I have a '12 WRX Cobb ots stage 2 w/ catted DP.
I went to the track last night and did some hard launches between 4000 and 4500 rpm; I was slipping the clutch. This morning, car is cold and haven't been started or driven since I got home last night, I depressed the clutch and noticed this rusty squealing noise. I haven't noticed this noise prior to my track time. I will be driving my car today to see if I notice any clutch or transmission issues; but, if someone notices this same noise, please let me know.