this derivation will be built:
  /nix/store/4g4d9mdav7bvzvss8zhvrvy6h8i6lwvw-treefmt-check.drv
building '/nix/store/4g4d9mdav7bvzvss8zhvrvy6h8i6lwvw-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=21&system=aarch64-linux'
building '/nix/store/4g4d9mdav7bvzvss8zhvrvy6h8i6lwvw-treefmt-check.drv' on farm.numtide.com:50051
treefmt-check> elastic-arm-04535f05: building 4g4d9mdav7bvzvss8zhvrvy6h8i6lwvw-treefmt-check.drv
treefmt-check> traversed 555 files
treefmt-check> emitted 374 files for processing
treefmt-check> formatted 374 files (0 changed) in 3.828s
could not copy /nix/store/bmlhs7xbbd4z5qmf20d7i7v7f064y9nm-treefmt-check: 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