this derivation will be built:
  /nix/store/2m8bsx8qg1fs4n5fv806a8qxz2vlykx1-check-unpinCargoMsrvHook.drv
building '/nix/store/2m8bsx8qg1fs4n5fv806a8qxz2vlykx1-check-unpinCargoMsrvHook.drv'

upload niks3: ok