I ran into this message as well. I have several Raspberry PI 2 Bs and this one does the Can't access tty: job control turned off prompt immediately. The other Raspberry PI boards do not. I can exchange SDcards and the problem sticks to the particular Raspberry PI.
I can tell you that I did an evil thing to the GPIO header on this particular board, by accident. I suspect I hurt the GPIO inputs or outputs from the CPU.