You need the autoconf, automake, m4, pkg-config, git, libgtk-3-dev packages to run this script.
Do you have these packages installed?
1) Yes
2) No
#? 1
Cloning into 'arc-theme'...
remote: Counting objects: 10482, done.
remote: Total 10482 (delta 0), reused 0 (delta 0), pack-reused 10482
Receiving objects: 100% (10482/10482), 10.04 MiB | 1003.00 KiB/s, done.
Resolving deltas: 100% (7351/7351), done.
Checking connectivity... done.
Cloning into 'numix-icon-theme'...
remote: Counting objects: 98133, done.