swift: make sensible error if the user forgets the container - fixes #1470
swift: make sensible error if the user forgets the container - fixes #1470

olihey/rclone,yonjah/rclone,seuffert/rclone,olihey/rclone,B4dM4n/rclone,yonjah/rclone,ncw/rclone,olihey/rclone,olihey/rclone,B4dM4n/rclone,seuffert/rclone,yonjah/rclone,B4dM4n/rclone,B4dM4n/rclone,ncw/rclone,ncw/rclone,seuffert/rclone,ncw/rclone,yonjah/rclone,seuffert/rclone