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 
{
    
    bool needs_init = fReindex;
    if (!fReindex) {
        bool ret = LoadBlockIndexDB(chainparams);
        if (!ret) return false;
        needs_init = mapBlockIndex.empty();
    }
    if (needs_init) {
        
        
        
        
        
        LogPrintf("Initializing databases...\n");
    }
    return true;
}
bool CChainState::LoadGenesisBlock(const CChainParams& chainparams)