this derivation will be built:
  /nix/store/6vl0i08ym3wlyiphwm3hgg09fkaazvaf-unpin-cargo-msrv-hook.drv
building '/nix/store/6vl0i08ym3wlyiphwm3hgg09fkaazvaf-unpin-cargo-msrv-hook.drv' on 'ssh-ng://customer@mac02.m.ntd.one'
building '/nix/store/6vl0i08ym3wlyiphwm3hgg09fkaazvaf-unpin-cargo-msrv-hook.drv'
unpin-cargo-msrv-hook> structuredAttrs is enabled

post-build step Upload to niks3: ok
time=2026-08-27T22:23:20.061Z level=INFO msg="Uploading 0 paths to niks3.numtide.com (1 already cached)"
time=2026-08-27T22:23:20.445Z level=INFO msg="Uploading 1 narinfos"
time=2026-08-27T22:23:20.847Z level=INFO msg="Upload complete. (871ms)"