travis log: https://travis-ci.org/bitcoin/bitcoin/jobs/327785286

```
2018-01-11 17:49:08.016000 TestFramework (INFO): Sending from node 1 (['-addresstype=p2sh-segwit']) with multisig using default
2018-01-11 17:49:10.096000 TestFramework (INFO): Sending from node 2 (['-addresstype=p2sh-segwit', '-changetype=bech32']) with multisig using default
2018-01-11 17:49:12.492000 TestFramework (ERROR): Assertion failed
Traceback (most recent call last):
  File "/home/travis/build/bitcoin/bitcoin/build/bitcoin-i686-pc-linux-gnu/test/functional/test_framework/test_framework.py", line 118, in main
    self.run_test()
  File "/home/travis/build/bitcoin/bitcoin/build/bitcoin-i686-pc-linux-gnu/test/functional/address_types.py", line 183, in run_test
    assert_equal(unconf_balances[to_node], to_send * 10 * (2 + n))
  File "/home/travis/build/bitcoin/bitcoin/build/bitcoin-i686-pc-linux-gnu/test/functional/test_framework/util.py", line 38, in assert_equal
    raise AssertionError("not(%s)" % " == ".join(str(arg) for arg in (thing1, thing2) + args))
AssertionError: not(0E-8 == 714.73999460)
if (!request.params[2].isNull())
        fMempool = request.params[2].get_bool();
    Coin coin;
    if (fMempool) {
        LOCK(mempool.cs);
        CCoinsViewMemPool view(pcoinsTip.get(), mempool);
        if (!view.GetCoin(out, coin) || mempool.isSpent(out)) {
            return NullUniValue;
        }
    } else {
        if (!pcoinsTip->GetCoin(out, coin)) {
            return NullUniValue;
        }
    }
    BlockMap::iterator it = mapBlockIndex.find(pcoinsTip->GetBestBlock());
    CBlockIndex *pindex = it->second;
    ret.push_back(Pair("bestblock", pindex->GetBlockHash().GetHex()));
    if (coin.nHeight == MEMPOOL_HEIGHT) {
        ret.push_back(Pair("confirmations", 0));
    } else {
        ret.push_back(Pair("confirmations", (int64_t)(pindex->nHeight - coin.nHeight + 1)));
    }
    ret.push_back(Pair("value", ValueFromAmount(coin.out.nValue)));
    UniValue o(UniValue::VOBJ);
    ScriptPubKeyToUniv(coin.out.scriptPubKey, o, true);
    ret.push_back(Pair("scriptPubKey", o));
    ret.push_back(Pair("coinbase", (bool)coin.fCoinBase));
    return ret;
}
UniValue verifychain(const JSONRPCRequest& request)