Data frames have different column structure.
Wrong column type for field squares actual: object; expected: int64)
Compare with:
    diff /var/folders/w7/lhtph66x7h33t9pns0616qk00000gn/T/actual-df001.parquet /var/folders/w7/lhtph66x7h33t9pns0616qk00000gn/T/expected-df001.parquet
