Reported here: https://github.com/bitcoin/bitcoin/pull/10244#issuecomment-378035305

Travis log here: https://travis-ci.org/bitcoin/bitcoin/jobs/361243719#L2810

Note the JSON exception:

```
test_framework.authproxy.JSONRPCException: The mempool was not loaded yet (-1) 
```

That exception was introduced here: https://github.com/bitcoin/bitcoin/commit/cb1e319fe9e198c9c5cf5236fe9af5a3d748b9e8#diff-a0c8f511d90e83aa9b5857e819ced344R1617

cc @jtimon 
{
    std::unique_ptr<CCoinsViewCursor> pcursor(view->Cursor());
    assert(pcursor);
    CHashWriter ss(SER_GETHASH, PROTOCOL_VERSION);
    stats.hashBlock = pcursor->GetBestBlock();
    {
        LOCK(cs_main);
        stats.nHeight = LookupBlockIndex(stats.hashBlock)->nHeight;
    }
    ss << stats.hashBlock;
    uint256 prevkey;
    std::map<uint32_t, Coin> outputs;
    while (pcursor->Valid()) {
        boost::this_thread::interruption_point();
        COutPoint key;
        Coin coin;
        if (pcursor->GetKey(key) && pcursor->GetValue(coin)) {
            if (!outputs.empty() && key.hash != prevkey) {
                ApplyStats(stats, ss, prevkey, outputs);
                outputs.clear();
            }
            prevkey = key.hash;