message: Stepping out of protocol conforming functions has broken.
  This causes a failure in the Swift stepping tests.  Xfailing the tests
  till I can figure out what changed.
  <rdar://problem/31515444>
diff: @@ -26,6 +26,7 @@ class TestSwiftStepping(lldbtest.TestBase):
  mydir = lldbtest.TestBase.compute_mydir(__file__)
  @decorators.swiftTest
  + @decorators.expectedFailureAll(bugnumber="rdar://31515444")
  def test_swift_stepping(self):
  """Tests that we can step reliably in swift code."""
  self.build()
  