this derivation will be built:
  /nix/store/55a8hfvdznarh2iiyiyspzkl59i8j4fz-updater-tests-check.drv
error: gRPC AddMultipleToStore on 'farm.numtide.com:50051' failed: Cancelling all calls
       hint: Set NIX_GRPC_DEBUG=1 for a handshake trace.
error: Cannot build '/nix/store/55a8hfvdznarh2iiyiyspzkl59i8j4fz-updater-tests-check.drv'.
       Reason: builder failed with exit code 1.
       Output paths:
         /nix/store/p1d1npvbn6sazgyncqrzihwa7v7vd0pi-updater-tests-check