this derivation will be built:
  /nix/store/7a19dxafvb8f9dljlgg33s1iv9n5is27-nix-shell.drv
building '/nix/store/7a19dxafvb8f9dljlgg33s1iv9n5is27-nix-shell.drv'
nix-shell> Running phase: buildPhase

post-build step Upload to niks3: ok
time=2026-08-13T15:22:14.234Z level=INFO msg="Uploading 1 paths to niks3.clan.lol (216 already cached)"
time=2026-08-13T15:22:14.235Z level=INFO msg="Uploading i1ddl4m7byjb3z3f4f6045fmwpiy5i73-nix-shell (6.7KB)"
time=2026-08-13T15:22:14.576Z 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/log/7a19dxafvb8f9dljlgg33s1iv9n5is27-nix-shell.drv?X-Amz-Algorithm=AWS4-HMAC-SHA256&X-Amz-Credential=003eaae730241090000000009%2F20260813%2Feu-central-003%2Fs3%2Faws4_request&X-Amz-Date=20260813T152214Z&X-Amz-Expires=18000&X-Amz-SignedHeaders=host&X-Amz-Signature=43ead7e40fd57a96e98cf2357abf1af151b889dcca1e066a84a244dbc0b0888a"
time=2026-08-13T15:22:20.489Z level=INFO msg="Uploading 2 narinfos"
time=2026-08-13T15:22:21.203Z level=INFO msg="Upload complete. (7.15s)"