this derivation will be built:
  /nix/store/ca706z4m2k2ici8fmndmpjfc4mkg1sr1-treefmt-check.drv
[fddb:4344:343b:14b9:399:9324:19d9:3451]:50051: failed to connect to all addresses; last error: UNKNOWN: ipv6:%5Bfddb:4344:343b:14b9:399:9324:19d9:3451%5D:50051: tcp handshaker shutdown, retrying
[fddb:4344:343b:14b9:399:9324:19d9:3451]:50051: failed to connect to all addresses; last error: UNKNOWN: ipv6:%5Bfddb:4344:343b:14b9:399:9324:19d9:3451%5D:50051: tcp handshaker shutdown, retrying
building '/nix/store/ca706z4m2k2ici8fmndmpjfc4mkg1sr1-treefmt-check.drv' on 'grpc://[fddb:4344:343b:14b9:399:9324:19d9:3451]:50051?ca-cert=/run/nix-grpc-store/ca.crt&connect-timeout=5'
building '/nix/store/ca706z4m2k2ici8fmndmpjfc4mkg1sr1-treefmt-check.drv' on [fddb:4344:343b:14b9:399:9324:19d9:3451]:50051
treefmt-check> stibnite: building ca706z4m2k2ici8fmndmpjfc4mkg1sr1-treefmt-check.drv
treefmt-check> treefmt v2.6.0traversed 2083 files
treefmt-check> emitted 556 files for processing
treefmt-check> formatted 556 files (0 changed) in 3.747s

upload niks3: ok