this derivation will be built:
  /nix/store/ppr0pb5vqbgb9if3zbcyh54y54kybvvv-ubuntu-26.04-server-cloudimg-arm64.img.drv
building '/nix/store/hzhfhg7mm8rdpn85zm5pzxzg15906xh4-ubuntu-26.04-server-cloudimg-arm64.img.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'
building '/nix/store/hzhfhg7mm8rdpn85zm5pzxzg15906xh4-ubuntu-26.04-server-cloudimg-arm64.img.drv' on farm.numtide.com:50051
ubuntu-26.04-server-cloudimg-arm64.img> elastic-arm-79e33f10: building hzhfhg7mm8rdpn85zm5pzxzg15906xh4-ubuntu-26.04-server-cloudimg-arm64.img.drv
ubuntu-26.04-server-cloudimg-arm64.img> structuredAttrs is enabled
ubuntu-26.04-server-cloudimg-arm64.img> 
ubuntu-26.04-server-cloudimg-arm64.img> trying https://cloud-images.ubuntu.com/releases/resolute/release-20260918/ubuntu-26.04-server-cloudimg-arm64.img
ubuntu-26.04-server-cloudimg-arm64.img>   % Total    % Received % Xferd  Average Speed  Time    Time    Time   Current
ubuntu-26.04-server-cloudimg-arm64.img>                                  Dload  Upload  Total   Spent   Left   Speed
ubuntu-26.04-server-cloudimg-arm64.img> 100 901.0M 100 901.0M   0      0 352.1M      0   00:02   00:02         316.9M

upload niks3: ok