this derivation will be built:
  /nix/store/i45rgiqk3hiyrvvhqbbq5njravd04szr-nix-shell.drv
this path will be fetched (92.3 KiB download, 436.6 KiB unpacked):
  /nix/store/5iaf8jhfy3p2snck3b321pjhgfk6n8z7-nix-update-1.16.0
building '/nix/store/i45rgiqk3hiyrvvhqbbq5njravd04szr-nix-shell.drv'
nix-shell> Running phase: buildPhase

upload niks3: ok