warning: could not read HEAD ref from repo at '/var/lib/nixbot/worktrees/effect-942', using 'master'
building '/nix/store/93wzbvcjskalvzxs5w53id29xsagnbps-inputDerivation-effect-env.drv' on 'ssh-ng://nix@jamie'...
copying path '/nix/store/zi2bj2hlavv8q743li2s9diqbcpmrf9b-hello-2.12.3' from 'https://cache.nixos.org'...
building '/nix/store/93wzbvcjskalvzxs5w53id29xsagnbps-inputDerivation-effect-env.drv'...
copying 1 paths...
copying path '/nix/store/xn98x46g7c823qbdhdajvdwa21rf3jqw-inputDerivation-effect-env' from 'ssh-ng://nix@jamie'...