GitHub's /issues/:n/events endpoint returns a mixed-schema table.
Only labeled/unlabeled rows carry a `label` column. Nu's `where`
does not short-circuit on missing columns, so the combined
predicate `event == "labeled" and label.name == ...` dereferenced
`label.name` on every row and crashed on the first non-labeled
event with `nu:🐚:column_not_found`.
The scheduled job has failed every night since 2026-04-13 (the
first run with a labeled issue), so no `needs-more-info` issue
has been auto-closed.
Split into two sequential `where` filters so `label.name` is only
accessed on rows that have the column.