this derivation will be built:
  /nix/store/z2z9i07ibsbw476ciwisdbxly0gb7007-nix-shell.drv
this path will be fetched (0.0 KiB download, 3.9 MiB unpacked):
  /nix/store/zf323lh3r00jsh1kx8li1z4qm2y2rh5n-clan-cli
building '/nix/store/z2z9i07ibsbw476ciwisdbxly0gb7007-nix-shell.drv' on 'ssh-ng://builder@build04.clan.lol'
warning: SQLite database '/nix/var/nix/db/db.sqlite' is busy

upload niks3: failed
time=2026-09-09T01:46:21.849Z 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=2026-09-09T01:48:07.381Z level=WARN msg="Request returned retryable status, retrying" attempt=2 max_attempts=6 backoff=207.974579ms status=502 url=https://niks3.clan.lol/api/pending_closures
time=2026-09-09T01:49:58.329Z level=WARN msg="Request returned retryable status, retrying" attempt=3 max_attempts=6 backoff=386.543601ms status=502 url=https://niks3.clan.lol/api/pending_closures
time=2026-09-09T01:51:31.337Z level=WARN msg="Request returned retryable status, retrying" attempt=4 max_attempts=6 backoff=846.093756ms status=502 url=https://niks3.clan.lol/api/pending_closures
time=2026-09-09T01:53:06.437Z level=WARN msg="Request returned retryable status, retrying" attempt=5 max_attempts=6 backoff=1.507387946s status=502 url=https://niks3.clan.lol/api/pending_closures
time=2026-09-09T01:55:00.092Z level=ERROR msg="Fatal error" error="pushing paths: creating pending closures: creating pending closure: server returned 502: "