Execution skipped because --no-exec was passed
Traceback (most recent call last):
  File "bin/osh", line 374, in <module>
    sys.exit(main(sys.argv))
  File "bin/osh", line 364, in main
    return OshMain(main_argv)
  File "bin/osh", line 329, in OshMain
    fix.PrintAsOil(arena, node)
  File "/home/andy/git/oil/bin/../osh/fix.py", line 71, in PrintAsOil
    fixer.DoCommand(node, None, at_top_level=True)  # no local symbols yet
  File "/home/andy/git/oil/bin/../osh/fix.py", line 487, in DoCommand
    self.DoCommand(child, local_symbols)
  File "/home/andy/git/oil/bin/../osh/fix.py", line 647, in DoCommand
    self.DoCommand(child, new_local_symbols)
  File "/home/andy/git/oil/bin/../osh/fix.py", line 550, in DoCommand
    self.DoRedirect(r, local_symbols)
  File "/home/andy/git/oil/bin/../osh/fix.py", line 265, in DoRedirect
    self.DoWordInCommand(node.arg_word, local_symbols)
  File "/home/andy/git/oil/bin/../osh/fix.py", line 932, in DoWordInCommand
    assert right_spid != -1, right_spid
AssertionError: -1