Front brake melted shaved or warped

So I switched from the warp9 dirt rims to go for my first ride on the streets today and after a few red lights and getting about 20 km from my house my front break was making some noises. I went to brake and felt something like a warped rotor and immediately was worried my wheel was gonna fall off lol so I pulled over to see my brake disk and calliper fighting for the same space. I'm thinking I put my spacers in wrong cause they fell out a few times while changing it.
Any thoughts/any input  would be appreciated.
Thanks

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I would definitely check the spacers.

Do you have a stand or lift that allows you to support the bike with the entire front end off the ground?

You want that front wheel to pretty easily free spin with very minimal drag on disc from brake pads.

I'd bet, based on your post that either your spacers need to be switched, or perhaps your brake pads aren't "releasing" when you let off brakes. Perhaps forks are twisted a bit.   

Get front end elevated off ground. Might want to use a bungee cord or two to hold handlebars straight.
Spin that front wheel, squeeze brake. Let off brake spin front wheel. Repeat. Should be able to get a few complete rotations of wheel/tire without huge effort when not testing brake pad release.

You should hear a very minimal, but consistent noise as the front brake pads will evenly skim the brake disc, but the wheel should spin fairly easily. You should basically be able to "balance" your front wheel/tire assembly this way.

If you're hearing noise, nothing, noise, nothing....or wheel/tire just stops quickly without applying brake pressure, you've got some issues.

Thanks I don't have a stand I used a milk crate with a couple 2x4 which had the tire on the ground. Thanks for the input