this derivation will be built:
  /nix/store/srqrc4jz8ajidszpiblzr5gyrchbmzxi-claude-code-2.1.260.drv

post-build step Upload to niks3: ok
time=2026-09-04T19:10:14.983Z level=INFO msg="Uploading 1 paths to ::1 (20 already cached)"
time=2026-09-04T19:10:14.983Z level=INFO msg="Uploading x7h8g0zsg6cz1axckqg40yfwj7vgnckw-claude-code-2.1.260 (204.8MB)"
time=2026-09-04T19:10:41.009Z level=ERROR msg="Failed to close zstd encoder" error="io: read/write on closed pipe"
time=2026-09-04T19:10:41.009Z level=INFO msg="Uploading 1 narinfos"
time=2026-09-04T19:10:42.251Z level=INFO msg="Upload complete. (27.746s)"