this derivation will be built:
  /nix/store/zdgwc8czi9rn309iqz3myb74fbn2rhzm-run-sigma-vm-on-x86_64-linux.drv
building '/nix/store/zdgwc8czi9rn309iqz3myb74fbn2rhzm-run-sigma-vm-on-x86_64-linux.drv' on 'ssh-ng://builder@build-x86-01.clan.lol'
building '/nix/store/zdgwc8czi9rn309iqz3myb74fbn2rhzm-run-sigma-vm-on-x86_64-linux.drv'
run-sigma-vm-on-x86_64-linux> structuredAttrs is enabled

upload niks3: ok