this derivation will be built:
  /nix/store/y1w1l4rkgi05ahrkkrkxnlv6dlr8xlf6-treefmt-check.drv
building '/nix/store/y1w1l4rkgi05ahrkkrkxnlv6dlr8xlf6-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=23&system=aarch64-linux'
bld4: building y1w1l4rkgi05ahrkkrkxnlv6dlr8xlf6-treefmt-check.drv
traversed 517 files
emitted 354 files for processing
formatted 354 files (0 changed) in 5.485s
bld4: publish failed: error: niks3 push: getting path info: command failed: nix --extra-experimental-features nix-command path-info --recursive --json -- /nix/store/41w5slva7zm04yp7rk70r9pfp4d0rd9y-treefmt-check, retrying elsewhere
upstream connect error or disconnect/reset before headers. reset reason: remote connection failure, retrying elsewhere
upstream connect error or disconnect/reset before headers. reset reason: remote connection failure, retrying elsewhere
upstream connect error or disconnect/reset before headers. reset reason: connection timeout, retrying elsewhere
upstream connect error or disconnect/reset before headers. reset reason: remote connection failure, retrying elsewhere
error: gRPC BuildDerivation on 'farm.numtide.com:50051' failed: upstream connect error or disconnect/reset before headers. reset reason: remote connection failure
       hint: Set NIX_GRPC_DEBUG=1 for a handshake trace.
error: Cannot build '/nix/store/y1w1l4rkgi05ahrkkrkxnlv6dlr8xlf6-treefmt-check.drv'.
       Reason: builder failed with exit code 1.
       Output paths:
         /nix/store/41w5slva7zm04yp7rk70r9pfp4d0rd9y-treefmt-check