anchor.diff:        member GetCheckResultsAndImplementationsForProject : unit -> PartialCheckResults * IL.ILAssemblyRef * Build.IRawFSharpAssemblyContents option 
   
         /// Get the logical time stamp that is associated with the output of the project if it were gully built immediately
  -      member GetLogicalTimeStampForProject: unit -> System.DateTime
  +      member GetLogicalTimeStampForProject: unit -> DateTime
   
         /// Await the untyped parse results for a particular slot in the vector of parse results.
         ///
  
positive.code: 
        static member TryCreateBackgroundBuilderForProjectOptions : scriptClosureOptions:LoadClosure option * sourceFiles:string list * commandLineArgs:string list * projectReferences: IProjectReference list * projectDirectory:string * useScriptResolutionRules:bool * isIncompleteTypeCheckEnvironment : bool -> IncrementalBuilder option * FSharpErrorInfo list
  
  [<System.Obsolete("This type has been renamed to FSharpErrorInfo")>]
  /// Renamed to FSharpErrorInfo
  type ErrorInfo = FSharpErrorInfo
  
  
negative.code: // Implementation details used by other code in the compiler    
  [<Sealed>]
  type internal ErrorScope = 
      interface IDisposable
      new : unit -> ErrorScope
      member ErrorsAndWarnings : FSharpErrorInfo list
      static member Protect<'a> : range -> (unit->'a) -> (string->'a) -> 'a
  