message: test: Assert that exit code indicates failure
diff: @@ -494,6 +494,7 @@ class TestNode():
  self.start(extra_args, stdout=log_stdout, stderr=log_stderr, *args, **kwargs)
  ret = self.process.wait(timeout=self.rpc_timeout)
  self.log.debug(self._node_msg(f'bitcoind exited with status {ret} during initialization'))
  + assert ret != 0 # Exit code must indicate failure
  self.running = False
  self.process = None
  # Check stderr for expected message
  