message: Ignore unicode decode errors in test suite's encoded_file class
  These happen in a couple of tests when lldb tries to pretty print a
  const char * variable in the inferior which points to garbage. Instead,
  we have the python replace the invalid sequences with the unicode
  replacement character.
diff: @@ -31,7 +31,7 @@ def _encoded_write(old_write, encoding):
  # If we were asked to write a `str` (in Py2) or a `bytes` (in Py3) decode it
  # as unicode before attempting to write.
  if isinstance(s, six.binary_type):
  - s = s.decode(encoding)
  + s = s.decode(encoding, "replace")
  return old_write(s)
  return impl
  