anchor.diff:  
   Target "Test" (fun _ ->
     let testDlls = !!(basePath </> "*.Tests/bin/Debug/*.Tests.dll")
  -  testDlls 
  +  testDlls
     |> xUnit2 (fun p -> p)
   )
   
  
positive.code:       |> MSBuildRelease "" "Rebuild"
        |> ignore
  
    let test() =     
      let testDlls = !!(basePath </> "*.Tests/bin/Debug/*.Tests.dll")
      testDlls 
      |> xUnit2 (fun p -> { p with HtmlOutputPath = Some (testDir @@ "xunit.html") })
      
    let restorePackages() = 
      basePath </> "**/packages.config"
      |> RestorePackage (fun p ->
          { p with
  
negative.code:             OutputPath = (basePath </> "packages")
              Retries = 4 })
      |> ignore
  
    fun _ ->
      restorePackages()
      build()
  