message: Explicitly set py3 as the interpreter used by symbol-check.py
diff: -#!/usr/bin/python2
  +#!/usr/bin/python3
  # Copyright (c) 2014 Wladimir J. van der Laan
  # Distributed under the MIT software license, see the accompanying
  # file COPYING or http://www.opensource.org/licenses/mit-license.php.
  @@ -11,7 +11,6 @@ Example usage:
  find ../gitian-builder/build -type f -executable | xargs python contrib/devtools/symbol-check.py
  '''
  -from __future__ import division, print_function, unicode_literals
  import subprocess
  import re
  import sys
  