime/compilerservices/AsyncMethodBuilder.cs:1094 at System.Threading.ExecutionContext.RunInternal (System.Threading.ExecutionContext,System.Threading.ContextCallback,object,bool) [0x00071] in /home/grendel/vc/mono/mono/mcs/class/referencesource/mscorlib/system/threading/executioncontext.cs:961 at System.Threading.ExecutionContext.Run (System.Threading.ExecutionContext,System.Threading.ContextCallback,object,bool) [0x00000] in /home/grendel/vc/mono/mono/mcs/class/referencesource/mscorlib/system/threading/executioncontext.cs:908 at System.Runtime.CompilerServices.AsyncMethodBuilderCore/MoveNextRunner.Run () [0x00024] in /home/grendel/vc/mono/mono/mcs/class/referencesource/mscorlib/system/runtime/compilerservices/AsyncMethodBuilder.cs:1075 at System.Threading.Tasks.AwaitTaskContinuation.RunOrScheduleAction (System.Action,bool,System.Threading.Tasks.Task&) [0x0001a] in /home/grendel/vc/mono/mono/external/corert/src/System.Private.CoreLib/src/System/Threading/Tasks/TaskContinuation.cs:680 at System.Threading.Tasks.Task.FinishContinuations () [0x00052] in /home/grendel/vc/mono/mono/external/corert/src/System.Private.CoreLib/src/System/Threading/Tasks/Task.cs:3198 at System.Threading.Tasks.Task.FinishStageThree () [0x0003c] in /home/grendel/vc/mono/mono/external/corert/src/System.Private.CoreLib/src/System/Threading/Tasks/Task.cs:2247 at System.Threading.Tasks.Task`1<TResult_REF>.TrySetResult (TResult_REF) [0x0004f] in <79002cfb0e6e431d8465d6dcea08995e>:0 at System.Runtime.CompilerServices.AsyncTaskMethodBuilder`1<TResult_REF>.SetResult (TResult_REF) [0x0003d] in <79002cfb0e6e431d8465d6dcea08995e>:0 at Microsoft.Build.BackEnd.TaskBuilder/<InitializeAndExecuteTask>d__24.MoveNext () [0x0012d] in <bdc5207a22bb42ae9fe3f3d07e82871e>:0 at System.Runtime.CompilerServices.AsyncMethodBuilderCore/MoveNextRunner.InvokeMoveNext (object) [0x00000] in /home/grendel/vc/mono/mono/mcs/class/referencesource/mscorlib/system/runtime/compilerservices/AsyncMethodBuilder.cs:1094 at System.Threading.ExecutionContext.RunInternal (System.Threading.ExecutionContext,System.Threading.ContextCallback,object,bool) [0x00071] in /home/grendel/vc/mono/mono/mcs/class/referencesource/mscorlib/system/threading/executioncontext.cs:961 at System.Threading.ExecutionContext.Run (System.Threading.ExecutionContext,System.Threading.ContextCallback,object,bool) [0x00000] in /home/grendel/vc/mono/mono/mcs/class/referencesource/mscorlib/system/threading/executioncontext.cs:908 at System.Runtime.CompilerServices.AsyncMethodBuilderCore/MoveNextRunner.Run () [0x00024] in /home/grendel/vc/mono/mono/mcs/class/referencesource/mscorlib/system/runtime/compilerservices/AsyncMethodBuilder.cs:1075 at System.Threading.Tasks.AwaitTaskContinuation.RunOrScheduleAction (System.Action,bool,System.Threading.Tasks.Task&) [0x0001a] in /home/grendel/vc/mono/mono/external/corert/src/System.Private.CoreLib/src/System/Threading/Tasks/TaskContinuation.cs:680 at System.Threading.Tasks.Task.FinishContinuations () [0x00052] in /home/grendel/vc/mono/mono/external/corert/src/System.Private.CoreLib/src/System/Threading/Tasks/Task.cs:3198 at System.Threading.Tasks.Task.FinishStageThree () [0x0003c] in /home/grendel/vc/mono/mono/external/corert/src/System.Private.CoreLib/src/System/Threading/Tasks/Task.cs:2247 at System.Threading.Tasks.Task`1<TResult_REF>.TrySetResult (TResult_REF) [0x0004f] in <79002cfb0e6e431d8465d6dcea08995e>:0 at System.Runtime.CompilerServices.AsyncTaskMethodBuilder`1<TResult_REF>.SetResult (TResult_REF) [0x0003d] in <79002cfb0e6e431d8465d6dcea08995e>:0 at Microsoft.Build.BackEnd.TaskBuilder/<ExecuteInstantiatedTask>d__26.MoveNext () [0x0065e] in <bdc5207a22bb42ae9fe3f3d07e82871e>:0 at System.Runtime.CompilerServices.AsyncMethodBuilderCore/MoveNextRunner.InvokeMoveNext (object) [0x00000] in /home/grendel/vc/mono/mono/mcs/class/referencesource/mscorlib/system/runtime/compilerservices/AsyncMethodBuilder.cs:1094 at System.Threading.ExecutionContext.RunInternal (System.Threading.ExecutionContext,System.Threading.ContextCallback,object,bool) [0x00071] in /home/grendel/vc/mono/mono/mcs/class/referencesource/mscorlib/system/threading/executioncontext.cs:961 at System.Threading.ExecutionContext.Run (System.Threading.ExecutionContext,System.Threading.ContextCallback,object,bool) [0x00000] in /home/grendel/vc/mono/mono/mcs/class/referencesource/mscorlib/system/threading/executioncontext.cs:908 at System.Runtime.CompilerServices.AsyncMethodBuilderCore/MoveNextRunner.Run () [0x00024] in /home/grendel/vc/mono/mono/mcs/class/referencesource/mscorlib/system/runtime/compilerservices/AsyncMethodBuilder.cs:1075 at System.Threading.Tasks.AwaitTaskContinuation.RunOrScheduleAction (System.Action,bool,System.Threading.Tasks.Task&) [0x0001a] in /home/grendel/vc/mono/mono/external/corert/src/System.Private.CoreLib/src/System/Threading/Tasks/TaskContinuation.cs:680 at System.Threading.Tasks.Task.FinishContinuations () [0x00052] in /home/grendel/vc/mono/mono/external/corert/src/System.Private.CoreLib/src/System/Threading/Tasks/Task.cs:3198 at System.Threading.Tasks.Task.FinishStageThree () [0x0003c] in /home/grendel/vc/mono/mono/external/corert/src/System.Private.CoreLib/src/System/Threading/Tasks/Task.cs:2247 at System.Threading.Tasks.Task`1<bool>.TrySetResult (bool) [0x0004f] in /home/grendel/vc/mono/mono/external/corert/src/System.Private.CoreLib/src/System/Threading/Tasks/Future.cs:433 at System.Runtime.CompilerServices.AsyncTaskMethodBuilder`1<bool>.SetResult (bool) [0x0003d] in /home/grendel/vc/mono/mono/mcs/class/referencesource/mscorlib/system/runtime/compilerservices/AsyncMethodBuilder.cs:608 at Microsoft.Build.BackEnd.MSBuild/<ExecuteInternal>d__76.MoveNext () [0x004dd] in <bdc5207a22bb42ae9fe3f3d07e82871e>:0 at System.Runtime.CompilerServices.AsyncMethodBuilderCore/MoveNextRunner.InvokeMoveNext (object) [0x00000] in /home/grendel/vc/mono/mono/mcs/class/referencesource/mscorlib/system/runtime/compilerservices/AsyncMethodBuilder.cs:1094 at System.Threading.ExecutionContext.RunInternal (System.Threading.ExecutionContext,System.Threading.ContextCallback,object,bool) [0x00071] in /home/grendel/vc/mono/mono/mcs/class/referencesource/mscorlib/system/threading/executioncontext.cs:961 at System.Threading.ExecutionContext.Run (System.Threading.ExecutionContext,System.Threading.ContextCallback,object,bool) [0x00000] in /home/grendel/vc/mono/mono/mcs/class/referencesource/mscorlib/system/threading/executioncontext.cs:908 at System.Runtime.CompilerServices.AsyncMethodBuilderCore/MoveNextRunner.Run () [0x00024] in /home/grendel/vc/mono/mono/mcs/class/referencesource/mscorlib/system/runtime/compilerservices/AsyncMethodBuilder.cs:1075 at System.Threading.Tasks.AwaitTaskContinuation.RunOrScheduleAction (System.Action,bool,System.Threading.Tasks.Task&) [0x0001a] in /home/grendel/vc/mono/mono/external/corert/src/System.Private.CoreLib/src/System/Threading/Tasks/TaskContinuation.cs:680 at System.Threading.Tasks.Task.FinishContinuations () [0x00052] in /home/grendel/vc/mono/mono/external/corert/src/System.Private.CoreLib/src/System/Threading/Tasks/Task.cs:3198 at System.Threading.Tasks.Task.FinishStageThree () [0x0003c] in /home/grendel/vc/mono/mono/external/corert/src/System.Private.CoreLib/src/System/Threading/Tasks/Task.cs:2247 at System.Threading.Tasks.Task`1<bool>.TrySetResult (bool) [0x0004f] in /home/grendel/vc/mono/mono/external/corert/src/System.Private.CoreLib/src/System/Threading/Tasks/Future.cs:433 at System.Runtime.CompilerServices.AsyncTaskMethodBuilder`1<bool>.SetResult (bool) [0x0003d] in /home/grendel/vc/mono/mono/mcs/class/referencesource/mscorlib/system/runtime/compilerservices/AsyncMethodBuilder.cs:608 at Microsoft.Build.BackEnd.MSBuild/<BuildProjectsInParallel>d__77.MoveNext () [0x0014a] in <bdc5207a22bb42ae9fe3f3d07e82871e>:0 at System.Runtime.CompilerServices.AsyncMethodBuilderCore/MoveNextRunner.InvokeMoveNext (object) [0x00000] in /home/grendel/vc/mono/mono/mcs/class/referencesource/mscorlib/system/runtime/compilerservices/AsyncMethodBuilder.cs:1094 at System.Threading.ExecutionContext.RunInternal (System.Threading.ExecutionContext,System.Threading.ContextCallback,object,bool) [0x00071] in /home/grendel/vc/mono/mono/mcs/class/referencesource/mscorlib/system/threading/executioncontext.cs:961 at System.Threading.ExecutionContext.Run (System.Threading.ExecutionContext,System.Threading.ContextCallback,object,bool) [0x00000] in /home/grendel/vc/mono/mono/mcs/class/referencesource/mscorlib/system/threading/executioncontext.cs:908 at System.Runtime.CompilerServices.AsyncMethodBuilderCore/MoveNextRunner.Run () [0x00024] in /home/grendel/vc/mono/mono/mcs/class/referencesource/mscorlib/system/runtime/compilerservices/AsyncMethodBuilder.cs:1075 at System.Threading.Tasks.AwaitTaskContinuation.RunOrScheduleAction (System.Action,bool,System.Threading.Tasks.Task&) [0x0001a] in /home/grendel/vc/mono/mono/external/corert/src/System.Private.CoreLib/src/System/Threading/Tasks/TaskContinuation.cs:680 at System.Threading.Tasks.Task.FinishContinuations () [0x00052] in /home/grendel/vc/mono/mono/external/corert/src/System.Private.CoreLib/src/System/Threading/Tasks/Task.cs:3198 at System.Threading.Tasks.Task.FinishStageThree () [0x0003c] in /home/grendel/vc/mono/mono/external/corert/src/System.Private.CoreLib/src/System/Threading/Tasks/Task.cs:2247 at System.Threading.Tasks.Task`1<bool>.TrySetResult (bool) [0x0004f] in /home/grendel/vc/mono/mono/external/corert/src/System.Private.CoreLib/src/System/Threading/Tasks/Future.cs:433 at System.Runtime.CompilerServices.AsyncTaskMethodBuilder`1<bool>.SetResult (bool) [0x0003d] in /home/grendel/vc/mono/mono/mcs/class/referencesource/mscorlib/system/runtime/compilerservices/AsyncMethodBuilder.cs:608 at Microsoft.Build.BackEnd.MSBuild/<ExecuteTargets>d__80.MoveNext () [0x00713] in <bdc5207a22bb42ae9fe3f3d07e82871e>:0 at System.Runtime.CompilerServices.AsyncMethodBuilderCore/MoveNextRunner.InvokeMoveNext (object) [0x00000] in /home/grendel/vc/mono/mono/mcs/class/referencesource/mscorlib/system/runtime/compilerservices/AsyncMethodBuilder.cs:1094 at System.Threading.ExecutionContext.RunInternal (System.Threading.ExecutionContext,System.Threading.ContextCallback,object,bool) [0x00071] in /home/grendel/vc/mono/mono/mcs/class/referencesource/mscorlib/system/threading/executioncontext.cs:961 at System.Threading.ExecutionContext.Run (System.Threading.ExecutionContext,System.Threading.ContextCallback,object,bool) [0x00000] in /home/grendel/vc/mono/mono/mcs/class/referencesource/mscorlib/system/threading/executioncontext.cs:908 at System.Runtime.CompilerServices.AsyncMethodBuilderCore/MoveNextRunner.Run () [0x00024] in /home/grendel/vc/mono/mono/mcs/class/referencesource/mscorlib/system/runtime/compilerservices/AsyncMethodBuilder.cs:1075 at System.Threading.Tasks.AwaitTaskContinuation.RunOrScheduleAction (System.Action,bool,System.Threading.Tasks.Task&) [0x0001a] in /home/grendel/vc/mono/mono/external/corert/src/System.Private.CoreLib/src/System/Threading/Tasks/TaskContinuation.cs:680 at System.Threading.Tasks.Task.FinishContinuations () [0x00052] in /home/grendel/vc/mono/mono/external/corert/src/System.Private.CoreLib/src/System/Threading/Tasks/Task.cs:3198 at System.Threading.Tasks.Task.FinishStageThree () [0x0003c] in /home/grendel/vc/mono/mono/external/corert/src/System.Private.CoreLib/src/System/Threading/Tasks/Task.cs:2247 at System.Threading.Tasks.Task`1<Microsoft.Build.Framework.BuildEngineResult>.TrySetResult (Microsoft.Build.Framework.BuildEngineResult) [0x0004f] in /home/grendel/vc/mono/mono/external/corert/src/System.Private.CoreLib/src/System/Threading/Tasks/Future.cs:433 at System.Runtime.CompilerServices.AsyncTaskMethodBuilder`1<Microsoft.Build.Framework.BuildEngineResult>.SetResult (Microsoft.Build.Framework.BuildEngineResult) [0x0003d] in /home/grendel/vc/mono/mono/mcs/class/referencesource/mscorlib/system/runtime/compilerservices/AsyncMethodBuilder.cs:608 at Microsoft.Build.BackEnd.TaskHost/<InternalBuildProjects>d__49.MoveNext () [0x0025c] in <bdc5207a22bb42ae9fe3f3d07e82871e>:0 at System.Runtime.CompilerServices.AsyncMethodBuilderCore/MoveNextRunner.InvokeMoveNext (object) [0x00000] in /home/grendel/vc/mono/mono/mcs/class/referencesource/mscorlib/system/runtime/compilerservices/AsyncMethodBuilder.cs:1094 at System.Threading.ExecutionContext.RunInternal (System.Threading.ExecutionContext,System.Threading.ContextCallback,object,bool) [0x00071] in /home/grendel/vc/mono/mono/mcs/class/referencesource/mscorlib/system/threading/executioncontext.cs:961 at System.Threading.ExecutionContext.Run (System.Threading.ExecutionContext,System.Threading.ContextCallback,object,bool) [0x00000] in /home/grendel/vc/mono/mono/mcs/class/referencesource/mscorlib/system/threading/executioncontext.cs:908 at System.Runtime.CompilerServices.AsyncMethodBuilderCore/MoveNextRunner.Run () [0x00024] in /home/grendel/vc/mono/mono/mcs/class/referencesource/mscorlib/system/runtime/compilerservices/AsyncMethodBuilder.cs:1075 at System.Threading.Tasks.AwaitTaskContinuation.RunOrScheduleAction (System.Action,bool,System.Threading.Tasks.Task&) [0x0001a] in /home/grendel/vc/mono/mono/external/corert/src/System.Private.CoreLib/src/System/Threading/Tasks/TaskContinuation.cs:680 at System.Threading.Tasks.Task.FinishContinuations () [0x00052] in /home/grendel/vc/mono/mono/external/corert/src/System.Private.CoreLib/src/System/Threading/Tasks/Task.cs:3198 at System.Threading.Tasks.Task.FinishStageThree () [0x0003c] in /home/grendel/vc/mono/mono/external/corert/src/System.Private.CoreLib/src/System/Threading/Tasks/Task.cs:2247 at System.Threading.Tasks.Task`1<Microsoft.Build.Framework.BuildEngineResult>.TrySetResult (Microsoft.Build.Framework.BuildEngineResult) [0x0004f] in /home/grendel/vc/mono/mono/external/corert/src/System.Private.CoreLib/src/System/Threading/Tasks/Future.cs:433 at System.Runtime.CompilerServices.AsyncTaskMethodBuilder`1<Microsoft.Build.Framework.BuildEngineResult>.SetResult (Microsoft.Build.Framework.BuildEngineResult) [0x0003d] in /home/grendel/vc/mono/mono/mcs/class/referencesource/mscorlib/system/runtime/compilerservices/AsyncMethodBuilder.cs:608 at Microsoft.Build.BackEnd.TaskHost/<BuildProjectFilesInParallelAsync>d__53.MoveNext () [0x004fb] in <bdc5207a22bb42ae9fe3f3d07e82871e>:0 at System.Runtime.CompilerServices.AsyncMethodBuilderCore/MoveNextRunner.InvokeMoveNext (object) [0x00000] in /home/grendel/vc/mono/mono/mcs/class/referencesource/mscorlib/system/runtime/compilerservices/AsyncMethodBuilder.cs:1094 at System.Threading.ExecutionContext.RunInternal (System.Threading.ExecutionContext,System.Threading.ContextCallback,object,bool) [0x00071] in /home/grendel/vc/mono/mono/mcs/class/referencesource/mscorlib/system/threading/executioncontext.cs:961 at System.Threading.ExecutionContext.Run (System.Threading.ExecutionContext,System.Threading.ContextCallback,object,bool) [0x00000] in /home/grendel/vc/mono/mono/mcs/class/referencesource/mscorlib/system/threading/executioncontext.cs:908 at System.Runtime.CompilerServices.AsyncMethodBuilderCore/MoveNextRunner.Run () [0x00024] in /home/grendel/vc/mono/mono/mcs/class/referencesource/mscorlib/system/runtime/compilerservices/AsyncMethodBuilder.cs:1075 at System.Threading.Tasks.AwaitTaskContinuation.RunOrScheduleAction (System.Action,bool,System.Threading.Tasks.Task&) [0x0001a] in /home/grendel/vc/mono/mono/external/corert/src/System.Private.CoreLib/src/System/Threading/Tasks/TaskContinuation.cs:680 at System.Threading.Tasks.Task.FinishContinuations () [0x00052] in /home/grendel/vc/mono/mono/external/corert/src/System.Private.CoreLib/src/System/Threading/Tasks/Task.cs:3198 at System.Threading.Tasks.Task.FinishStageThree () [0x0003c] in /home/grendel/vc/mono/mono/external/corert/src/System.Private.CoreLib/src/System/Threading/Tasks/Task.cs:2247 at System.Threading.Tasks.Task`1<TResult_REF>.TrySetResult (TResult_REF) [0x0004f] in <79002cfb0e6e431d8465d6dcea08995e>:0 at System.Runtime.CompilerServices.AsyncTaskMethodBuilder`1<TResult_REF>.SetResult (TResult_REF) [0x0003d] in <79002cfb0e6e431d8465d6dcea08995e>:0 at Microsoft.Build.BackEnd.RequestBuilder/<BuildProjects>d__33.MoveNext () [0x00263] in <bdc5207a22bb42ae9fe3f3d07e82871e>:0 at System.Runtime.CompilerServices.AsyncMethodBuilderCore/MoveNextRunner.InvokeMoveNext (object) [0x00000] in /home/grendel/vc/mono/mono/mcs/class/referencesource/mscorlib/system/runtime/compilerservices/AsyncMethodBuilder.cs:1094 at System.Threading.ExecutionContext.RunInternal (System.Threading.ExecutionContext,System.Threading.ContextCallback,object,bool) [0x00071] in /home/grendel/vc/mono/mono/mcs/class/referencesource/mscorlib/system/threading/executioncontext.cs:961 at System.Threading.ExecutionContext.Run (System.Threading.ExecutionContext,System.Threading.ContextCallback,object,bool) [0x00000] in /home/grendel/vc/mono/mono/mcs/class/referencesource/mscorlib/system/threading/executioncontext.cs:908 at System.Runtime.CompilerServices.AsyncMethodBuilderCore/MoveNextRunner.Run () [0x00024] in /home/grendel/vc/mono/mono/mcs/class/referencesource/mscorlib/system/runtime/compilerservices/AsyncMethodBuilder.cs:1075 at System.Threading.Tasks.AwaitTaskContinuation.RunOrScheduleAction (System.Action,bool,System.Threading.Tasks.Task&) [0x0001a] in /home/grendel/vc/mono/mono/external/corert/src/System.Private.CoreLib/src/System/Threading/Tasks/TaskContinuation.cs:680 at System.Threading.Tasks.Task.FinishContinuations () [0x00052] in /home/grendel/vc/mono/mono/external/corert/src/System.Private.CoreLib/src/System/Threading/Tasks/Task.cs:3198 at System.Threading.Tasks.Task.FinishStageThree () [0x0003c] in /home/grendel/vc/mono/mono/external/corert/src/System.Private.CoreLib/src/System/Threading/Tasks/Task.cs:2247 at System.Threading.Tasks.Task`1<TResult_REF>.TrySetResult (TResult_REF) [0x0004f] in <79002cfb0e6e431d8465d6dcea08995e>:0 at System.Runtime.CompilerServices.AsyncTaskMethodBuilder`1<TResult_REF>.SetResult (TResult_REF) [0x0003d] in <79002cfb0e6e431d8465d6dcea08995e>:0 at Microsoft.Build.BackEnd.RequestBuilder/<StartNewBuildRequests>d__51.MoveNext () [0x0020e] in <bdc5207a22bb42ae9fe3f3d07e82871e>:0 at System.Runtime.CompilerServices.AsyncMethodBuilderCore/MoveNextRunner.InvokeMoveNext (object) [0x00000] in /home/grendel/vc/mono/mono/mcs/class/referencesource/mscorlib/system/runtime/compilerservices/AsyncMethodBuilder.cs:1094 at System.Threading.ExecutionContext.RunInternal (System.Threading.ExecutionContext,System.Threading.ContextCallback,object,bool) [0x00071] in /home/grendel/vc/mono/mono/mcs/class/referencesource/mscorlib/system/threading/executioncontext.cs:961 at System.Threading.ExecutionContext.Run (System.Threading.ExecutionContext,System.Threading.ContextCallback,object,bool) [0x00000] in /home/grendel/vc/mono/mono/mcs/class/referencesource/mscorlib/system/threading/executioncontext.cs:908 at System.Runtime.CompilerServices.AsyncMethodBuilderCore/MoveNextRunner.Run () [0x00024] in /home/grendel/vc/mono/mono/mcs/class/referencesource/mscorlib/system/runtime/compilerservices/AsyncMethodBuilder.cs:1075 at System.Threading.Tasks.AwaitTaskContinuation.RunOrScheduleAction (System.Action,bool,System.Threading.Tasks.Task&) [0x0001a] in /home/grendel/vc/mono/mono/external/corert/src/System.Private.CoreLib/src/System/Threading/Tasks/TaskContinuation.cs:680 at System.Threading.Tasks.Task.FinishContinuations () [0x00052] in /home/grendel/vc/mono/mono/external/corert/src/System.Private.CoreLib/src/System/Threading/Tasks/Task.cs:3198 at System.Threading.Tasks.Task.FinishStageThree () [0x0003c] in /home/grendel/vc/mono/mono/external/corert/src/System.Private.CoreLib/src/System/Threading/Tasks/Task.cs:2247 at System.Threading.Tasks.Task`1<int>.TrySetResult (int) [0x0004f] in /home/grendel/vc/mono/mono/external/corert/src/System.Private.CoreLib/src/System/Threading/Tasks/Future.cs:433 at System.Threading.Tasks.TaskCompletionSource`1<int>.TrySetResult (int) [0x00000] in /home/grendel/vc/mono/mono/external/corefx/src/Common/src/CoreLib/System/Threading/Tasks/TaskCompletionSource.cs:274 at Microsoft.Build.Shared.AwaitExtensions/<>c__DisplayClass7_2.<ToTask>b__0 (object,bool) [0x00038] in <bdc5207a22bb42ae9fe3f3d07e82871e>:0 at System.Threading.RegisteredWaitHandle.DoCallBack (object) [0x00008] in /home/grendel/vc/mono/mono/mcs/class/corlib/System.Threading/RegisteredWaitHandle.cs:103 at System.Threading.QueueUserWorkItemCallback.WaitCallback_Context (object) [0x0000d] in /home/grendel/vc/mono/mono/mcs/class/referencesource/mscorlib/system/threading/threadpool.cs:1308 at System.Threading.ExecutionContext.RunInternal (System.Threading.ExecutionContext,System.Threading.ContextCallback,object,bool) [0x00071] in /home/grendel/vc/mono/mono/mcs/class/referencesource/mscorlib/system/threading/executioncontext.cs:961 at System.Threading.ExecutionContext.Run (System.Threading.ExecutionContext,System.Threading.ContextCallback,object,bool) [0x00000] in /home/grendel/vc/mono/mono/mcs/class/referencesource/mscorlib/system/threading/executioncontext.cs:908 at System.Threading.QueueUserWorkItemCallback.System.Threading.IThreadPoolWorkItem.ExecuteWorkItem () [0x00021] in /home/grendel/vc/mono/mono/mcs/class/referencesource/mscorlib/system/threading/threadpool.cs:1285 at System.Threading.ThreadPoolWorkQueue.Dispatch () [0x00074] in /home/grendel/vc/mono/mono/mcs/class/referencesource/mscorlib/system/threading/threadpool.cs:858 at System.Threading._ThreadPoolWaitCallback.PerformWaitCallback () [0x00000] in /home/grendel/vc/mono/mono/mcs/class/referencesource/mscorlib/system/threading/threadpool.cs:1213 at (wrapper runtime-invoke) <Module>.runtime_invoke_bool (object,intptr,intptr,intptr) [0x0001f] in <79002cfb0e6e431d8465d6dcea08995e>:0 The crash occurs in frame 7, because the `r` parameter (an instance of the `MonoAssembly` structure) contains pointers that used to point to valid places in the `Xamarin.Android.Build.Tasks` assembbly's mmaped area, but now point to garbage data. One of those corrupted pointers is the ASCII assembly name - which is used by the function in frame 7. The situation can be detected by the runtime by using advisory locks and reporting the attempt to overwrite the mmapped area, however a fix would require creating a copy of all the assembly's in-memory data before the write is allowed and that might be too expensive. None of those measures are currently implemented by Mono (and it isn't sure if any of them will ever be implemented). The crash this commit fixes occurs in a very specific scenario - when building the `OpenTK.csproj` project *directly* (that is passing it as parameter to `msbuild`), which causes a the `Xamarin.Android.Build.Tasks` assembly to be loaded for use in the `<UsingTask/>` msbuild statement, but at the same time `OpenTK.csproj` references the `Xamarin.Android.Build.Tasks` *project* which causes the ILRepacker task to run unconditionally, attempting to repack the assemblies again and leading to the crash described above. The fix, courtesy of @jonpryor, is to make the ILRepacker target not run every time but only whenver the assembly has to be re-packed because it has just been rebuilt.
radekdoulik
added a commit
to radekdoulik/xamarin-android
that referenced
this pull request
Nov 7, 2018
https://github.com/xamarin/xamarin-android/pull/2019/files introduced a crash in our XForms test, it crashes in the middle of the startup. It looks like we need to preserve also android.support.v7.view.** classes as well. This is the logcat output of the crash: E AndroidRuntime: FATAL EXCEPTION: main E AndroidRuntime: Process: Xamarin.Forms_Performance_Integration, PID: 8563 E AndroidRuntime: java.lang.RuntimeException: Unable to start activity ComponentInfo{Xamarin.Forms_Performance_Integration/xamarin.forms.performance.integration.MainActivity}: android.view.InflateException: Binary XML file line dotnet#17: Binary XML file line dotnet#17: Error inflating class android.support.v7.view.menu.ActionMenuItemView E AndroidRuntime: at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2913) E AndroidRuntime: at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:3048) E AndroidRuntime: at android.app.servertransaction.LaunchActivityItem.execute(LaunchActivityItem.java:78) E AndroidRuntime: at android.app.servertransaction.TransactionExecutor.executeCallbacks(TransactionExecutor.java:108) E AndroidRuntime: at android.app.servertransaction.TransactionExecutor.execute(TransactionExecutor.java:68) E AndroidRuntime: at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1808) E AndroidRuntime: at android.os.Handler.dispatchMessage(Handler.java:106) E AndroidRuntime: at android.os.Looper.loop(Looper.java:193) E AndroidRuntime: at android.app.ActivityThread.main(ActivityThread.java:6669) E AndroidRuntime: at java.lang.reflect.Method.invoke(Native Method) E AndroidRuntime: at com.android.internal.os.RuntimeInit$MethodAndArgsCaller.run(RuntimeInit.java:493) E AndroidRuntime: at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:858) E AndroidRuntime: Caused by: android.view.InflateException: Binary XML file line dotnet#17: Binary XML file line dotnet#17: Error inflating class android.support.v7.view.menu.ActionMenuItemView E AndroidRuntime: Caused by: android.view.InflateException: Binary XML file line dotnet#17: Error inflating class android.support.v7.view.menu.ActionMenuItemView E AndroidRuntime: Caused by: java.lang.NoSuchMethodException: <init> [class android.content.Context, interface android.util.AttributeSet] E AndroidRuntime: at java.lang.Class.getConstructor0(Class.java:2327) E AndroidRuntime: at java.lang.Class.getConstructor(Class.java:1725) E AndroidRuntime: at android.view.LayoutInflater.createView(LayoutInflater.java:615) E AndroidRuntime: at android.view.LayoutInflater.createViewFromTag(LayoutInflater.java:790) E AndroidRuntime: at android.view.LayoutInflater.createViewFromTag(LayoutInflater.java:730) E AndroidRuntime: at android.view.LayoutInflater.inflate(LayoutInflater.java:492) E AndroidRuntime: at android.view.LayoutInflater.inflate(LayoutInflater.java:423) E AndroidRuntime: at android.support.v7.view.menu.BaseMenuPresenter.createItemView(:1) E AndroidRuntime: at android.support.v7.view.menu.BaseMenuPresenter.getItemView(:3) E AndroidRuntime: at android.support.v7.widget.ActionMenuPresenter.getItemView(:3) E AndroidRuntime: at android.support.v7.widget.ActionMenuPresenter.flagActionItems(:21) E AndroidRuntime: at android.support.v7.view.menu.MenuBuilder.flagActionItems(:6) E AndroidRuntime: at android.support.v7.view.menu.BaseMenuPresenter.updateMenuView(:3) E AndroidRuntime: at android.support.v7.widget.ActionMenuPresenter.updateMenuView(:1) E AndroidRuntime: at android.support.v7.view.menu.MenuBuilder.dispatchPresenterUpdate(:6) E AndroidRuntime: at android.support.v7.view.menu.MenuBuilder.onItemsChanged(:4) E AndroidRuntime: at android.support.v7.view.menu.MenuBuilder.onItemActionRequestChanged(:2) E AndroidRuntime: at android.support.v7.view.menu.MenuItemImpl.setShowAsAction(:3) E AndroidRuntime: at xamarin.forms.performance.integration.MainActivity.n_onCreate(Native Method) E AndroidRuntime: at xamarin.forms.performance.integration.MainActivity.onCreate(:1) E AndroidRuntime: at android.app.Activity.performCreate(Activity.java:7136) E AndroidRuntime: at android.app.Activity.performCreate(Activity.java:7127) E AndroidRuntime: at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1271) E AndroidRuntime: at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2893) E AndroidRuntime: at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:3048) E AndroidRuntime: at android.app.servertransaction.LaunchActivityItem.execute(LaunchActivityItem.java:78) E AndroidRuntime: at android.app.servertransaction.TransactionExecutor.executeCallbacks(TransactionExecutor.java:108) E AndroidRuntime: at android.app.servertransaction.TransactionExecutor.execute(TransactionExecutor.java:68) E AndroidRuntime: at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1808) E AndroidRuntime: at android.os.Handler.dispatchMessage(Handler.java:106) E AndroidRuntime: at android.os.Looper.loop(Looper.java:193) E AndroidRuntime: at android.app.ActivityThread.main(ActivityThread.java:6669) E AndroidRuntime: at java.lang.reflect.Method.invoke(Native Method) E AndroidRuntime: at com.android.internal.os.RuntimeInit$MethodAndArgsCaller.run(RuntimeInit.java:493) E AndroidRuntime: at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:858) W ActivityManager: Force finishing activity Xamarin.Forms_Performance_Integration/xamarin.forms.performance.integration.MainActivity
jonpryor
pushed a commit
that referenced
this pull request
Nov 7, 2018
Commit 4bb4b2e introduced a crash in our `Xamarin.Forms-Performance-Integration` test, crashing in the middle of app startup, because the r8 linker is enabled. The same happens when ProGuard is enabled in Xamarin.Forms apps; see also: xamarin/Xamarin.Forms#2709 It looks like we need to preserve the `android.support.v7.view.**` classes to avoid the crash. E AndroidRuntime: FATAL EXCEPTION: main E AndroidRuntime: Process: Xamarin.Forms_Performance_Integration, PID: 8563 E AndroidRuntime: java.lang.RuntimeException: Unable to start activity ComponentInfo{Xamarin.Forms_Performance_Integration/xamarin.forms.performance.integration.MainActivity}: android.view.InflateException: Binary XML file line #17: Binary XML file line #17: Error inflating class android.support.v7.view.menu.ActionMenuItemView E AndroidRuntime: at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2913) E AndroidRuntime: at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:3048) E AndroidRuntime: at android.app.servertransaction.LaunchActivityItem.execute(LaunchActivityItem.java:78) E AndroidRuntime: at android.app.servertransaction.TransactionExecutor.executeCallbacks(TransactionExecutor.java:108) E AndroidRuntime: at android.app.servertransaction.TransactionExecutor.execute(TransactionExecutor.java:68) E AndroidRuntime: at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1808) E AndroidRuntime: at android.os.Handler.dispatchMessage(Handler.java:106) E AndroidRuntime: at android.os.Looper.loop(Looper.java:193) E AndroidRuntime: at android.app.ActivityThread.main(ActivityThread.java:6669) E AndroidRuntime: at java.lang.reflect.Method.invoke(Native Method) E AndroidRuntime: at com.android.internal.os.RuntimeInit$MethodAndArgsCaller.run(RuntimeInit.java:493) E AndroidRuntime: at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:858) E AndroidRuntime: Caused by: android.view.InflateException: Binary XML file line #17: Binary XML file line #17: Error inflating class android.support.v7.view.menu.ActionMenuItemView E AndroidRuntime: Caused by: android.view.InflateException: Binary XML file line #17: Error inflating class android.support.v7.view.menu.ActionMenuItemView E AndroidRuntime: Caused by: java.lang.NoSuchMethodException: <init> [class android.content.Context, interface android.util.AttributeSet] E AndroidRuntime: at java.lang.Class.getConstructor0(Class.java:2327) E AndroidRuntime: at java.lang.Class.getConstructor(Class.java:1725) E AndroidRuntime: at android.view.LayoutInflater.createView(LayoutInflater.java:615) E AndroidRuntime: at android.view.LayoutInflater.createViewFromTag(LayoutInflater.java:790) E AndroidRuntime: at android.view.LayoutInflater.createViewFromTag(LayoutInflater.java:730) E AndroidRuntime: at android.view.LayoutInflater.inflate(LayoutInflater.java:492) E AndroidRuntime: at android.view.LayoutInflater.inflate(LayoutInflater.java:423) E AndroidRuntime: at android.support.v7.view.menu.BaseMenuPresenter.createItemView(:1) E AndroidRuntime: at android.support.v7.view.menu.BaseMenuPresenter.getItemView(:3) E AndroidRuntime: at android.support.v7.widget.ActionMenuPresenter.getItemView(:3) E AndroidRuntime: at android.support.v7.widget.ActionMenuPresenter.flagActionItems(:21) E AndroidRuntime: at android.support.v7.view.menu.MenuBuilder.flagActionItems(:6) E AndroidRuntime: at android.support.v7.view.menu.BaseMenuPresenter.updateMenuView(:3) E AndroidRuntime: at android.support.v7.widget.ActionMenuPresenter.updateMenuView(:1) E AndroidRuntime: at android.support.v7.view.menu.MenuBuilder.dispatchPresenterUpdate(:6) E AndroidRuntime: at android.support.v7.view.menu.MenuBuilder.onItemsChanged(:4) E AndroidRuntime: at android.support.v7.view.menu.MenuBuilder.onItemActionRequestChanged(:2) E AndroidRuntime: at android.support.v7.view.menu.MenuItemImpl.setShowAsAction(:3) E AndroidRuntime: at xamarin.forms.performance.integration.MainActivity.n_onCreate(Native Method) E AndroidRuntime: at xamarin.forms.performance.integration.MainActivity.onCreate(:1) E AndroidRuntime: at android.app.Activity.performCreate(Activity.java:7136) E AndroidRuntime: at android.app.Activity.performCreate(Activity.java:7127) E AndroidRuntime: at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1271) E AndroidRuntime: at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2893) E AndroidRuntime: at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:3048) E AndroidRuntime: at android.app.servertransaction.LaunchActivityItem.execute(LaunchActivityItem.java:78) E AndroidRuntime: at android.app.servertransaction.TransactionExecutor.executeCallbacks(TransactionExecutor.java:108) E AndroidRuntime: at android.app.servertransaction.TransactionExecutor.execute(TransactionExecutor.java:68) E AndroidRuntime: at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1808) E AndroidRuntime: at android.os.Handler.dispatchMessage(Handler.java:106) E AndroidRuntime: at android.os.Looper.loop(Looper.java:193) E AndroidRuntime: at android.app.ActivityThread.main(ActivityThread.java:6669) E AndroidRuntime: at java.lang.reflect.Method.invoke(Native Method) E AndroidRuntime: at com.android.internal.os.RuntimeInit$MethodAndArgsCaller.run(RuntimeInit.java:493) E AndroidRuntime: at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:858) W ActivityManager: Force finishing activity Xamarin.Forms_Performance_Integration/xamarin.forms.performance.integration.MainActivity
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Make build more verbose, should detailed information be needed and make sure it doesn't break if target files exist when unzipping SDK/NDK/etc