What is a group of Roustabouts called?

A group of roustabouts is commonly called a Circus.

A collective noun for roustabouts, a term typically associated with workers employed in the oil and gas industry, would be a crew. A crew of roustabouts consists of a coordinated group of versatile, skilled laborers who perform a wide range of physical tasks on drilling rigs, pipelines, and other oilfield sites. These individuals work together collaboratively, utilizing their physical strength, mechanical competency, and teamwork abilities to accomplish various duties such as assembling and disassembling equipment, maintaining rig operations, transporting materials, and assisting other personnel. With a resilience forged through demanding working conditions, long hours, and often in remote offshore or land-based locations, this crew of roustabouts demonstrates exceptional teamwork, adaptability, and efficiency, ensuring the smooth operations necessary for success in the oil and gas industry.