Major Description
The new Fetcher which is now used by default handles the robots file directly instead of relying on the protocol. The options Protocol.CHECK_BLOCKING and Protocol.CHECK_ROBOTS are set to false to prevent fetching the robots.txt twice (in Fetcher + in protocol), which avoids calling robots.isAllowed. However in practice the robots file is still fetched as there is a call to robots.getCrawlDelay() a bit further which is not covered by the if (Protocol.CHECK_ROBOTS).