these 3 derivations will be built:
  /nix/store/50fgfkp57ilbwk9f0iajkvf1flcbizch-etc.drv
  /nix/store/kd3pph809j9ch9fkhhj98xsr2yxvid70-activate.drv
  /nix/store/gkbk21l9k091pabc88nxxnpzna28i3fp-nixos-system-taps-26.11.20260727.fc72407.drv
building '/nix/store/50fgfkp57ilbwk9f0iajkvf1flcbizch-etc.drv'
building '/nix/store/kd3pph809j9ch9fkhhj98xsr2yxvid70-activate.drv'
building '/nix/store/gkbk21l9k091pabc88nxxnpzna28i3fp-nixos-system-taps-26.11.20260727.fc72407.drv'
nixos-system-taps-26.11.20260727.fc72407> structuredAttrs is enabled

post-build step Route build to niks3: ok
Pushing mulatta/dots to https://niks3.mulatta.io
time=2026-08-30T00:14:36.502+09:00 level=WARN msg="Request failed, retrying" attempt=1 max_attempts=6 backoff=100ms error="Post \"https://niks3.mulatta.io/api/pending_closures\": unexpected EOF" url=https://niks3.mulatta.io/api/pending_closures
time=2026-08-30T00:14:36.607+09:00 level=WARN msg="Request failed, retrying" attempt=2 max_attempts=6 backoff=202.704286ms error="Post \"https://niks3.mulatta.io/api/pending_closures\": dial tcp 64.176.225.253:443: connect: connection refused" url=https://niks3.mulatta.io/api/pending_closures
time=2026-08-30T00:14:36.814+09:00 level=WARN msg="Request failed, retrying" attempt=3 max_attempts=6 backoff=435.252347ms error="Post \"https://niks3.mulatta.io/api/pending_closures\": dial tcp 64.176.225.253:443: connect: connection refused" url=https://niks3.mulatta.io/api/pending_closures
time=2026-08-30T00:14:37.254+09:00 level=WARN msg="Request failed, retrying" attempt=4 max_attempts=6 backoff=879.551322ms error="Post \"https://niks3.mulatta.io/api/pending_closures\": dial tcp 64.176.225.253:443: connect: connection refused" url=https://niks3.mulatta.io/api/pending_closures
time=2026-08-30T00:14:39.207+09:00 level=INFO msg="Uploading 4 paths to niks3.mulatta.io (688 already cached)"
time=2026-08-30T00:14:41.089+09:00 level=INFO msg="Uploading 3c5drlxsady1m2dlwjqyxfczb43zdqhn-source (4.0MB)"
time=2026-08-30T00:14:41.114+09:00 level=INFO msg="Uploading 1nccafic102j9gzmcswncmncnpn583as-etc (45.3KB)"
time=2026-08-30T00:14:41.121+09:00 level=INFO msg="Uploading s1427rli69gslfmhv4snbhw1g10hnn84-nixos-system-taps-26.11.20260727.fc72407 (248.6KB)"
time=2026-08-30T00:14:41.131+09:00 level=INFO msg="Uploading c9qa6pqfycml7bas1b7qzm53nhyjl373-etc-nix-registry.json (416B)"
time=2026-08-30T00:14:43.735+09:00 level=INFO msg="Uploading 4 narinfos"
time=2026-08-30T00:14:44.695+09:00 level=INFO msg="Upload complete. (8.604s)"