this derivation will be built:
  /nix/store/74dqzk00baqd33n6gl0ssm63143ydy51-spec-nixfmt.drv
74dqzk00baqd33n6gl0ssm63143ydy51-spec-nixfmt.drv: elastic-arm-30402bd3: not scheduled here: 74dqzk00baqd33n6gl0ssm63143ydy51-spec-nixfmt.drv, asking the scheduler again