these 3 derivations will be built:
  /nix/store/5miiw5b0cj12ks2h9xmlwz7hgv3mgw71-treefmt.toml.drv
  /nix/store/np734gs6kkkr40jpmziyr794b1wcnym8-treefmt.drv
  /nix/store/jnwplsp2nqpafh3c7ap83qv7mzddn3q4-treefmt-check.drv
building '/nix/store/5miiw5b0cj12ks2h9xmlwz7hgv3mgw71-treefmt.toml.drv'
treefmt.toml> structuredAttrs is enabled
building '/nix/store/np734gs6kkkr40jpmziyr794b1wcnym8-treefmt.drv'
building '/nix/store/jnwplsp2nqpafh3c7ap83qv7mzddn3q4-treefmt-check.drv'
treefmt-check> treefmt v2.6.0traversed 23 files
treefmt-check> emitted 20 files for processing
treefmt-check> formatted 20 files (0 changed) in 84ms

post-build step Route build to niks3: ok
Pushing mulatta/dagster-nix to https://niks3.mulatta.io
time=2026-09-12T05:39:48.134+09:00 level=INFO msg="Uploading 0 paths to niks3.mulatta.io (1 already cached)"
time=2026-09-12T05:39:48.676+09:00 level=INFO msg="Uploading 1 narinfos"
time=2026-09-12T05:39:49.122+09:00 level=INFO msg="Upload complete. (1.067s)"