these 4 derivations will be built:
  /nix/store/8yb6j3ar91i3vpvgiq9igdd4cdxyacm8-system-units.drv
  /nix/store/nch74ill7z6rgi25n30l7rb118qdjksq-etc.drv
  /nix/store/r31s9x41yinp91l8jqd4rjb8nqy7m7vi-activate.drv
  /nix/store/4bj7fy5r28mmvkr2kskfvsbm92q8g63z-nixos-system-flash-installer-26.05.20260819.b18a4b9.drv

post-build step Upload to niks3: ok
time=2026-08-19T15:06:23.812Z level=INFO msg="Uploading 8 paths to niks3.clan.lol (795 already cached)"
time=2026-08-19T15:06:23.812Z level=INFO msg="Uploading sd507nzxh6yy3zjv3sknimbpkmaaj3sh-etc (43.0KB)"
time=2026-08-19T15:06:23.812Z level=INFO msg="Uploading phg9a00sfpsa3nxbya25shz1f0ymxr7y-unit-script-nix-channel-init-start (1.2KB)"
time=2026-08-19T15:06:23.812Z level=INFO msg="Uploading b7z207d5wnfiig1hpj4ds0kxf8jpsakl-shutdown-ramfs-contents.json (1.3KB)"
time=2026-08-19T15:06:23.812Z level=INFO msg="Uploading wsn7pisw1wyk9h6iyxza2xx53pm76yk4-unit-generate-shutdown-ramfs.service (1.8KB)"
time=2026-08-19T15:06:23.812Z level=INFO msg="Uploading fr4qi3s07dhch2357zazxxjr0ah013h7-unit-polkit.service (1.4KB)"
time=2026-08-19T15:06:23.812Z level=INFO msg="Uploading ccdws9wh2484lvvl3wdjan24wnv9ph10-user-units (11.8KB)"
time=2026-08-19T15:06:23.812Z level=INFO msg="Uploading d6p8hys1vzx640qn7gibb9r4w5zapisc-X-Restart-Triggers-dbus-broker (168B)"
time=2026-08-19T15:06:23.812Z level=INFO msg="Uploading 8bn2jbhmg8ji1h0k1q7q2m9njcl8s5rc-nixos-26.05.20260819.b18a4b9 (212.4MB)"
time=2026-08-19T15:06:53.974Z 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/10wri1akqrbmiay6mn247wla31s7kwicv8sqdin587j44996hwn7.nar.zst?X-Amz-Algorithm=AWS4-HMAC-SHA256&X-Amz-Credential=003eaae730241090000000009%2F20260819%2Feu-central-003%2Fs3%2Faws4_request&X-Amz-Date=20260819T150622Z&X-Amz-Expires=18000&X-Amz-SignedHeaders=host&partNumber=2&uploadId=4_zde3ada9ec793c07294f10019_f2485a22ce9b37bef_d20260819_m150622_c003_v0312045_t0038_u01787151982797&X-Amz-Signature=ddb1508488d7b2fd1e19a309adfbf6de2e88cf43931a2cc5b0f9b2741fd5026f"
time=2026-08-19T15:06:54.207Z level=ERROR msg="Failed to close zstd encoder" error="io: read/write on closed pipe"
time=2026-08-19T15:06:54.210Z level=INFO msg="Uploading 20 narinfos"
time=2026-08-19T15:06:55.835Z level=INFO msg="Upload complete. (33.423s)"