this derivation will be built:
  /nix/store/rl84n526kng9770y1riccblhzsnk308s-treefmt-check.drv
building '/nix/store/rl84n526kng9770y1riccblhzsnk308s-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/rl84n526kng9770y1riccblhzsnk308s-treefmt-check.drv' on farm.numtide.com:50051
treefmt-check> elastic-arm-e65ee682: building rl84n526kng9770y1riccblhzsnk308s-treefmt-check.drv
treefmt-check> traversed 555 files
treefmt-check> emitted 374 files for processing
treefmt-check> formatted 374 files (0 changed) in 4.437s
could not copy /nix/store/0z2vdwhis8xxmhcnxi1amcbnybzjcrl3-treefmt-check: error: gRPC FetchNars failed: failed to connect to all addresses; last error: UNKNOWN: ipv4:127.0.0.2:50051: handshaker shutdown
error: some outputs are unexpectedly invalid