this derivation will be built:
  /nix/store/j5k7zwkw587ajs2mkhnfr0zvgp0rqc8s-check-t3code.drv
could not copy /nix/store/pca9dkka8jczbplaagsw5dvk524qgml1-check-t3code: 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