these 21 derivations will be built:
  /nix/store/2r5lsk7zzzwmwdll9f44ljlbw7lzawky-boot.json.drv
  /nix/store/wc8vmh15s6nmglqgghgk4ki0ymdk0r10-system-path.drv
  /nix/store/9drabkh4qr5ki9dyvxbgmbzfnzc3sk4p-dbus-1.drv
  /nix/store/bdqbmipagpiq9555j1azd1420424ah4m-X-Restart-Triggers-dbus-broker.drv
  /nix/store/wn0338x4b85ybjq8gyhzm8p5xrncry10-unit-dbus-broker.service.drv
  /nix/store/az2a7237gkkdgyj8izzlhviwqpx3wjx5-user-units.drv
  /nix/store/bf89zcvb8jikaijbs2fsz06mbgacn913-issue.drv
  /nix/store/gjabrg4yvrdps87s4q1i70v6cnzpqvpg-etc-os-release.drv
  /nix/store/5k9171l43sqrfz67m1fsv66zjhzxkaa8-nixos-26.11.20260825.ac6b216.drv
  /nix/store/lpisnjkkkbnci93j86k9fa9x7x65bf71-etc-nix-registry.json.drv
  /nix/store/91m2k5dmwc8d9ziba5w7ir8kxfjws1h3-unit-dbus-broker.service.drv
  /nix/store/g1faif36567935k5nwvv6c3bggaqppal-shutdown-ramfs-contents.json.drv
  /nix/store/jhry5585lnfy5830lxf5769gkhizsafh-unit-generate-shutdown-ramfs.service.drv
  /nix/store/gnl98b748r42sbwlb70issy36w4czwga-X-Restart-Triggers-polkit.drv
  /nix/store/vrfnl5d6036bc2n1hf4vnl1v8lrdggcn-unit-polkit.service.drv
  /nix/store/hrk14d6lwr77y0ncaa34qjbwah6sp9qr-unit-script-nix-channel-init-start.drv
  /nix/store/xdl492p2x9nsbxxwaj95bjhz6gs1yxy2-unit-nix-channel-init.service.drv
  /nix/store/z16xljw5zszcqvvad7ck1kkwvpbb7rrh-system-units.drv
  /nix/store/467jhzy8hj5wsdr3vzsm70800fwginr8-etc.drv
  /nix/store/fik3cvf6yvaacv1xpscyhgncvghyz4i3-activate.drv
  /nix/store/agbarv4vsx8894zayiym3hx952kgz2ly-nixos-system-flash-installer-26.11.20260825.ac6b216.drv
building '/nix/store/gjabrg4yvrdps87s4q1i70v6cnzpqvpg-etc-os-release.drv'
building '/nix/store/bf89zcvb8jikaijbs2fsz06mbgacn913-issue.drv'
building '/nix/store/g1faif36567935k5nwvv6c3bggaqppal-shutdown-ramfs-contents.json.drv'
building '/nix/store/jhry5585lnfy5830lxf5769gkhizsafh-unit-generate-shutdown-ramfs.service.drv'
unit-generate-shutdown-ramfs.service> structuredAttrs is enabled

post-build step Upload to niks3: ok
time=2026-08-25T20:08:05.502Z level=INFO msg="Uploading 1 paths to niks3.clan.lol (778 already cached)"
time=2026-08-25T20:08:05.503Z level=INFO msg="Uploading v55f9ca8kc11vyqnc66wmd3c5x0nz6xx-nixos-26.11.20260825.ac6b216 (202.9MB)"
time=2026-08-25T20:08:09.229Z level=ERROR msg="Failed to close zstd encoder" error="io: read/write on closed pipe"
time=2026-08-25T20:08:09.232Z level=INFO msg="Uploading 23 narinfos"
time=2026-08-25T20:08:15.343Z level=WARN msg="Request returned retryable status, retrying" attempt=1 max_attempts=6 backoff=100ms status=500 url="https://s3.eu-central-003.backblazeb2.com/clan-cache-geninf/7yqa8dh96wy8rkxfn98vfc83bfxnzryc.narinfo?X-Amz-Algorithm=AWS4-HMAC-SHA256&X-Amz-Credential=003eaae730241090000000009%2F20260825%2Feu-central-003%2Fs3%2Faws4_request&X-Amz-Date=20260825T200805Z&X-Amz-Expires=18000&X-Amz-SignedHeaders=host&X-Amz-Signature=53441720bff712673aca0c7e8a7c67a4df09b7594f90143dffb1992a2e975baf"
time=2026-08-25T20:08:15.576Z level=INFO msg="Upload complete. (10.432s)"