these 3 derivations will be built:
  /nix/store/7133nf9bbwy81z0zs85cyydqj5x2wfmg-rendered.drv
  /nix/store/c0j03bc6q188ji25vr6kmifl2043jimn-generated-docs.drv
  /nix/store/dxw2pjljryvgi6pv9fbnn24jrxc5ahns-nix-shell.drv
building '/nix/store/dxw2pjljryvgi6pv9fbnn24jrxc5ahns-nix-shell.drv' on 'ssh-ng://builder@build01.clan.lol'
building '/nix/store/dxw2pjljryvgi6pv9fbnn24jrxc5ahns-nix-shell.drv'
nix-shell> Running phase: buildPhase

post-build step Upload to niks3: failed
time=2026-09-19T00:26:48.784Z level=WARN msg="Request returned retryable status, retrying" attempt=1 max_attempts=6 backoff=100ms status=502 url=https://niks3.clan.lol/api/pending_closures
time=2026-09-19T00:28:35.805Z level=WARN msg="Request returned retryable status, retrying" attempt=2 max_attempts=6 backoff=206.640702ms status=502 url=https://niks3.clan.lol/api/pending_closures
time=2026-09-19T00:30:25.714Z level=WARN msg="Request returned retryable status, retrying" attempt=3 max_attempts=6 backoff=368.839399ms status=502 url=https://niks3.clan.lol/api/pending_closures
time=2026-09-19T00:32:14.807Z level=WARN msg="Request returned retryable status, retrying" attempt=4 max_attempts=6 backoff=736.966271ms status=502 url=https://niks3.clan.lol/api/pending_closures
time=2026-09-19T00:33:53.526Z level=WARN msg="Request returned retryable status, retrying" attempt=5 max_attempts=6 backoff=1.757905948s status=502 url=https://niks3.clan.lol/api/pending_closures
time=2026-09-19T00:35:03.858Z level=ERROR msg="Fatal error" error="pushing paths: creating pending closures: creating pending closure: server returned 502: "