Traceback (most recent call last):
  File "/app/main.py", line 42, in <module>
    main()
  File "/app/main.py", line 38, in main
    run_pipeline(config)
  File "/app/pipeline.py", line 90, in run_pipeline
    stage.execute(ctx)
  File "/app/pipeline.py", line 61, in execute
    return self._dispatch(ctx)
  File "/app/pipeline.py", line 47, in _dispatch
    return handler(ctx)
  File "/app/handlers/ingest.py", line 118, in handle
    rows = load_rows(ctx.source)
  File "/app/handlers/ingest.py", line 77, in load_rows
    return [parse_row(r) for r in reader]
  File "/app/handlers/ingest.py", line 77, in <listcomp>
    return [parse_row(r) for r in reader]
  File "/app/handlers/ingest.py", line 54, in parse_row
    return Row(**coerce(raw))
  File "/app/models/row.py", line 31, in __init__
    self.count = to_int(count)
  File "/app/models/row.py", line 19, in to_int
    return _coerce_scalar(value, int)
  File "/app/coerce.py", line 140, in _coerce_scalar
    return _apply(kind, value)
  File "/app/coerce.py", line 112, in _apply
    return _narrow(kind, value)
  File "/app/coerce.py", line 88, in _narrow
    return kind(value)
  File "/app/coerce.py", line 63, in __call__
    return self.inner(value)
  File "/app/coerce.py", line 40, in inner
    return int(value)
ValueError: invalid literal for int() with base 10: 'abc'
