message: Change xfail to skipIf. The exact condition is really difficult to get
  right and doesn't add much signal.
diff: @@ -9,7 +9,7 @@ class TestUnicodeSymbols(TestBase):
  mydir = TestBase.compute_mydir(__file__)
  - @expectedFailureAll(compiler="clang", compiler_version=['<', '7.0'])
  + @skipIf(compiler="clang", compiler_version=['<', '7.0'])
  def test_union_members(self):
  self.build()
  spec = lldb.SBModuleSpec()
  