this derivation will be built:
  /nix/store/1b803mn6x6kqfkyvh7rfwaf14sfsv0mb-treefmt-check.drv
building '/nix/store/1b803mn6x6kqfkyvh7rfwaf14sfsv0mb-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'
building '/nix/store/1b803mn6x6kqfkyvh7rfwaf14sfsv0mb-treefmt-check.drv' on farm.numtide.com:50051
treefmt-check> elastic-arm-8f6abe2e: building 1b803mn6x6kqfkyvh7rfwaf14sfsv0mb-treefmt-check.drv
treefmt-check> traversed 554 files
treefmt-check> emitted 375 files for processing
treefmt-check> formatted 375 files (0 changed) in 5.728s
could not copy /nix/store/l5a0ilwqihmx5xrhiflns4yk5dy85lql-treefmt-check: error: gRPC FetchNars failed: failed to connect to all addresses; last error: UNAVAILABLE: ipv4:65.21.215.17:50051: Handshake read failed (Endpoint closing)
error: some outputs are unexpectedly invalid