this derivation will be built:
  /nix/store/1cbp71j3plha1s9p6kb0v1s0d5fhlh4w-treefmt-check.drv
building '/nix/store/1cbp71j3plha1s9p6kb0v1s0d5fhlh4w-treefmt-check.drv'
treefmt-check> treefmt v2.5.0traversed 715 files
treefmt-check> emitted 678 files for processing
treefmt-check> formatted 678 files (0 changed) in 832ms

post-build step Route build to niks3: failed
Pushing mulatta/dots to https://niks3.mulatta.io
time=2026-09-04T21:17:32.188+09:00 level=WARN msg="Request failed, retrying" attempt=1 max_attempts=6 backoff=100ms error="Get \"https://niks3.mulatta.io/api/cache-config\": dial tcp 64.176.225.253:443: connect: connection refused" url=https://niks3.mulatta.io/api/cache-config
time=2026-09-04T21:17:32.293+09:00 level=WARN msg="Request failed, retrying" attempt=2 max_attempts=6 backoff=204.940634ms error="Get \"https://niks3.mulatta.io/api/cache-config\": dial tcp 64.176.225.253:443: connect: connection refused" url=https://niks3.mulatta.io/api/cache-config
time=2026-09-04T21:17:32.503+09:00 level=WARN msg="Request failed, retrying" attempt=3 max_attempts=6 backoff=434.352536ms error="Get \"https://niks3.mulatta.io/api/cache-config\": dial tcp 64.176.225.253:443: connect: connection refused" url=https://niks3.mulatta.io/api/cache-config
time=2026-09-04T21:17:32.941+09:00 level=WARN msg="Request failed, retrying" attempt=4 max_attempts=6 backoff=738.523395ms error="Get \"https://niks3.mulatta.io/api/cache-config\": dial tcp 64.176.225.253:443: connect: connection refused" url=https://niks3.mulatta.io/api/cache-config
time=2026-09-04T21:17:33.684+09:00 level=WARN msg="Request failed, retrying" attempt=5 max_attempts=6 backoff=1.691570337s error="Get \"https://niks3.mulatta.io/api/cache-config\": dial tcp 64.176.225.253:443: connect: connection refused" url=https://niks3.mulatta.io/api/cache-config
time=2026-09-04T21:17:35.382+09:00 level=WARN msg="Failed to fetch cache config, uploading without size limit" error="fetching cache config: sending request: request failed after retries: Get \"https://niks3.mulatta.io/api/cache-config\": dial tcp 64.176.225.253:443: connect: connection refused"
time=2026-09-04T21:17:35.386+09:00 level=WARN msg="Request failed, retrying" attempt=1 max_attempts=6 backoff=100ms 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=2026-09-04T21:17:35.491+09:00 level=WARN msg="Request failed, retrying" attempt=2 max_attempts=6 backoff=196.341485ms 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=2026-09-04T21:17:35.693+09:00 level=WARN msg="Request failed, retrying" attempt=3 max_attempts=6 backoff=385.347708ms 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=2026-09-04T21:17:36.083+09:00 level=WARN msg="Request failed, retrying" attempt=4 max_attempts=6 backoff=809.553481ms 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=2026-09-04T21:17:36.897+09:00 level=WARN msg="Request failed, retrying" attempt=5 max_attempts=6 backoff=1.624564054s 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=2026-09-04T21:17:38.528+09:00 level=ERROR msg="Fatal error" error="pushing paths: creating pending closures: creating pending closure: sending request: request failed after retries: Post \"https://niks3.mulatta.io/api/pending_closures\": dial tcp 64.176.225.253:443: connect: connection refused"