gh_users is just a list of users, not a dict

playbooks/roles/gh_users/tasks/main.yml

@@ -39,8 +39,8 @@
 
 - name: gh_users | copy github key[s] to .ssh/authorized_keys
   get_url:
-    url=https://github.com/{{ item.user }}.keys
-    dest=/home/{{ item.user }}/.ssh/authorized_keys mode=0600
-    owner={{ item.user }} group={{ item.user }}
+    url=https://github.com/{{ item }}.keys
+    dest=/home/{{ item }}/.ssh/authorized_keys mode=0600
+    owner={{ item }} group={{ item }}
   with_items: gh_users