message: Fee tolerance should be at least one satoshi
  This accounts for any rounding errors when minrelaytxfee is less
  than 500 satoshis.
diff: @@ -42,6 +42,8 @@ class RawTransactionsTest(BitcoinTestFramework):
  # = 2 bytes * minRelayTxFeePerByte
  feeTolerance = 2 * min_relay_tx_fee/1000
  + if feeTolerance < 0.00000001:
  + feeTolerance = 0.00000001
  self.nodes[2].generate(1)
  self.sync_all()
  