deep-mining-log: need ring buffer to be one bigger for all-blocks-mined case
deep-mining-log: need ring buffer to be one bigger for all-blocks-mined case

maran/go-ethereum,maran/go-ethereum,maran/go-ethereum,maran/go-ethereum,maran/go-ethereum,maran/go-ethereum,maran/go-ethereum,maran/go-ethereum,maran/go-ethereum