this derivation will be built:
  /nix/store/5s7y7bxr0d7haii0wphgdkx84xvyxavn-iets-fuzz-nar-check.drv
scheduler at farm.numtide.com:50051: no healthy upstream, reconnecting
scheduler at farm.numtide.com:50051: no healthy upstream, reconnecting
scheduler at farm.numtide.com:50051: no healthy upstream, reconnecting
scheduler at farm.numtide.com:50051: no healthy upstream, reconnecting