build_dividends joined the whole facts scan against a mapping of a few dozen tags. The join selects the right rows but Polars cannot push one into a parquet reader, so all 3.3 GB of facts and facts_dimensional were read into memory to be discarded immediately after -- the job was OOM-killed there on 16 GB. Stating the tags as a predicate first reaches the reader. Both scans now collect through the streaming engine as well.
The job header asked for ruff>=0.11,<1, which is whatever ruff released this morning. A new minor added RUF100, four previously clean noqa directives became errors, and fund-holdings-nport published nothing for seventeen days; the same morning could have stopped all fifteen datasets at once. The version is now chosen deliberately, and upgrading it is a commit where somebody also fixes whatever it finds.
