Tar ball file issue travis

[vcoder-saxa]

Hi all,

I am currently encountering the following issue with the following line of the yml.
Error: "xz: (stdin): File format not recognized
tar: Child returned status 1
tar: Error is not recoverable: exiting now"

Line: "$ wget -qO- $URL | tar xJ -C sfdx --strip-components 1" when referencing the following variable
env:
matrix:
- URL=https://developer.salesforce.com/media/salesforce-cli/sfdx-linux-amd64.tar.xz

Guessing its an issue with what I am doing and not the script itself. Thanks.