these 3 derivations will be built:
  /nix/store/20gkqs6mrgj653p7wr84k007skg5bf48-iets-fuzz-diff-0.0.0.drv
  /nix/store/alqc4f0vjcxxfpypzz9r6gb6621447hi-iets-fuzzers-0.0.0.drv
  /nix/store/qw9i1psvvd6fna5clh6qn3cmr739768r-iets-fuzz-nar-check.drv
building '/nix/store/alqc4f0vjcxxfpypzz9r6gb6621447hi-iets-fuzzers-0.0.0.drv' on 'grpc://farm.numtide.com:50051?client-cert=/run/secrets/vars/per-machine/bld1/nix-farm-ci/crt&client-key=/run/secrets/vars/per-machine/bld1/nix-farm-ci/key&connect-timeout=22&system=aarch64-linux'
could not copy /nix/store/lip3qi4na9sz2wbalxw9ds78qc606bxi-iets-fuzzers-0.0.0: error: gRPC FetchNars failed: failed to connect to all addresses; last error: UNKNOWN: ipv4:65.21.215.17:50051: handshaker shutdown
error: some outputs are unexpectedly invalid