these 2 derivations will be built:
  /nix/store/nw0ba62x9v1c83qli37skwdp4yjckbw6-card_game.zip.drv
  /nix/store/671hy7jakih2yq9z4pj4yw01jrni16jz-ue4demos-card_game.drv
building '/nix/store/vgy8wf6symyqvvckhm1liwg1c0jq8nyg-card_game.zip.drv'
card_game.zip> 
card_game.zip> trying https://ludios.org/mirror/ue4demos/card_game.zip
card_game.zip>   % Total    % Received % Xferd  Average Speed   Time    Time     Time  Current
card_game.zip>                                  Dload  Upload   Total   Spent    Left  Speed
card_game.zip> 100 46.3M  100 46.3M    0     0  38.7M      0  0:00:01  0:00:01 --:--:-- 40.1M
building '/nix/store/671hy7jakih2yq9z4pj4yw01jrni16jz-ue4demos-card_game.drv'
ue4demos-card_game> Archive:  /nix/store/r0n4sn52jrp88i7y0zrb0xwjcna35a7i-card_game.zip
ue4demos-card_game>    creating: Card Game/
ue4demos-card_game>    creating: Card Game/Card/
ue4demos-card_game>    creating: Card Game/Card/Content/
ue4demos-card_game>    creating: Card Game/Card/Content/Paks/
ue4demos-card_game>   inflating: Card Game/Card/Content/Paks/Card-LinuxNoEditor.pak  
ue4demos-card_game>    creating: Card Game/Card/Saved/
ue4demos-card_game>    creating: Card Game/Card/Saved/Config/
ue4demos-card_game>   inflating: Card Game/Card/Saved/Config/controller.vdf  
ue4demos-card_game>    creating: Card Game/Engine/
ue4demos-card_game>    creating: Card Game/Engine/Binaries/
ue4demos-card_game>    creating: Card Game/Engine/Binaries/Linux/
ue4demos-card_game>   inflating: Card Game/Engine/Binaries/Linux/Card  
ue4demos-card_game>   inflating: Card Game/Engine/Binaries/Linux/libicudata.so  
ue4demos-card_game>   inflating: Card Game/Engine/Binaries/Linux/libicui18n.so  
ue4demos-card_game>   inflating: Card Game/Engine/Binaries/Linux/libicuio.so  
ue4demos-card_game>   inflating: Card Game/Engine/Binaries/Linux/libicule.so  
ue4demos-card_game>   inflating: Card Game/Engine/Binaries/Linux/libiculx.so  
ue4demos-card_game>   inflating: Card Game/Engine/Binaries/Linux/libicutu.so  
ue4demos-card_game>   inflating: Card Game/Engine/Binaries/Linux/libicuuc.so  
ue4demos-card_game>   inflating: Card Game/Engine/Binaries/Linux/libopenal.so.1  
ue4demos-card_game> Card Game

upload niks3: ok