this derivation will be built:
  /nix/store/3fnsrfh1si1rjk26n89i3v2y1y1d3q54-run-sigma-vm-on-aarch64-linux.drv
building '/nix/store/3fnsrfh1si1rjk26n89i3v2y1y1d3q54-run-sigma-vm-on-aarch64-linux.drv' on 'ssh-ng://builder@build01.clan.lol'
building '/nix/store/3fnsrfh1si1rjk26n89i3v2y1y1d3q54-run-sigma-vm-on-aarch64-linux.drv'
run-sigma-vm-on-aarch64-linux> structuredAttrs is enabled

upload niks3: ok