Cravy is 7-7 with a 3.97 ERA in 17 starts with Colorado Springs in 2015.
Guilmet was claimed off waivers from the Dodgers on July 31 and is with his fourth organization this season. He last pitched for Milwaukee on Monday, surrendering six runs on four hits in just one inning.
Brandon Curry is an associate reporter for MLB.com. This story was not subject to the approval of Major League Baseball or its clubs.