these 3 derivations will be built:
  /nix/store/clprz153jp8f8br5bqw71ylljcsnlyl3-iets-fuzz-diff-0.0.0.drv
  /nix/store/r4gwhg1v138izn06wj468yj2xiwjavbg-iets-fuzzers-0.0.0.drv
  /nix/store/7rnw1rgqhn12q79zmmh0169fk8hy6rsv-iets-fuzz-nar-check.drv
could not copy /nix/store/b7505p3w4fa7knsrfgrk314iyzcgmjng-iets-fuzzers-0.0.0: error: gRPC FetchNars failed: Stream removed (sendmsg: Broken pipe (32))
error: some outputs are unexpectedly invalid