these 2 derivations will be built:
  /nix/store/jqgrjahnfbmdz0dr45szbbh0dnl5kijm-nixos-test-driver-pg_repack.drv
  /nix/store/gwh3yadcx04jv8346vf00xvbn6rs9r4l-vm-test-run-pg_repack.drv
building '/nix/store/jqgrjahnfbmdz0dr45szbbh0dnl5kijm-nixos-test-driver-pg_repack.drv' on 'ssh-ng://nixbot-remote-build@78.232.36.247'