To reproduce (with mixlib-archive 0.4.1) ``` curl -L https://supermarket.chef.io/cookbooks/magic/download -o magic.tgz ``` ``` require 'mixlib/archive' tar = Mixlib::Archive.new("magic.tgz") dir = '/tmp/tmp.Hxu9djBfyJ' FileUtils.mkdir(dir) tar.extract(dir) ``` This fails with: ``` ArgumentError: "\x80\x00\x00\x007\xB5\x91\x9E" is not an octal string from /usr/lib/ruby/2.5.0/rubygems/package/tar_header.rb:128:in `strict_oct' ``` First time I've seen this is trying to use `chef install` command on a Policyfile depending on `magic` cookbook.