rpc: log an exception that may happen while processing an RPC message
rpc: log an exception that may happen while processing an RPC message

Message-Id: <4edb08949a27d34d402a94adae20a85ee3b1b0fe@scylladb.com>

avikivity/seastar,syuu1228/seastar,avikivity/seastar,scylladb/seastar,dreamsxin/seastar,dreamsxin/seastar,syuu1228/seastar,avikivity/seastar,cloudius-systems/seastar,scylladb/seastar,cloudius-systems/seastar,dreamsxin/seastar,syuu1228/seastar,scylladb/seastar,cloudius-systems/seastar