EmptyGlobalAssignment: version 3.0.5: line 20: empty global assignment: IUSE=""
  EmptyGlobalAssignment: version 3.0.6: line 20: empty global assignment: IUSE=""
  EmptyGlobalAssignment: version 3.1.0: line 20: empty global assignment: IUSE=""
  EmptyGlobalAssignment: version 3.2.0: line 20: empty global assignment: IUSE=""