Robin in the warehouse, what to do?

A robin made a nest in the warehouse where my DH works. She comes and goes all day, and they try to make sure she is inside on the eggs when they close up at night. They put water in there, too. They are wondering if they should move the nest outside before this weekend when they will be gone for 3 days. It gets very hot if the doors aren't open. The weather has been cool up until this week but it will be much hotter over the weekend. Any suggestions?

Can they leave a small opening for it anywhere?

Or put up a bird table well stocked with mealworms, fishermens' bait worms, etc?

Resin