these 4 derivations will be built:
  /nix/store/w3k74ypfj5p9nkwgzjfqgac0vdw58g3a-system-units.drv
  /nix/store/zqvfnl39prpwcm0sqnrzjxhxfjsrkd50-etc.drv
  /nix/store/1hypddrxqn025va0g1nyzqdcd9p9jgaw-activate.drv
  /nix/store/9zx5anl7zipb2c31qr78py0g2n20dw4l-nixos-system-test-documentation-26.11.20260818.f165e44.drv

post-build step Upload to niks3: ok
time=2026-08-18T20:03:54.097Z level=INFO msg="Uploading 1 paths to niks3.clan.lol (558 already cached)"
time=2026-08-18T20:03:54.097Z level=INFO msg="Uploading 7x3rlfb1rxqqimyiaqar4rg1jbpw3ymw-source (202.6MB)"
time=2026-08-18T20:04:22.261Z level=ERROR msg="Failed to close zstd encoder" error="io: read/write on closed pipe"
time=2026-08-18T20:04:22.264Z level=INFO msg="Uploading 13 narinfos"
time=2026-08-18T20:04:28.654Z level=INFO msg="Upload complete. (35.035s)"