these 3 derivations will be built:
  /nix/store/kx4hzsl20znfjy79fxk6dzw1pl8nwnq3-mkEffect-root.drv
  /nix/store/p1y3qhq9x1dfacqq1vc5hikq3nkcag0j-nixbot-pr-comment.drv
  /nix/store/5sdphzwnngzapyvhi6rk7b1l4hmg8mc1-inputDerivation-effect-update-packages.drv
building '/nix/store/5sdphzwnngzapyvhi6rk7b1l4hmg8mc1-inputDerivation-effect-update-packages.drv'...