this derivation will be built:
  /nix/store/47pmymcp06zc0s23nd83lxn6kq8z3kzz-check-unpinCargoMsrvHook.drv
building '/nix/store/47pmymcp06zc0s23nd83lxn6kq8z3kzz-check-unpinCargoMsrvHook.drv'

upload niks3: ok