Gov’t Mule guitarist-singer Warren Haynes, with his shoulder-length gray hair and ever-present smile, appeared to be enjoying his time at Rothbury more than anyone (including the guy who fashioned a hat from a hollowed-out watermelon and fell asleep/passed out in Sherwood Forest). He jammed with Grateful Dead bassist Phil Lesh, paid homage to the host state by performing a tune alongside Michigan bluesman Larry McCray and unearthed the weekend’s best cover when he belted out a moody version of Temple of the Dog’s “Hunger Strike.”