>>> Downloading 'http://www.introversion.co.uk/defcon/downloads/defcon_1.6-1_amd64.deb'
--2020-11-07 21:07:01--  http://www.introversion.co.uk/defcon/downloads/defcon_1.6-1_amd64.deb
Resolving www.introversion.co.uk... 52.55.16.22
Connecting to www.introversion.co.uk|52.55.16.22|:80... connected.
HTTP request sent, awaiting response... 302 Found
Location: https://www.introversion.co.uk/defcon/downloads/defcon_1.6-1_amd64.deb [following]
--2020-11-07 21:07:01--  https://www.introversion.co.uk/defcon/downloads/defcon_1.6-1_amd64.deb
Connecting to www.introversion.co.uk|52.55.16.22|:443... connected.
HTTP request sent, awaiting response... 302 Found
Location: https://www.introversion.co.uk//downloads/defcon_1.6-1_amd64.deb [following]
--2020-11-07 21:07:01--  https://www.introversion.co.uk//downloads/defcon_1.6-1_amd64.deb
Reusing existing connection to www.introversion.co.uk:443.
HTTP request sent, awaiting response... 404 Not Found
2020-11-07 21:07:02 ERROR 404: Not Found.

!!! Couldn't download 'defcon_1.6-1_amd64.deb'. Aborting.
 * Fetch failed for 'games-strategy/defcon-demo-1.60-r1', Log file:
 *  '/var/log/portage/games-strategy:defcon-demo-1.60-r1:20201107-200701.log'