I get a mesage that i don't understand at all when I click play

it tells me this when i click play

Completely ignored arguments: [--nativeLauncherVersion, 1206]
[12:39:14] [Client thread/INFO]: Setting user: Ferocious_Death
[12:39:15] [Client thread/INFO]: LWJGL Version: 2.9.4

someone please tell me how to fix this