Xubuntu Minimal fails to install when using LVM + encryption

[Aaron Rainbolt]

Steps to reproduce:

1. Launch the installer.
2. Proceed through accepting default values.
3. When prompted how to install Xubuntu, use the "Erase disk" option, then click "Advanced options" and select LVM + encryption. (I'm not sure what the exact words here are as I did the installation in Spanish for testing purposes and couldn't read it.)
4. Finish the rest of the installer wizard, and allow the installation to begin.

Expected result: The installation should succeed.

Actual result: The installation fails.

Relevant logs (typed across, may contain typos):

curtin.util.ProcessExecution Error: Unexpected error while running command.
Command: ['cryptsetup', 'luksFormat', '/dev-sda3', '/tmp/luks-key-nubsqc2w']
Exit code: -
Reason: [Errno 2] No such file or directory: 'cryptsetup'

Suggested solution: Seed cryptsetup in Xubuntu Minimal.

[Ubuntu QA Website (ubuntuqa)]

This bug has been reported on the Ubuntu ISO testing tracker.

A list of all reports related to this bug can be found here:
http://iso.qa.ubuntu.com/qatracker/reports/bugs/2063366