this derivation will be built:
  /nix/store/94kspzaa2pg9ajckkbbnkgrl42bywvni-treefmt-check.drv
building '/nix/store/94kspzaa2pg9ajckkbbnkgrl42bywvni-treefmt-check.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=20&system=aarch64-linux'
error: gRPC QueryValidPaths on 'farm.numtide.com:50051' failed: Cancelling all calls
       hint: Set NIX_GRPC_DEBUG=1 for a handshake trace.
error: Cannot build '/nix/store/94kspzaa2pg9ajckkbbnkgrl42bywvni-treefmt-check.drv'.
       Reason: builder failed with exit code 1.
       Output paths:
         /nix/store/lkxdh2kxmildwni2pklqzkfp922psnry-treefmt-check