this derivation will be built:
  /nix/store/ydqll9jqiqgzn2sj9w4n3mh97wjq2sh8-nix-shell.drv
building '/nix/store/ydqll9jqiqgzn2sj9w4n3mh97wjq2sh8-nix-shell.drv' on 'ssh-ng://builder@build01.clan.lol'
building '/nix/store/ydqll9jqiqgzn2sj9w4n3mh97wjq2sh8-nix-shell.drv'
nix-shell> Running phase: buildPhase

post-build step Upload to niks3: ok
time=2026-08-23T20:03:11.388Z level=INFO msg="Uploading 1 paths to niks3.clan.lol (223 already cached)"
time=2026-08-23T20:03:11.388Z level=INFO msg="Uploading n056sw2c2fy5bsccxn54cz0c604mj5zr-nix-shell (6.7KB)"
time=2026-08-23T20:03:11.484Z 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/nar/1fc22s1d9x9nfz94p2y870yxm1v8ysh79rg0cyr0l65jdr0dgcrj.nar.zst?X-Amz-Algorithm=AWS4-HMAC-SHA256&X-Amz-Credential=003eaae730241090000000009%2F20260823%2Feu-central-003%2Fs3%2Faws4_request&X-Amz-Date=20260823T200311Z&X-Amz-Expires=18000&X-Amz-SignedHeaders=host&X-Amz-Signature=29b370d956a7bc773fa467deae6f1b25d0c6f8f494f22ba4f937492535bbe9bd"
time=2026-08-23T20:03:13.582Z level=INFO msg="Uploading 1 narinfos"
time=2026-08-23T20:03:13.921Z level=INFO msg="Upload complete. (2.772s)"