Gemelli with Lump Crab, Mushrooms and Asparagus in a Lemon Butter Sauce

I bought some lump crab from Costco and couldn't decide what to make with it. I was craving pasta so I looked through my refrigerator to see what I could use in a pasta dish. I found mushrooms, asparagus, crab, lemons, shallots, Parmesan and garlic. I thought all of those ingredients would be tasty together and I was right. I used a bit of pasta water and butter to make the sauce a bit thicker