Hexxit Server 'Rawr Null'?

[Madman2429]

Hey, just noticed that when I'm running my server the info panel is being flooded with messages that read:

2013-06-26 13:19:21 [iNFO] [sTDOUT] Rawr Null

These happen every two seconds, and come in batches of 5-16 (seems to shift and change) no idea what is causing it at all. No crashes or significant lag issues just makes the server control panel nearly unusable.

Edit: Looked into my server logs and the logs don't show any record of these messages, even though I could obviously see them. Not sure if helpful info but just posting more details.

Edit2: Found the problem, was a vanilla redstone circuit causing the spamming messages. Still unsure why it was causing them but it came from a line of redstone repeaters that I was using as a timer to automatically pour metal out of my tinkers' construct smelter. The problem appears to exclusively be from redstone repeaters interacting with the tinkers' construct seared faucet