VS 2015 `System.OutOfMemoryException` while editing

[NoelAbrahams]

Hi,

Version: VS 2015 RC, TS 1.5 Beta, no modifications.

I ran into this while editing a code file. I cannot remember the actual context, but there was nothing unusual. I believe this is the first time I've run into this particular problem.

  <entry>
    <record>14729</record>
    <time>2015/05/11 18:21:33.332</time>
    <type>Error</type>
    <source>Editor or Editor Extension</source>
    <description>System.OutOfMemoryException: Exception of type &apos;System.OutOfMemoryException&apos; was thrown.&#x000D;&#x000A;   at Microsoft.VisualStudio.Text.ChangeTagger.Implementation.BinaryChangeSpan.ChangedSpans(Span span)&#x000D;&#x000A;   at Microsoft.VisualStudio.Text.ChangeTagger.Implementation.BinaryChangeSpan.&lt;ChangedSpans&gt;d__1.MoveNext()&#x000D;&#x000A;   at Microsoft.VisualStudio.Text.ChangeTagger.Implementation.BinaryChangeSpan.&lt;ChangedSpans&gt;d__1.MoveNext()&#x000D;&#x000A;   at Microsoft.VisualStudio.Text.ChangeTagger.Implementation.BinaryChangeSpan.&lt;ChangedSpans&gt;d__1.MoveNext()&#x000D;&#x000A;   at Microsoft.VisualStudio.Text.ChangeTagger.Implementation.ChangeTagger.&lt;MergeChanges&gt;d__1.MoveNext()&#x000D;&#x000A;   at Microsoft.VisualStudio.Text.ChangeTagger.Implementation.ChangeTagger.&lt;GetTags&gt;d__1.MoveNext()&#x000D;&#x000A;   at Microsoft.VisualStudio.Text.Tagging.Implementation.TagAggregator`1.&lt;GetTagsForBuffer&gt;d__1.MoveNext()</description>
  </entry>

Log Name:      Application
Source:        Windows Error Reporting
Date:          11/05/2015 19:22:13
Event ID:      1001
Task Category: None
Level:         Information
Keywords:      Classic
User:          N/A
Computer:      Noel-PC
Description:
Fault bucket 94729517350, type 5
Event Name: CLR20r3
Response: Not available
Cab Id: 0

Problem signature:
P1: devenv.exe
P2: 14.0.22823.1
P3: 5538ad9e
P4: mscorlib
P5: 4.6.57.0
P6: 551b8848
P7: 3ff
P8: 61
P9: System.OutOfMemoryException
P10: 

Attached files:
C:\Temp\WER5980.tmp.WERInternalMetadata.xml
C:\Temp\WER6519.tmp.appcompat.txt
C:\Temp\WER6E71.tmp.dmp
C:\Temp\WERBFCE.tmp.WERDataCollectionFailure.txt

These files may be available here:
C:\Users\Noel\AppData\Local\Microsoft\Windows\WER\ReportArchive\AppCrash_devenv.exe_405bdc6fd3bb7277887ed7edeaff535f9e74a_c39a737b_1cb0cd96

Analysis symbol: 
Rechecking for solution: 0
Report ID: 91aabfe3-f80a-11e4-bebb-00248c4ba44d
Report Status: 4104
Hashed bucket: 2d0f75aebe2473c0d3d2e9fa84d9207a
Event Xml:
<Event xmlns="http://schemas.microsoft.com/win/2004/08/events/event">
  <System>
    <Provider Name="Windows Error Reporting" />
    <EventID Qualifiers="0">1001</EventID>
    <Level>4</Level>
    <Task>0</Task>
    <Keywords>0x80000000000000</Keywords>
    <TimeCreated SystemTime="2015-05-11T18:22:13.000000000Z" />
    <EventRecordID>1295731</EventRecordID>
    <Channel>Application</Channel>
    <Computer>Noel-PC</Computer>
    <Security />
  </System>
  <EventData>
    <Data>94729517350</Data>
    <Data>5</Data>
    <Data>CLR20r3</Data>
    <Data>Not available</Data>
    <Data>0</Data>
    <Data>devenv.exe</Data>
    <Data>14.0.22823.1</Data>
    <Data>5538ad9e</Data>
    <Data>mscorlib</Data>
    <Data>4.6.57.0</Data>
    <Data>551b8848</Data>
    <Data>3ff</Data>
    <Data>61</Data>
    <Data>System.OutOfMemoryException</Data>
    <Data>
    </Data>
    <Data>
C:\Temp\WER5980.tmp.WERInternalMetadata.xml
C:\Temp\WER6519.tmp.appcompat.txt
C:\Temp\WER6E71.tmp.dmp
C:\Temp\WERBFCE.tmp.WERDataCollectionFailure.txt</Data>
    <Data>C:\Users\Noel\AppData\Local\Microsoft\Windows\WER\ReportArchive\AppCrash_devenv.exe_405bdc6fd3bb7277887ed7edeaff535f9e74a_c39a737b_1cb0cd96</Data>
    <Data>
    </Data>
    <Data>0</Data>
    <Data>91aabfe3-f80a-11e4-bebb-00248c4ba44d</Data>
    <Data>4104</Data>
    <Data>2d0f75aebe2473c0d3d2e9fa84d9207a</Data>
  </EventData>
</Event>

Log Name:      Application
Source:        Application Error
Date:          11/05/2015 19:21:41
Event ID:      1000
Task Category: (100)
Level:         Error
Keywords:      Classic
User:          N/A
Computer:      Noel-PC
Description:
Faulting application name: devenv.exe, version: 14.0.22823.1, time stamp: 0x5538ad9e
Faulting module name: unknown, version: 0.0.0.0, time stamp: 0x00000000
Exception code: 0x80131623
Fault offset: 0x8cd75676
Faulting process ID: 0x1404
Faulting application start time: 0x01d08bcb2ddb83b0
Faulting application path: C:\Program Files (x86)\Microsoft Visual Studio 14.0\Common7\IDE\devenv.exe
Faulting module path: unknown
Report ID: 91aabfe3-f80a-11e4-bebb-00248c4ba44d
Faulting package full name: 
Faulting package-relative application ID: 
Event Xml:
<Event xmlns="http://schemas.microsoft.com/win/2004/08/events/event">
  <System>
    <Provider Name="Application Error" />
    <EventID Qualifiers="0">1000</EventID>
    <Level>2</Level>
    <Task>100</Task>
    <Keywords>0x80000000000000</Keywords>
    <TimeCreated SystemTime="2015-05-11T18:21:41.000000000Z" />
    <EventRecordID>1295730</EventRecordID>
    <Channel>Application</Channel>
    <Computer>Noel-PC</Computer>
    <Security />
  </System>
  <EventData>
    <Data>devenv.exe</Data>
    <Data>14.0.22823.1</Data>
    <Data>5538ad9e</Data>
    <Data>unknown</Data>
    <Data>0.0.0.0</Data>
    <Data>00000000</Data>
    <Data>80131623</Data>
    <Data>8cd75676</Data>
    <Data>1404</Data>
    <Data>01d08bcb2ddb83b0</Data>
    <Data>C:\Program Files (x86)\Microsoft Visual Studio 14.0\Common7\IDE\devenv.exe</Data>
    <Data>unknown</Data>
    <Data>91aabfe3-f80a-11e4-bebb-00248c4ba44d</Data>
    <Data>
    </Data>
    <Data>
    </Data>
  </EventData>
</Event>

Log Name:      Application
Source:        .NET Runtime
Date:          11/05/2015 19:21:36
Event ID:      1025
Task Category: None
Level:         Error
Keywords:      Classic
User:          N/A
Computer:      Noel-PC
Description:
Application: devenv.exe
Framework Version: v4.0.30319
Description: The application requested process termination through System.Environment.FailFast(string message).
Message: System.AggregateException: One or more errors occurred. ---> System.AggregateException: One or more errors occurred. ---> System.OutOfMemoryException: Exception of type 'System.OutOfMemoryException' was thrown.
   at System.String.CtorCharArrayStartLength(Char[] value, Int32 startIndex, Int32 length)
   at Microsoft.VisualStudio.Text.Implementation.SimpleTextStorageLoader.<DoLoad>d__1.MoveNext()
   at Microsoft.VisualStudio.Text.Implementation.SimpleStringRebuilder.Create(ITextStorageLoader loader)
   at Microsoft.VisualStudio.Text.Implementation.BufferFactoryService.CreateTextBuffer(TextReader reader, IContentType contentType, Int64 length, String traceId)
   at Microsoft.VisualStudio.Text.Implementation.BufferFactoryService.CreateTextBuffer(TextReader reader, IContentType contentType)
   at Microsoft.CodeAnalysis.Editor.Implementation.Workspaces.EditorTextFactoryService.CreateText(TextReader reader, Encoding encoding, CancellationToken cancellationToken)
   at Microsoft.CodeAnalysis.Host.TemporaryStorageServiceFactory.TemporaryStorageService.TemporaryTextStorage.ReadText(CancellationToken cancellationToken)
   at Microsoft.CodeAnalysis.Host.TemporaryStorageServiceFactory.TemporaryStorageService.TemporaryTextStorage.<>c__DisplayClass6_0.<ReadTextAsync>b__0()
   at System.Threading.Tasks.Task`1.InnerInvoke()
   at System.Threading.Tasks.Task.Execute()
--- End of stack trace from previous location where exception was thrown ---
   at System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess(Task task)
   at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)
   at Microsoft.CodeAnalysis.RecoverableTextAndVersion.<RecoverAsync>d__6.MoveNext()
   --- End of inner exception stack trace ---
   at System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess(Task task)
   at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)
   at Microsoft.CodeAnalysis.Host.RecoverableCachedObjectSource`1.<GetValueAsync>d__16.MoveNext()
--- End of stack trace from previous location where exception was thrown ---
   at System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess(Task task)
   at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)
   at Microsoft.CodeAnalysis.TextDocumentState.<GetTextAsync>d__22.MoveNext()
--- End of stack trace from previous location where exception was thrown ---
   at System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess(Task task)
   at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)
   at Microsoft.CodeAnalysis.Editor.TypeScript.Features.ProjectDataCache.<GetCacheAsync>d__1.MoveNext()
--- End of stack trace from previous location where exception was thrown ---
   at System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess(Task task)
   at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)
   at Microsoft.CodeAnalysis.Editor.TypeScript.Features.TaskHandler.<PerformSemanticFeatureOperationAsync>d__1`1.MoveNext()
--- End of stack trace from previous location where exception was thrown ---
   at System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess(Task task)
   at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)
   at System.Runtime.CompilerServices.TaskAwaiter.ValidateEnd(Task task)
   at Microsoft.CodeAnalysis.Completion.AbstractCompletionService.<GetGroupsAsync>d__13.MoveNext()
--- End of stack trace from previous location where exception was thrown ---
   at System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess(Task task)
   at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)
   at Microsoft.CodeAnalysis.Completion.AbstractCompletionService.<GetGroupsAsync>d__10.MoveNext()
--- End of stack trace from previous location where exception was thrown ---
   at System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess(Task task)
   at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)
   at Microsoft.CodeAnalysis.Editor.Implementation.IntelliSense.Completion.Controller.Session.ModelComputer.<GetGroupsAsync>d__16.MoveNext()
--- End of stack trace from previous location where exception was thrown ---
   at System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess(Task task)
   at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)
   at System.Runtime.CompilerServices.TaskAwaiter.ValidateEnd(Task task)
   at Microsoft.CodeAnalysis.Editor.Implementation.IntelliSense.Completion.Controller.Session.ModelComputer.<DoInBackgroundAsync>d__15.MoveNext()
   --- End of inner exception stack trace ---
---> (Inner Exception #0) System.AggregateException: One or more errors occurred. ---> System.OutOfMemoryException: Exception of type 'System.OutOfMemoryException' was thrown.
   at System.String.CtorCharArrayStartLength(Char[] value, Int32 startIndex, Int32 length)
   at Microsoft.VisualStudio.Text.Implementation.SimpleTextStorageLoader.<DoLoad>d__1.MoveNext()
   at Microsoft.VisualStudio.Text.Implementation.SimpleStringRebuilder.Create(ITextStorageLoader loader)
   at Microsoft.VisualStudio.Text.Implementation.BufferFactoryService.CreateTextBuffer(TextReader reader, IContentType contentType, Int64 length, String traceId)
   at Microsoft.VisualStudio.Text.Implementation.BufferFactoryService.CreateTextBuffer(TextReader reader, IContentType contentType)
   at Microsoft.CodeAnalysis.Editor.Implementation.Workspaces.EditorTextFactoryService.CreateText(TextReader reader, Encoding encoding, CancellationToken cancellationToken)
   at Microsoft.CodeAnalysis.Host.TemporaryStorageServiceFactory.TemporaryStorageService.TemporaryTextStorage.ReadText(CancellationToken cancellationToken)
   at Microsoft.CodeAnalysis.Host.TemporaryStorageServiceFactory.TemporaryStorageService.TemporaryTextStorage.<>c__DisplayClass6_0.<ReadTextAsync>b__0()
   at System.Threading.Tasks.Task`1.InnerInvoke()
   at System.Threading.Tasks.Task.Execute()
--- End of stack trace from previous location where exception was thrown ---
   at System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess(Task task)
   at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)
   at Microsoft.CodeAnalysis.RecoverableTextAndVersion.<RecoverAsync>d__6.MoveNext()
   --- End of inner exception stack trace ---
   at System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess(Task task)
   at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)
   at Microsoft.CodeAnalysis.Host.RecoverableCachedObjectSource`1.<GetValueAsync>d__16.MoveNext()
--- End of stack trace from previous location where exception was thrown ---
   at System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess(Task task)
   at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)
   at Microsoft.CodeAnalysis.TextDocumentState.<GetTextAsync>d__22.MoveNext()
--- End of stack trace from previous location where exception was thrown ---
   at System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess(Task task)
   at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)
   at Microsoft.CodeAnalysis.Editor.TypeScript.Features.ProjectDataCache.<GetCacheAsync>d__1.MoveNext()
--- End of stack trace from previous location where exception was thrown ---
   at System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess(Task task)
   at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)
   at Microsoft.CodeAnalysis.Editor.TypeScript.Features.TaskHandler.<PerformSemanticFeatureOperationAsync>d__1`1.MoveNext()
--- End of stack trace from previous location where exception was thrown ---
   at System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess(Task task)
   at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)
   at System.Runtime.CompilerServices.TaskAwaiter.ValidateEnd(Task task)
   at Microsoft.CodeAnalysis.Completion.AbstractCompletionService.<GetGroupsAsync>d__13.MoveNext()
--- End of stack trace from previous location where exception was thrown ---
   at System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess(Task task)
   at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)
   at Microsoft.CodeAnalysis.Completion.AbstractCompletionService.<GetGroupsAsync>d__10.MoveNext()
--- End of stack trace from previous location where exception was thrown ---
   at System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess(Task task)
   at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)
   at Microsoft.CodeAnalysis.Editor.Implementation.IntelliSense.Completion.Controller.Session.ModelComputer.<GetGroupsAsync>d__16.MoveNext()
--- End of stack trace from previous location where exception was thrown ---
   at System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess(Task task)
   at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)
   at System.Runtime.CompilerServices.TaskAwaiter.ValidateEnd(Task task)
   at Microsoft.CodeAnalysis.Editor.Implementation.IntelliSense.Completion.Controller.Session.ModelComputer.<DoInBackgroundAsync>d__15.MoveNext()
---> (Inner Exception #0) System.OutOfMemoryException: Exception of type 'System.OutOfMemoryException' was thrown.
   at System.String.CtorCharArrayStartLength(Char[] value, Int32 startIndex, Int32 length)
   at Microsoft.VisualStudio.Text.Implementation.SimpleTextStorageLoader.<DoLoad>d__1.MoveNext()
   at Microsoft.VisualStudio.Text.Implementation.SimpleStringRebuilder.Create(ITextStorageLoader loader)
   at Microsoft.VisualStudio.Text.Implementation.BufferFactoryService.CreateTextBuffer(TextReader reader, IContentType contentType, Int64 length, String traceId)
   at Microsoft.VisualStudio.Text.Implementation.BufferFactoryService.CreateTextBuffer(TextReader reader, IContentType contentType)
   at Microsoft.CodeAnalysis.Editor.Implementation.Workspaces.EditorTextFactoryService.CreateText(TextReader reader, Encoding encoding, CancellationToken cancellationToken)
   at Microsoft.CodeAnalysis.Host.TemporaryStorageServiceFactory.TemporaryStorageService.TemporaryTextStorage.ReadText(CancellationToken cancellationToken)
   at Microsoft.CodeAnalysis.Host.TemporaryStorageServiceFactory.TemporaryStorageService.TemporaryTextStorage.<>c__DisplayClass6_0.<ReadTextAsync>b__0()
   at System.Threading.Tasks.Task`1.InnerInvoke()
   at System.Threading.Tasks.Task.Execute()
--- End of stack trace from previous location where exception was thrown ---
   at System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess(Task task)
   at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)
   at Microsoft.CodeAnalysis.RecoverableTextAndVersion.<RecoverAsync>d__6.MoveNext()<---
<---

Stack:
   at System.Environment.FailFast(System.String, System.Exception)
   at Microsoft.CodeAnalysis.FailFast.OnFatalException(System.Exception)
   at Microsoft.CodeAnalysis.ErrorReporting.FatalError.Report(System.Exception, System.Action`1<System.Exception>)
   at Microsoft.CodeAnalysis.ErrorReporting.FatalError.Report(System.Exception)
   at Roslyn.Utilities.TaskExtensions.ReportFatalErrorWorker(System.Threading.Tasks.Task, System.Object)
   at System.Threading.Tasks.ContinuationTaskFromTask.InnerInvoke()
   at System.Threading.Tasks.Task.Execute()
   at System.Threading.Tasks.Task.ExecutionContextCallback(System.Object)
   at System.Threading.ExecutionContext.RunInternal(System.Threading.ExecutionContext, System.Threading.ContextCallback, System.Object, Boolean)
   at System.Threading.ExecutionContext.Run(System.Threading.ExecutionContext, System.Threading.ContextCallback, System.Object, Boolean)
   at System.Threading.Tasks.Task.ExecuteWithThreadLocal(System.Threading.Tasks.Task ByRef)
   at System.Threading.Tasks.Task.ExecuteEntry(Boolean)
   at System.Threading.Tasks.ThreadPoolTaskScheduler.TryExecuteTaskInline(System.Threading.Tasks.Task, Boolean)
   at System.Threading.Tasks.TaskScheduler.TryRunInline(System.Threading.Tasks.Task, Boolean)
   at System.Threading.Tasks.TaskContinuation.InlineIfPossibleOrElseQueue(System.Threading.Tasks.Task, Boolean)
   at System.Threading.Tasks.StandardTaskContinuation.Run(System.Threading.Tasks.Task, Boolean)
   at System.Threading.Tasks.Task.ContinueWithCore(System.Threading.Tasks.Task, System.Threading.Tasks.TaskScheduler, System.Threading.CancellationToken, System.Threading.Tasks.TaskContinuationOptions)
   at System.Threading.Tasks.Task.ContinueWith(System.Action`2<System.Threading.Tasks.Task,System.Object>, System.Object, System.Threading.Tasks.TaskScheduler, System.Threading.CancellationToken, System.Threading.Tasks.TaskContinuationOptions, System.Threading.StackCrawlMark ByRef)
   at System.Threading.Tasks.Task.ContinueWith(System.Action`2<System.Threading.Tasks.Task,System.Object>, System.Object, System.Threading.CancellationToken, System.Threading.Tasks.TaskContinuationOptions, System.Threading.Tasks.TaskScheduler)
   at Roslyn.Utilities.TaskExtensions.ReportFatalError(System.Threading.Tasks.Task, System.Object)
   at System.Threading.Tasks.ContinuationTaskFromResultTask`1[[System.__Canon, mscorlib, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089]].InnerInvoke()
   at System.Threading.Tasks.Task.Execute()
   at System.Threading.Tasks.Task.ExecutionContextCallback(System.Object)
   at System.Threading.ExecutionContext.RunInternal(System.Threading.ExecutionContext, System.Threading.ContextCallback, System.Object, Boolean)
   at System.Threading.ExecutionContext.Run(System.Threading.ExecutionContext, System.Threading.ContextCallback, System.Object, Boolean)
   at System.Threading.Tasks.Task.ExecuteWithThreadLocal(System.Threading.Tasks.Task ByRef)
   at System.Threading.Tasks.Task.ExecuteEntry(Boolean)
   at System.Threading.Tasks.ThreadPoolTaskScheduler.TryExecuteTaskInline(System.Threading.Tasks.Task, Boolean)
   at System.Threading.Tasks.TaskScheduler.TryRunInline(System.Threading.Tasks.Task, Boolean)
   at System.Threading.Tasks.TaskContinuation.InlineIfPossibleOrElseQueue(System.Threading.Tasks.Task, Boolean)
   at System.Threading.Tasks.StandardTaskContinuation.Run(System.Threading.Tasks.Task, Boolean)
   at System.Threading.Tasks.Task.FinishContinuations()
   at System.Threading.Tasks.Task.FinishStageThree()
   at System.Threading.Tasks.Task.FinishStageTwo()
   at System.Threading.Tasks.Task.Finish(Boolean)
   at System.Threading.Tasks.Task`1[[System.__Canon, mscorlib, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089]].TrySetException(System.Object)
   at System.Threading.Tasks.UnwrapPromise`1[[System.__Canon, mscorlib, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089]].TrySetFromTask(System.Threading.Tasks.Task, Boolean)
   at System.Threading.Tasks.UnwrapPromise`1[[System.__Canon, mscorlib, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089]].Invoke(System.Threading.Tasks.Task)
   at System.Threading.Tasks.Task.FinishContinuations()
   at System.Threading.Tasks.Task.FinishStageThree()
   at System.Threading.Tasks.Task.FinishStageTwo()
   at System.Threading.Tasks.Task.Finish(Boolean)
   at System.Threading.Tasks.Task`1[[System.__Canon, mscorlib, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089]].TrySetException(System.Object)
   at System.Runtime.CompilerServices.AsyncTaskMethodBuilder`1[[System.__Canon, mscorlib, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089]].SetException(System.Exception)
   at Microsoft.CodeAnalysis.Editor.Implementation.IntelliSense.Completion.Controller+Session+ModelComputer+<DoInBackgroundAsync>d__15.MoveNext()
   at System.Runtime.CompilerServices.AsyncMethodBuilderCore+MoveNextRunner.InvokeMoveNext(System.Object)
   at System.Threading.ExecutionContext.RunInternal(System.Threading.ExecutionContext, System.Threading.ContextCallback, System.Object, Boolean)
   at System.Threading.ExecutionContext.Run(System.Threading.ExecutionContext, System.Threading.ContextCallback, System.Object, Boolean)
   at System.Runtime.CompilerServices.AsyncMethodBuilderCore+MoveNextRunner.Run()
   at System.Threading.Tasks.AwaitTaskContinuation.RunOrScheduleAction(System.Action, Boolean, System.Threading.Tasks.Task ByRef)
   at System.Threading.Tasks.Task.FinishContinuations()
   at System.Threading.Tasks.Task.FinishStageThree()
   at System.Threading.Tasks.Task.FinishStageTwo()
   at System.Threading.Tasks.Task.Finish(Boolean)
   at System.Threading.Tasks.Task`1[[System.__Canon, mscorlib, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089]].TrySetException(System.Object)
   at System.Runtime.CompilerServices.AsyncTaskMethodBuilder`1[[System.__Canon, mscorlib, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089]].SetException(System.Exception)
   at Microsoft.CodeAnalysis.Editor.Implementation.IntelliSense.Completion.Controller+Session+ModelComputer+<GetGroupsAsync>d__16.MoveNext()
   at System.Runtime.CompilerServices.AsyncMethodBuilderCore+MoveNextRunner.InvokeMoveNext(System.Object)
   at System.Threading.ExecutionContext.RunInternal(System.Threading.ExecutionContext, System.Threading.ContextCallback, System.Object, Boolean)
   at System.Threading.ExecutionContext.Run(System.Threading.ExecutionContext, System.Threading.ContextCallback, System.Object, Boolean)
   at System.Runtime.CompilerServices.AsyncMethodBuilderCore+MoveNextRunner.Run()
   at System.Threading.Tasks.AwaitTaskContinuation.RunOrScheduleAction(System.Action, Boolean, System.Threading.Tasks.Task ByRef)
   at System.Threading.Tasks.Task.FinishContinuations()
   at System.Threading.Tasks.Task.FinishStageThree()
   at System.Threading.Tasks.Task.FinishStageTwo()
   at System.Threading.Tasks.Task.Finish(Boolean)
   at System.Threading.Tasks.Task`1[[System.__Canon, mscorlib, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089]].TrySetException(System.Object)
   at System.Runtime.CompilerServices.AsyncTaskMethodBuilder`1[[System.__Canon, mscorlib, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089]].SetException(System.Exception)
   at Microsoft.CodeAnalysis.Completion.AbstractCompletionService+<GetGroupsAsync>d__10.MoveNext()
   at System.Runtime.CompilerServices.AsyncMethodBuilderCore+MoveNextRunner.InvokeMoveNext(System.Object)
   at System.Threading.ExecutionContext.RunInternal(System.Threading.ExecutionContext, System.Threading.ContextCallback, System.Object, Boolean)
   at System.Threading.ExecutionContext.Run(System.Threading.ExecutionContext, System.Threading.ContextCallback, System.Object, Boolean)
   at System.Runtime.CompilerServices.AsyncMethodBuilderCore+MoveNextRunner.Run()
   at System.Threading.Tasks.AwaitTaskContinuation.RunOrScheduleAction(System.Action, Boolean, System.Threading.Tasks.Task ByRef)
   at System.Threading.Tasks.Task.FinishContinuations()
   at System.Threading.Tasks.Task.FinishStageThree()
   at System.Threading.Tasks.Task.FinishStageTwo()
   at System.Threading.Tasks.Task.Finish(Boolean)
   at System.Threading.Tasks.Task`1[[System.__Canon, mscorlib, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089]].TrySetException(System.Object)
   at System.Runtime.CompilerServices.AsyncTaskMethodBuilder`1[[System.__Canon, mscorlib, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089]].SetException(System.Exception)
   at Microsoft.CodeAnalysis.Completion.AbstractCompletionService+<GetGroupsAsync>d__13.MoveNext()
   at System.Runtime.CompilerServices.AsyncMethodBuilderCore+MoveNextRunner.InvokeMoveNext(System.Object)
   at System.Threading.ExecutionContext.RunInternal(System.Threading.ExecutionContext, System.Threading.ContextCallback, System.Object, Boolean)
   at System.Threading.ExecutionContext.Run(System.Threading.ExecutionContext, System.Threading.ContextCallback, System.Object, Boolean)
   at System.Runtime.CompilerServices.AsyncMethodBuilderCore+MoveNextRunner.Run()
   at System.Threading.Tasks.AwaitTaskContinuation.RunOrScheduleAction(System.Action, Boolean, System.Threading.Tasks.Task ByRef)
   at System.Threading.Tasks.Task.FinishContinuations()
   at System.Threading.Tasks.Task.FinishStageThree()
   at System.Threading.Tasks.Task.FinishStageTwo()
   at System.Threading.Tasks.Task.Finish(Boolean)
   at System.Threading.Tasks.Task`1[[System.__Canon, mscorlib, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089]].TrySetException(System.Object)
   at System.Runtime.CompilerServices.AsyncTaskMethodBuilder`1[[System.__Canon, mscorlib, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089]].SetException(System.Exception)
   at Microsoft.CodeAnalysis.Editor.TypeScript.Features.TaskHandler+<PerformSemanticFeatureOperationAsync>d__1`1[[System.__Canon, mscorlib, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089]].MoveNext()
   at System.Runtime.CompilerServices.AsyncMethodBuilderCore+MoveNextRunner.InvokeMoveNext(System.Object)
   at System.Threading.ExecutionContext.RunInternal(System.Threading.ExecutionContext, System.Threading.ContextCallback, System.Object, Boolean)
   at System.Threading.ExecutionContext.Run(System.Threading.ExecutionContext, System.Threading.ContextCallback, System.Object, Boolean)
   at System.Runtime.CompilerServices.AsyncMethodBuilderCore+MoveNextRunner.Run()
   at System.Threading.Tasks.AwaitTaskContinuation.RunOrScheduleAction(System.Action, Boolean, System.Threading.Tasks.Task ByRef)
   at System.Threading.Tasks.Task.FinishContinuations()
   at System.Threading.Tasks.Task.FinishStageThree()
   at System.Threading.Tasks.Task.FinishStageTwo()
   at System.Threading.Tasks.Task.Finish(Boolean)
   at System.Threading.Tasks.Task`1[[System.__Canon, mscorlib, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089]].TrySetException(System.Object)
   at System.Runtime.CompilerServices.AsyncTaskMethodBuilder`1[[System.__Canon, mscorlib, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089]].SetException(System.Exception)
   at Microsoft.CodeAnalysis.Editor.TypeScript.Features.ProjectDataCache+<GetCacheAsync>d__1.MoveNext()
   at System.Runtime.CompilerServices.AsyncMethodBuilderCore+MoveNextRunner.InvokeMoveNext(System.Object)
   at System.Threading.ExecutionContext.RunInternal(System.Threading.ExecutionContext, System.Threading.ContextCallback, System.Object, Boolean)
   at System.Threading.ExecutionContext.Run(System.Threading.ExecutionContext, System.Threading.ContextCallback, System.Object, Boolean)
   at System.Runtime.CompilerServices.AsyncMethodBuilderCore+MoveNextRunner.Run()
   at System.Threading.Tasks.AwaitTaskContinuation.RunOrScheduleAction(System.Action, Boolean, System.Threading.Tasks.Task ByRef)
   at System.Threading.Tasks.Task.FinishContinuations()
   at System.Threading.Tasks.Task.FinishStageThree()
   at System.Threading.Tasks.Task.FinishStageTwo()
   at System.Threading.Tasks.Task.Finish(Boolean)
   at System.Threading.Tasks.Task`1[[System.__Canon, mscorlib, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089]].TrySetException(System.Object)
   at System.Runtime.CompilerServices.AsyncTaskMethodBuilder`1[[System.__Canon, mscorlib, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089]].SetException(System.Exception)
   at Microsoft.CodeAnalysis.TextDocumentState+<GetTextAsync>d__22.MoveNext()
   at System.Runtime.CompilerServices.AsyncMethodBuilderCore+MoveNextRunner.InvokeMoveNext(System.Object)
   at System.Threading.ExecutionContext.RunInternal(System.Threading.ExecutionContext, System.Threading.ContextCallback, System.Object, Boolean)
   at System.Threading.ExecutionContext.Run(System.Threading.ExecutionContext, System.Threading.ContextCallback, System.Object, Boolean)
   at System.Runtime.CompilerServices.AsyncMethodBuilderCore+MoveNextRunner.Run()
   at System.Threading.Tasks.AwaitTaskContinuation.RunOrScheduleAction(System.Action, Boolean, System.Threading.Tasks.Task ByRef)
   at System.Threading.Tasks.Task.FinishContinuations()
   at System.Threading.Tasks.Task.FinishStageThree()
   at System.Threading.Tasks.Task.FinishStageTwo()
   at System.Threading.Tasks.Task.Finish(Boolean)
   at System.Threading.Tasks.Task`1[[System.__Canon, mscorlib, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089]].TrySetException(System.Object)
   at System.Runtime.CompilerServices.AsyncTaskMethodBuilder`1[[System.__Canon, mscorlib, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089]].SetException(System.Exception)
   at Microsoft.CodeAnalysis.Host.RecoverableCachedObjectSource`1+<GetValueAsync>d__16[[System.__Canon, mscorlib, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089]].MoveNext()
   at System.Runtime.CompilerServices.AsyncMethodBuilderCore+MoveNextRunner.InvokeMoveNext(System.Object)
   at System.Threading.ExecutionContext.RunInternal(System.Threading.ExecutionContext, System.Threading.ContextCallback, System.Object, Boolean)
   at System.Threading.ExecutionContext.Run(System.Threading.ExecutionContext, System.Threading.ContextCallback, System.Object, Boolean)
   at System.Runtime.CompilerServices.AsyncMethodBuilderCore+MoveNextRunner.Run()
   at System.Threading.Tasks.AwaitTaskContinuation.RunOrScheduleAction(System.Action, Boolean, System.Threading.Tasks.Task ByRef)
   at System.Threading.Tasks.Task.FinishContinuations()
   at System.Threading.Tasks.Task.FinishStageThree()
   at System.Threading.Tasks.Task.FinishStageTwo()
   at System.Threading.Tasks.Task.Finish(Boolean)
   at System.Threading.Tasks.Task`1[[System.__Canon, mscorlib, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089]].TrySetException(System.Object)
   at System.Runtime.CompilerServices.AsyncTaskMethodBuilder`1[[System.__Canon, mscorlib, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089]].SetException(System.Exception)
   at Roslyn.Utilities.AsyncLazy`1+Request[[System.__Canon, mscorlib, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089]].CompleteFromTaskSynchronously(System.Threading.Tasks.Task`1<System.__Canon>)
   at Roslyn.Utilities.AsyncLazy`1+Request[[System.__Canon, mscorlib, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089]].CompleteFromTaskSynchronouslyStub(System.Object)
   at System.Threading.Tasks.Task.InnerInvoke()
   at System.Threading.Tasks.Task.Execute()
   at System.Threading.Tasks.Task.ExecutionContextCallback(System.Object)
   at System.Threading.ExecutionContext.RunInternal(System.Threading.ExecutionContext, System.Threading.ContextCallback, System.Object, Boolean)
   at System.Threading.ExecutionContext.Run(System.Threading.ExecutionContext, System.Threading.ContextCallback, System.Object, Boolean)
   at System.Threading.Tasks.Task.ExecuteWithThreadLocal(System.Threading.Tasks.Task ByRef)
   at System.Threading.Tasks.Task.ExecuteEntry(Boolean)
   at System.Threading.Tasks.Task.System.Threading.IThreadPoolWorkItem.ExecuteWorkItem()
   at System.Threading.ThreadPoolWorkQueue.Dispatch()
   at System.Threading._ThreadPoolWaitCallback.PerformWaitCallback()

Event Xml:
<Event xmlns="http://schemas.microsoft.com/win/2004/08/events/event">
  <System>
    <Provider Name=".NET Runtime" />
    <EventID Qualifiers="0">1025</EventID>
    <Level>2</Level>
    <Task>0</Task>
    <Keywords>0x80000000000000</Keywords>
    <TimeCreated SystemTime="2015-05-11T18:21:36.000000000Z" />
    <EventRecordID>1295729</EventRecordID>
    <Channel>Application</Channel>
    <Computer>Noel-PC</Computer>
    <Security />
  </System>
  <EventData>
    <Data>Application: devenv.exe
Framework Version: v4.0.30319
Description: The application requested process termination through System.Environment.FailFast(string message).
Message: System.AggregateException: One or more errors occurred. ---&gt; System.AggregateException: One or more errors occurred. ---&gt; System.OutOfMemoryException: Exception of type 'System.OutOfMemoryException' was thrown.
   at System.String.CtorCharArrayStartLength(Char[] value, Int32 startIndex, Int32 length)
   at Microsoft.VisualStudio.Text.Implementation.SimpleTextStorageLoader.&lt;DoLoad&gt;d__1.MoveNext()
   at Microsoft.VisualStudio.Text.Implementation.SimpleStringRebuilder.Create(ITextStorageLoader loader)
   at Microsoft.VisualStudio.Text.Implementation.BufferFactoryService.CreateTextBuffer(TextReader reader, IContentType contentType, Int64 length, String traceId)
   at Microsoft.VisualStudio.Text.Implementation.BufferFactoryService.CreateTextBuffer(TextReader reader, IContentType contentType)
   at Microsoft.CodeAnalysis.Editor.Implementation.Workspaces.EditorTextFactoryService.CreateText(TextReader reader, Encoding encoding, CancellationToken cancellationToken)
   at Microsoft.CodeAnalysis.Host.TemporaryStorageServiceFactory.TemporaryStorageService.TemporaryTextStorage.ReadText(CancellationToken cancellationToken)
   at Microsoft.CodeAnalysis.Host.TemporaryStorageServiceFactory.TemporaryStorageService.TemporaryTextStorage.&lt;&gt;c__DisplayClass6_0.&lt;ReadTextAsync&gt;b__0()
   at System.Threading.Tasks.Task`1.InnerInvoke()
   at System.Threading.Tasks.Task.Execute()
--- End of stack trace from previous location where exception was thrown ---
   at System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess(Task task)
   at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)
   at Microsoft.CodeAnalysis.RecoverableTextAndVersion.&lt;RecoverAsync&gt;d__6.MoveNext()
   --- End of inner exception stack trace ---
   at System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess(Task task)
   at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)
   at Microsoft.CodeAnalysis.Host.RecoverableCachedObjectSource`1.&lt;GetValueAsync&gt;d__16.MoveNext()
--- End of stack trace from previous location where exception was thrown ---
   at System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess(Task task)
   at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)
   at Microsoft.CodeAnalysis.TextDocumentState.&lt;GetTextAsync&gt;d__22.MoveNext()
--- End of stack trace from previous location where exception was thrown ---
   at System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess(Task task)
   at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)
   at Microsoft.CodeAnalysis.Editor.TypeScript.Features.ProjectDataCache.&lt;GetCacheAsync&gt;d__1.MoveNext()
--- End of stack trace from previous location where exception was thrown ---
   at System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess(Task task)
   at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)
   at Microsoft.CodeAnalysis.Editor.TypeScript.Features.TaskHandler.&lt;PerformSemanticFeatureOperationAsync&gt;d__1`1.MoveNext()
--- End of stack trace from previous location where exception was thrown ---
   at System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess(Task task)
   at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)
   at System.Runtime.CompilerServices.TaskAwaiter.ValidateEnd(Task task)
   at Microsoft.CodeAnalysis.Completion.AbstractCompletionService.&lt;GetGroupsAsync&gt;d__13.MoveNext()
--- End of stack trace from previous location where exception was thrown ---
   at System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess(Task task)
   at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)
   at Microsoft.CodeAnalysis.Completion.AbstractCompletionService.&lt;GetGroupsAsync&gt;d__10.MoveNext()
--- End of stack trace from previous location where exception was thrown ---
   at System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess(Task task)
   at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)
   at Microsoft.CodeAnalysis.Editor.Implementation.IntelliSense.Completion.Controller.Session.ModelComputer.&lt;GetGroupsAsync&gt;d__16.MoveNext()
--- End of stack trace from previous location where exception was thrown ---
   at System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess(Task task)
   at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)
   at System.Runtime.CompilerServices.TaskAwaiter.ValidateEnd(Task task)
   at Microsoft.CodeAnalysis.Editor.Implementation.IntelliSense.Completion.Controller.Session.ModelComputer.&lt;DoInBackgroundAsync&gt;d__15.MoveNext()
   --- End of inner exception stack trace ---
---&gt; (Inner Exception #0) System.AggregateException: One or more errors occurred. ---&gt; System.OutOfMemoryException: Exception of type 'System.OutOfMemoryException' was thrown.
   at System.String.CtorCharArrayStartLength(Char[] value, Int32 startIndex, Int32 length)
   at Microsoft.VisualStudio.Text.Implementation.SimpleTextStorageLoader.&lt;DoLoad&gt;d__1.MoveNext()
   at Microsoft.VisualStudio.Text.Implementation.SimpleStringRebuilder.Create(ITextStorageLoader loader)
   at Microsoft.VisualStudio.Text.Implementation.BufferFactoryService.CreateTextBuffer(TextReader reader, IContentType contentType, Int64 length, String traceId)
   at Microsoft.VisualStudio.Text.Implementation.BufferFactoryService.CreateTextBuffer(TextReader reader, IContentType contentType)
   at Microsoft.CodeAnalysis.Editor.Implementation.Workspaces.EditorTextFactoryService.CreateText(TextReader reader, Encoding encoding, CancellationToken cancellationToken)
   at Microsoft.CodeAnalysis.Host.TemporaryStorageServiceFactory.TemporaryStorageService.TemporaryTextStorage.ReadText(CancellationToken cancellationToken)
   at Microsoft.CodeAnalysis.Host.TemporaryStorageServiceFactory.TemporaryStorageService.TemporaryTextStorage.&lt;&gt;c__DisplayClass6_0.&lt;ReadTextAsync&gt;b__0()
   at System.Threading.Tasks.Task`1.InnerInvoke()
   at System.Threading.Tasks.Task.Execute()
--- End of stack trace from previous location where exception was thrown ---
   at System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess(Task task)
   at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)
   at Microsoft.CodeAnalysis.RecoverableTextAndVersion.&lt;RecoverAsync&gt;d__6.MoveNext()
   --- End of inner exception stack trace ---
   at System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess(Task task)
   at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)
   at Microsoft.CodeAnalysis.Host.RecoverableCachedObjectSource`1.&lt;GetValueAsync&gt;d__16.MoveNext()
--- End of stack trace from previous location where exception was thrown ---
   at System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess(Task task)
   at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)
   at Microsoft.CodeAnalysis.TextDocumentState.&lt;GetTextAsync&gt;d__22.MoveNext()
--- End of stack trace from previous location where exception was thrown ---
   at System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess(Task task)
   at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)
   at Microsoft.CodeAnalysis.Editor.TypeScript.Features.ProjectDataCache.&lt;GetCacheAsync&gt;d__1.MoveNext()
--- End of stack trace from previous location where exception was thrown ---
   at System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess(Task task)
   at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)
   at Microsoft.CodeAnalysis.Editor.TypeScript.Features.TaskHandler.&lt;PerformSemanticFeatureOperationAsync&gt;d__1`1.MoveNext()
--- End of stack trace from previous location where exception was thrown ---
   at System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess(Task task)
   at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)
   at System.Runtime.CompilerServices.TaskAwaiter.ValidateEnd(Task task)
   at Microsoft.CodeAnalysis.Completion.AbstractCompletionService.&lt;GetGroupsAsync&gt;d__13.MoveNext()
--- End of stack trace from previous location where exception was thrown ---
   at System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess(Task task)
   at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)
   at Microsoft.CodeAnalysis.Completion.AbstractCompletionService.&lt;GetGroupsAsync&gt;d__10.MoveNext()
--- End of stack trace from previous location where exception was thrown ---
   at System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess(Task task)
   at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)
   at Microsoft.CodeAnalysis.Editor.Implementation.IntelliSense.Completion.Controller.Session.ModelComputer.&lt;GetGroupsAsync&gt;d__16.MoveNext()
--- End of stack trace from previous location where exception was thrown ---
   at System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess(Task task)
   at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)
   at System.Runtime.CompilerServices.TaskAwaiter.ValidateEnd(Task task)
   at Microsoft.CodeAnalysis.Editor.Implementation.IntelliSense.Completion.Controller.Session.ModelComputer.&lt;DoInBackgroundAsync&gt;d__15.MoveNext()
---&gt; (Inner Exception #0) System.OutOfMemoryException: Exception of type 'System.OutOfMemoryException' was thrown.
   at System.String.CtorCharArrayStartLength(Char[] value, Int32 startIndex, Int32 length)
   at Microsoft.VisualStudio.Text.Implementation.SimpleTextStorageLoader.&lt;DoLoad&gt;d__1.MoveNext()
   at Microsoft.VisualStudio.Text.Implementation.SimpleStringRebuilder.Create(ITextStorageLoader loader)
   at Microsoft.VisualStudio.Text.Implementation.BufferFactoryService.CreateTextBuffer(TextReader reader, IContentType contentType, Int64 length, String traceId)
   at Microsoft.VisualStudio.Text.Implementation.BufferFactoryService.CreateTextBuffer(TextReader reader, IContentType contentType)
   at Microsoft.CodeAnalysis.Editor.Implementation.Workspaces.EditorTextFactoryService.CreateText(TextReader reader, Encoding encoding, CancellationToken cancellationToken)
   at Microsoft.CodeAnalysis.Host.TemporaryStorageServiceFactory.TemporaryStorageService.TemporaryTextStorage.ReadText(CancellationToken cancellationToken)
   at Microsoft.CodeAnalysis.Host.TemporaryStorageServiceFactory.TemporaryStorageService.TemporaryTextStorage.&lt;&gt;c__DisplayClass6_0.&lt;ReadTextAsync&gt;b__0()
   at System.Threading.Tasks.Task`1.InnerInvoke()
   at System.Threading.Tasks.Task.Execute()
--- End of stack trace from previous location where exception was thrown ---
   at System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess(Task task)
   at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)
   at Microsoft.CodeAnalysis.RecoverableTextAndVersion.&lt;RecoverAsync&gt;d__6.MoveNext()&lt;---
&lt;---

Stack:
   at System.Environment.FailFast(System.String, System.Exception)
   at Microsoft.CodeAnalysis.FailFast.OnFatalException(System.Exception)
   at Microsoft.CodeAnalysis.ErrorReporting.FatalError.Report(System.Exception, System.Action`1&lt;System.Exception&gt;)
   at Microsoft.CodeAnalysis.ErrorReporting.FatalError.Report(System.Exception)
   at Roslyn.Utilities.TaskExtensions.ReportFatalErrorWorker(System.Threading.Tasks.Task, System.Object)
   at System.Threading.Tasks.ContinuationTaskFromTask.InnerInvoke()
   at System.Threading.Tasks.Task.Execute()
   at System.Threading.Tasks.Task.ExecutionContextCallback(System.Object)
   at System.Threading.ExecutionContext.RunInternal(System.Threading.ExecutionContext, System.Threading.ContextCallback, System.Object, Boolean)
   at System.Threading.ExecutionContext.Run(System.Threading.ExecutionContext, System.Threading.ContextCallback, System.Object, Boolean)
   at System.Threading.Tasks.Task.ExecuteWithThreadLocal(System.Threading.Tasks.Task ByRef)
   at System.Threading.Tasks.Task.ExecuteEntry(Boolean)
   at System.Threading.Tasks.ThreadPoolTaskScheduler.TryExecuteTaskInline(System.Threading.Tasks.Task, Boolean)
   at System.Threading.Tasks.TaskScheduler.TryRunInline(System.Threading.Tasks.Task, Boolean)
   at System.Threading.Tasks.TaskContinuation.InlineIfPossibleOrElseQueue(System.Threading.Tasks.Task, Boolean)
   at System.Threading.Tasks.StandardTaskContinuation.Run(System.Threading.Tasks.Task, Boolean)
   at System.Threading.Tasks.Task.ContinueWithCore(System.Threading.Tasks.Task, System.Threading.Tasks.TaskScheduler, System.Threading.CancellationToken, System.Threading.Tasks.TaskContinuationOptions)
   at System.Threading.Tasks.Task.ContinueWith(System.Action`2&lt;System.Threading.Tasks.Task,System.Object&gt;, System.Object, System.Threading.Tasks.TaskScheduler, System.Threading.CancellationToken, System.Threading.Tasks.TaskContinuationOptions, System.Threading.StackCrawlMark ByRef)
   at System.Threading.Tasks.Task.ContinueWith(System.Action`2&lt;System.Threading.Tasks.Task,System.Object&gt;, System.Object, System.Threading.CancellationToken, System.Threading.Tasks.TaskContinuationOptions, System.Threading.Tasks.TaskScheduler)
   at Roslyn.Utilities.TaskExtensions.ReportFatalError(System.Threading.Tasks.Task, System.Object)
   at System.Threading.Tasks.ContinuationTaskFromResultTask`1[[System.__Canon, mscorlib, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089]].InnerInvoke()
   at System.Threading.Tasks.Task.Execute()
   at System.Threading.Tasks.Task.ExecutionContextCallback(System.Object)
   at System.Threading.ExecutionContext.RunInternal(System.Threading.ExecutionContext, System.Threading.ContextCallback, System.Object, Boolean)
   at System.Threading.ExecutionContext.Run(System.Threading.ExecutionContext, System.Threading.ContextCallback, System.Object, Boolean)
   at System.Threading.Tasks.Task.ExecuteWithThreadLocal(System.Threading.Tasks.Task ByRef)
   at System.Threading.Tasks.Task.ExecuteEntry(Boolean)
   at System.Threading.Tasks.ThreadPoolTaskScheduler.TryExecuteTaskInline(System.Threading.Tasks.Task, Boolean)
   at System.Threading.Tasks.TaskScheduler.TryRunInline(System.Threading.Tasks.Task, Boolean)
   at System.Threading.Tasks.TaskContinuation.InlineIfPossibleOrElseQueue(System.Threading.Tasks.Task, Boolean)
   at System.Threading.Tasks.StandardTaskContinuation.Run(System.Threading.Tasks.Task, Boolean)
   at System.Threading.Tasks.Task.FinishContinuations()
   at System.Threading.Tasks.Task.FinishStageThree()
   at System.Threading.Tasks.Task.FinishStageTwo()
   at System.Threading.Tasks.Task.Finish(Boolean)
   at System.Threading.Tasks.Task`1[[System.__Canon, mscorlib, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089]].TrySetException(System.Object)
   at System.Threading.Tasks.UnwrapPromise`1[[System.__Canon, mscorlib, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089]].TrySetFromTask(System.Threading.Tasks.Task, Boolean)
   at System.Threading.Tasks.UnwrapPromise`1[[System.__Canon, mscorlib, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089]].Invoke(System.Threading.Tasks.Task)
   at System.Threading.Tasks.Task.FinishContinuations()
   at System.Threading.Tasks.Task.FinishStageThree()
   at System.Threading.Tasks.Task.FinishStageTwo()
   at System.Threading.Tasks.Task.Finish(Boolean)
   at System.Threading.Tasks.Task`1[[System.__Canon, mscorlib, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089]].TrySetException(System.Object)
   at System.Runtime.CompilerServices.AsyncTaskMethodBuilder`1[[System.__Canon, mscorlib, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089]].SetException(System.Exception)
   at Microsoft.CodeAnalysis.Editor.Implementation.IntelliSense.Completion.Controller+Session+ModelComputer+&lt;DoInBackgroundAsync&gt;d__15.MoveNext()
   at System.Runtime.CompilerServices.AsyncMethodBuilderCore+MoveNextRunner.InvokeMoveNext(System.Object)
   at System.Threading.ExecutionContext.RunInternal(System.Threading.ExecutionContext, System.Threading.ContextCallback, System.Object, Boolean)
   at System.Threading.ExecutionContext.Run(System.Threading.ExecutionContext, System.Threading.ContextCallback, System.Object, Boolean)
   at System.Runtime.CompilerServices.AsyncMethodBuilderCore+MoveNextRunner.Run()
   at System.Threading.Tasks.AwaitTaskContinuation.RunOrScheduleAction(System.Action, Boolean, System.Threading.Tasks.Task ByRef)
   at System.Threading.Tasks.Task.FinishContinuations()
   at System.Threading.Tasks.Task.FinishStageThree()
   at System.Threading.Tasks.Task.FinishStageTwo()
   at System.Threading.Tasks.Task.Finish(Boolean)
   at System.Threading.Tasks.Task`1[[System.__Canon, mscorlib, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089]].TrySetException(System.Object)
   at System.Runtime.CompilerServices.AsyncTaskMethodBuilder`1[[System.__Canon, mscorlib, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089]].SetException(System.Exception)
   at Microsoft.CodeAnalysis.Editor.Implementation.IntelliSense.Completion.Controller+Session+ModelComputer+&lt;GetGroupsAsync&gt;d__16.MoveNext()
   at System.Runtime.CompilerServices.AsyncMethodBuilderCore+MoveNextRunner.InvokeMoveNext(System.Object)
   at System.Threading.ExecutionContext.RunInternal(System.Threading.ExecutionContext, System.Threading.ContextCallback, System.Object, Boolean)
   at System.Threading.ExecutionContext.Run(System.Threading.ExecutionContext, System.Threading.ContextCallback, System.Object, Boolean)
   at System.Runtime.CompilerServices.AsyncMethodBuilderCore+MoveNextRunner.Run()
   at System.Threading.Tasks.AwaitTaskContinuation.RunOrScheduleAction(System.Action, Boolean, System.Threading.Tasks.Task ByRef)
   at System.Threading.Tasks.Task.FinishContinuations()
   at System.Threading.Tasks.Task.FinishStageThree()
   at System.Threading.Tasks.Task.FinishStageTwo()
   at System.Threading.Tasks.Task.Finish(Boolean)
   at System.Threading.Tasks.Task`1[[System.__Canon, mscorlib, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089]].TrySetException(System.Object)
   at System.Runtime.CompilerServices.AsyncTaskMethodBuilder`1[[System.__Canon, mscorlib, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089]].SetException(System.Exception)
   at Microsoft.CodeAnalysis.Completion.AbstractCompletionService+&lt;GetGroupsAsync&gt;d__10.MoveNext()
   at System.Runtime.CompilerServices.AsyncMethodBuilderCore+MoveNextRunner.InvokeMoveNext(System.Object)
   at System.Threading.ExecutionContext.RunInternal(System.Threading.ExecutionContext, System.Threading.ContextCallback, System.Object, Boolean)
   at System.Threading.ExecutionContext.Run(System.Threading.ExecutionContext, System.Threading.ContextCallback, System.Object, Boolean)
   at System.Runtime.CompilerServices.AsyncMethodBuilderCore+MoveNextRunner.Run()
   at System.Threading.Tasks.AwaitTaskContinuation.RunOrScheduleAction(System.Action, Boolean, System.Threading.Tasks.Task ByRef)
   at System.Threading.Tasks.Task.FinishContinuations()
   at System.Threading.Tasks.Task.FinishStageThree()
   at System.Threading.Tasks.Task.FinishStageTwo()
   at System.Threading.Tasks.Task.Finish(Boolean)
   at System.Threading.Tasks.Task`1[[System.__Canon, mscorlib, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089]].TrySetException(System.Object)
   at System.Runtime.CompilerServices.AsyncTaskMethodBuilder`1[[System.__Canon, mscorlib, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089]].SetException(System.Exception)
   at Microsoft.CodeAnalysis.Completion.AbstractCompletionService+&lt;GetGroupsAsync&gt;d__13.MoveNext()
   at System.Runtime.CompilerServices.AsyncMethodBuilderCore+MoveNextRunner.InvokeMoveNext(System.Object)
   at System.Threading.ExecutionContext.RunInternal(System.Threading.ExecutionContext, System.Threading.ContextCallback, System.Object, Boolean)
   at System.Threading.ExecutionContext.Run(System.Threading.ExecutionContext, System.Threading.ContextCallback, System.Object, Boolean)
   at System.Runtime.CompilerServices.AsyncMethodBuilderCore+MoveNextRunner.Run()
   at System.Threading.Tasks.AwaitTaskContinuation.RunOrScheduleAction(System.Action, Boolean, System.Threading.Tasks.Task ByRef)
   at System.Threading.Tasks.Task.FinishContinuations()
   at System.Threading.Tasks.Task.FinishStageThree()
   at System.Threading.Tasks.Task.FinishStageTwo()
   at System.Threading.Tasks.Task.Finish(Boolean)
   at System.Threading.Tasks.Task`1[[System.__Canon, mscorlib, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089]].TrySetException(System.Object)
   at System.Runtime.CompilerServices.AsyncTaskMethodBuilder`1[[System.__Canon, mscorlib, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089]].SetException(System.Exception)
   at Microsoft.CodeAnalysis.Editor.TypeScript.Features.TaskHandler+&lt;PerformSemanticFeatureOperationAsync&gt;d__1`1[[System.__Canon, mscorlib, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089]].MoveNext()
   at System.Runtime.CompilerServices.AsyncMethodBuilderCore+MoveNextRunner.InvokeMoveNext(System.Object)
   at System.Threading.ExecutionContext.RunInternal(System.Threading.ExecutionContext, System.Threading.ContextCallback, System.Object, Boolean)
   at System.Threading.ExecutionContext.Run(System.Threading.ExecutionContext, System.Threading.ContextCallback, System.Object, Boolean)
   at System.Runtime.CompilerServices.AsyncMethodBuilderCore+MoveNextRunner.Run()
   at System.Threading.Tasks.AwaitTaskContinuation.RunOrScheduleAction(System.Action, Boolean, System.Threading.Tasks.Task ByRef)
   at System.Threading.Tasks.Task.FinishContinuations()
   at System.Threading.Tasks.Task.FinishStageThree()
   at System.Threading.Tasks.Task.FinishStageTwo()
   at System.Threading.Tasks.Task.Finish(Boolean)
   at System.Threading.Tasks.Task`1[[System.__Canon, mscorlib, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089]].TrySetException(System.Object)
   at System.Runtime.CompilerServices.AsyncTaskMethodBuilder`1[[System.__Canon, mscorlib, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089]].SetException(System.Exception)
   at Microsoft.CodeAnalysis.Editor.TypeScript.Features.ProjectDataCache+&lt;GetCacheAsync&gt;d__1.MoveNext()
   at System.Runtime.CompilerServices.AsyncMethodBuilderCore+MoveNextRunner.InvokeMoveNext(System.Object)
   at System.Threading.ExecutionContext.RunInternal(System.Threading.ExecutionContext, System.Threading.ContextCallback, System.Object, Boolean)
   at System.Threading.ExecutionContext.Run(System.Threading.ExecutionContext, System.Threading.ContextCallback, System.Object, Boolean)
   at System.Runtime.CompilerServices.AsyncMethodBuilderCore+MoveNextRunner.Run()
   at System.Threading.Tasks.AwaitTaskContinuation.RunOrScheduleAction(System.Action, Boolean, System.Threading.Tasks.Task ByRef)
   at System.Threading.Tasks.Task.FinishContinuations()
   at System.Threading.Tasks.Task.FinishStageThree()
   at System.Threading.Tasks.Task.FinishStageTwo()
   at System.Threading.Tasks.Task.Finish(Boolean)
   at System.Threading.Tasks.Task`1[[System.__Canon, mscorlib, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089]].TrySetException(System.Object)
   at System.Runtime.CompilerServices.AsyncTaskMethodBuilder`1[[System.__Canon, mscorlib, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089]].SetException(System.Exception)
   at Microsoft.CodeAnalysis.TextDocumentState+&lt;GetTextAsync&gt;d__22.MoveNext()
   at System.Runtime.CompilerServices.AsyncMethodBuilderCore+MoveNextRunner.InvokeMoveNext(System.Object)
   at System.Threading.ExecutionContext.RunInternal(System.Threading.ExecutionContext, System.Threading.ContextCallback, System.Object, Boolean)
   at System.Threading.ExecutionContext.Run(System.Threading.ExecutionContext, System.Threading.ContextCallback, System.Object, Boolean)
   at System.Runtime.CompilerServices.AsyncMethodBuilderCore+MoveNextRunner.Run()
   at System.Threading.Tasks.AwaitTaskContinuation.RunOrScheduleAction(System.Action, Boolean, System.Threading.Tasks.Task ByRef)
   at System.Threading.Tasks.Task.FinishContinuations()
   at System.Threading.Tasks.Task.FinishStageThree()
   at System.Threading.Tasks.Task.FinishStageTwo()
   at System.Threading.Tasks.Task.Finish(Boolean)
   at System.Threading.Tasks.Task`1[[System.__Canon, mscorlib, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089]].TrySetException(System.Object)
   at System.Runtime.CompilerServices.AsyncTaskMethodBuilder`1[[System.__Canon, mscorlib, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089]].SetException(System.Exception)
   at Microsoft.CodeAnalysis.Host.RecoverableCachedObjectSource`1+&lt;GetValueAsync&gt;d__16[[System.__Canon, mscorlib, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089]].MoveNext()
   at System.Runtime.CompilerServices.AsyncMethodBuilderCore+MoveNextRunner.InvokeMoveNext(System.Object)
   at System.Threading.ExecutionContext.RunInternal(System.Threading.ExecutionContext, System.Threading.ContextCallback, System.Object, Boolean)
   at System.Threading.ExecutionContext.Run(System.Threading.ExecutionContext, System.Threading.ContextCallback, System.Object, Boolean)
   at System.Runtime.CompilerServices.AsyncMethodBuilderCore+MoveNextRunner.Run()
   at System.Threading.Tasks.AwaitTaskContinuation.RunOrScheduleAction(System.Action, Boolean, System.Threading.Tasks.Task ByRef)
   at System.Threading.Tasks.Task.FinishContinuations()
   at System.Threading.Tasks.Task.FinishStageThree()
   at System.Threading.Tasks.Task.FinishStageTwo()
   at System.Threading.Tasks.Task.Finish(Boolean)
   at System.Threading.Tasks.Task`1[[System.__Canon, mscorlib, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089]].TrySetException(System.Object)
   at System.Runtime.CompilerServices.AsyncTaskMethodBuilder`1[[System.__Canon, mscorlib, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089]].SetException(System.Exception)
   at Roslyn.Utilities.AsyncLazy`1+Request[[System.__Canon, mscorlib, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089]].CompleteFromTaskSynchronously(System.Threading.Tasks.Task`1&lt;System.__Canon&gt;)
   at Roslyn.Utilities.AsyncLazy`1+Request[[System.__Canon, mscorlib, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089]].CompleteFromTaskSynchronouslyStub(System.Object)
   at System.Threading.Tasks.Task.InnerInvoke()
   at System.Threading.Tasks.Task.Execute()
   at System.Threading.Tasks.Task.ExecutionContextCallback(System.Object)
   at System.Threading.ExecutionContext.RunInternal(System.Threading.ExecutionContext, System.Threading.ContextCallback, System.Object, Boolean)
   at System.Threading.ExecutionContext.Run(System.Threading.ExecutionContext, System.Threading.ContextCallback, System.Object, Boolean)
   at System.Threading.Tasks.Task.ExecuteWithThreadLocal(System.Threading.Tasks.Task ByRef)
   at System.Threading.Tasks.Task.ExecuteEntry(Boolean)
   at System.Threading.Tasks.Task.System.Threading.IThreadPoolWorkItem.ExecuteWorkItem()
   at System.Threading.ThreadPoolWorkQueue.Dispatch()
   at System.Threading._ThreadPoolWaitCallback.PerformWaitCallback()
</Data>
  </EventData>
</Event>

[vladima]

@NoelAbrahams can you please tell:

• what is the size of the project in MB
• what is the amount of files in project?

[vladima]

Also if you are seeing this issue fairly regularly can you make a heap dump using 'procdump' at the moment when memory consumption is high and share it?

[NoelAbrahams]

@vladima,

what is the size of the project in MB
what is the amount of files in project?

I believe I have already communicated this to you.

I'll see if I can get a procdump.

[vladima]

Having procdump will help a lot.
I'm closing this issue as a dupe of #2566