Unfortunately, Google hasn't done the leg work to make Chrome Recovery Utility work on Linux. I'll give you some commands to run to get an installer made via Linux.
0) Unzip the CloudReady binary - it has to be just .bin
--- you may need to install a untility like 7zip to handle this large of a zip file. Reports have come in that utilities like "unzip" can result in corrupted images
1) Get your USB stick plugged in, and remove ALL OTHER removable media.
2) Open a cmd line/ terminal
3) run "sudo fdisk -l" and inspect the output: you should see your hard drive and the USB stick listed as /dev/sda and /dev/sdb (if not, proceed very carefully and consider posting the output here if you're not sure)
4) If the USB is definitely sdb, you can use 'cd' to go to the same folder as where you downloaded the cloudready.bin file and run this :
"sudo dd if=cloudready.bin of=/dev/sdX bs=4M"
Where "cloudready.bin" needs to be replaced with the exact name of the binary, and "/dev/sdX" needs to be changed to /dev/sdb BUT ONLY AS LONG AS YOU ARE SURE THE USB IS SDB.
A lot of emphasis here, because whatever device is there will be completely erased.
Once the operation finishes you have the same installer the Chrome Recovery Tool would have made.