this derivation will be built:
  /nix/store/x80ha3m6h14v0yy9sb001i2fdabrwx7y-check-freebuff.drv
building '/nix/store/x80ha3m6h14v0yy9sb001i2fdabrwx7y-check-freebuff.drv' on 'ssh-ng://customer@mac02.m.ntd.one'
building '/nix/store/x80ha3m6h14v0yy9sb001i2fdabrwx7y-check-freebuff.drv'

upload niks3: ok