Using obelisk-git, here's the message I get on stdout:

ERROR [poller]: Storing block
000000000000000d05c31485c532503939ca0b88d7e322dff79900ee6cdd5ed4:
Validation of inputs failed

https://blockchain.info/block/000000000000000d05c31485c532503939ca0b88d7e322dff79900ee6cdd5ed4

It probably gets called from validate_transaction::handle_previous_tx,
here:

// Should check for are inputs standard here...
if (!connect_input(tx_, current_input_, previous_tx,
    parent_height, last_block_height_, value_in_))
{
    handle_validate_(error::validate_inputs_failed, {current_input_});
    return;
}

There are 5 `return false` statements in connect_input(), I'm not sure
about how to go about finding which test returns false.