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  open OLDERR, '>&STDERR' or croak "cannot dup stderr: $!";
  open STDERR, '>&STDOUT' or croak "cannot redirect stderr to stdout: 
+$!";

  if (my $fh = new IO::File '-|') { ...

  package NVC::Log::STDERR;
  use strict;
...
    my $self = shift;
    $log->die(join '', @_);
  }