Instruct: Classify Amazon reviews into positive or negative sentiment
Query: The pan rusted

This product disappointed me. The directions said it was dishwasher safe, so I ran it through the dishwasher prior to using it. When I took it out of the dishwasher I saw rust along the bottom of one whole side of the pan. I am in the process of returning this product and will purchase William Sonoma's Crown Muffin Pan instead.