Crash in ExtractMethod refactoring suggestion...

[KevinH-MS]

Version Used:
d15rel 26417.0-Preview

Steps to Reproduce:
I haven't been able to narrow this down, but I'm hitting it quite a bit when browsing through my solution. Specifically, LUT repo, commit 99bc272cdeac224793f4ced3ff4849837bf63f96, doing "find next" on ".DoFullBuild" in BuildManagerState.cs

Expected Behavior:
No Crash

Actual Behavior:

InvalidOperationException: Unexpected false
   at Roslyn.Utilities.Contract.ThrowIfFalse(Boolean condition, String message)
   at Microsoft.CodeAnalysis.ExtractMethod.ExtractMethodMatrix.GetVariableStyle(Boolean captured, Boolean dataFlowIn, Boolean dataFlowOut, Boolean alwaysAssigned, Boolean variableDeclared, Boolean readInside, Boolean writtenInside, Boolean readOutside, Boolean writtenOutside, Boolean unsafeAddressTaken) in E:\A\_work\24\s\src\Features\Core\Portable\ExtractMethod\ExtractMethodMatrix.cs:line 78
   at Microsoft.CodeAnalysis.ExtractMethod.MethodExtractor.Analyzer.GetVariableStyle(Dictionary`2 symbolMap, ISymbol symbol, SemanticModel model, ITypeSymbol type, Boolean captured, Boolean dataFlowIn, Boolean dataFlowOut, Boolean alwaysAssigned, Boolean variableDeclared, Boolean readInside, Boolean writtenInside, Boolean readOutside, Boolean writtenOutside, Boolean unsafeAddressTaken) in E:\A\_work\24\s\src\Features\Core\Portable\ExtractMethod\MethodExtractor.Analyzer.cs:line 461
   at Microsoft.CodeAnalysis.ExtractMethod.MethodExtractor.Analyzer.GenerateVariableInfoMap(SemanticModel model, DataFlowAnalysis dataFlowAnalysisData, Dictionary`2 symbolMap) in E:\A\_work\24\s\src\Features\Core\Portable\ExtractMethod\MethodExtractor.Analyzer.cs:line 427
   at Microsoft.CodeAnalysis.ExtractMethod.MethodExtractor.Analyzer.<AnalyzeAsync>d__10.MoveNext() in E:\A\_work\24\s\src\Features\Core\Portable\ExtractMethod\MethodExtractor.Analyzer.cs:line 74
   at System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess(Task task) in f:\dd\ndp\clr\src\BCL\system\runtime\compilerservices\TaskAwaiter.cs:line 184
   at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task) in f:\dd\ndp\clr\src\BCL\system\runtime\compilerservices\TaskAwaiter.cs:line 156
   at Microsoft.CodeAnalysis.ExtractMethod.MethodExtractor.<ExtractMethodAsync>d__13.MoveNext() in E:\A\_work\24\s\src\Features\Core\Portable\ExtractMethod\MethodExtractor.cs:line 40
   at System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess(Task task) in f:\dd\ndp\clr\src\BCL\system\runtime\compilerservices\TaskAwaiter.cs:line 184
   at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task) in f:\dd\ndp\clr\src\BCL\system\runtime\compilerservices\TaskAwaiter.cs:line 156
   at Microsoft.CodeAnalysis.ExtractMethod.AbstractExtractMethodService`3.<ExtractMethodAsync>d__2.MoveNext() in E:\A\_work\24\s\src\Features\Core\Portable\ExtractMethod\AbstractExtractMethodService.cs:line 42
   at System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess(Task task) in f:\dd\ndp\clr\src\BCL\system\runtime\compilerservices\TaskAwaiter.cs:line 184
   at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task) in f:\dd\ndp\clr\src\BCL\system\runtime\compilerservices\TaskAwaiter.cs:line 156
   at Microsoft.CodeAnalysis.CodeRefactorings.ExtractMethod.ExtractMethodCodeRefactoringProvider.<GetCodeActionAsync>d__1.MoveNext() in E:\A\_work\24\s\src\Features\Core\Portable\CodeRefactorings\ExtractMethod\AbstractExtractMethodCodeRefactoringProvider.cs:line 61
   at System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess(Task task) in f:\dd\ndp\clr\src\BCL\system\runtime\compilerservices\TaskAwaiter.cs:line 184
   at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task) in f:\dd\ndp\clr\src\BCL\system\runtime\compilerservices\TaskAwaiter.cs:line 156
   at Microsoft.CodeAnalysis.CodeRefactorings.ExtractMethod.ExtractMethodCodeRefactoringProvider.<ComputeRefactoringsAsync>d__0.MoveNext() in E:\A\_work\24\s\src\Features\Core\Portable\CodeRefactorings\ExtractMethod\AbstractExtractMethodCodeRefactoringProvider.cs:line 47
   at System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess(Task task) in f:\dd\ndp\clr\src\BCL\system\runtime\compilerservices\TaskAwaiter.cs:line 184
   at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task) in f:\dd\ndp\clr\src\BCL\system\runtime\compilerservices\TaskAwaiter.cs:line 156
   at Microsoft.CodeAnalysis.CodeRefactorings.CodeRefactoringService.<GetRefactoringFromProviderAsync>d__8.MoveNext() in E:\A\_work\24\s\src\Features\Core\Portable\CodeRefactorings\CodeRefactoringService.cs:line 142

[KevinH-MS]

Looks to be dupe of #17165