Fix smoke tests

[camposandro]

The merge of recent PRs unwillingly removed a warnings import.

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 97.20%. Comparing base (5a1a431) to head (1e78f2c).
⚠️ Report is 22 commits behind head on main.

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #1069      +/-   ##
==========================================
+ Coverage   97.16%   97.20%   +0.03%     
==========================================
  Files          46       46              
  Lines        2679     2717      +38     
==========================================
+ Hits         2603     2641      +38     
  Misses         76       76              

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[github-actions]

Before [a1ae07a]	After [67674c1]	Ratio	Benchmark (Parameter)
failed	91.6±2ms	n/a	benchmarks.time_kdtree_crossmatch
failed	failed	n/a	benchmarks.time_lazy_crossmatch_many_columns_all_suffixes
failed	failed	n/a	benchmarks.time_lazy_crossmatch_many_columns_overlapping_suffixes
failed	failed	n/a	benchmarks.time_open_many_columns_all
24.3±0.1ms	24.9±0.1ms	1.02	benchmarks.time_box_filter_on_partition
868±20ms	873±5ms	1.01	benchmarks.time_create_midsize_catalog
578±10ms	583±10ms	1.01	benchmarks.time_open_many_columns_list
5.77±0.03s	5.76±0.02s	1.00	benchmarks.time_create_large_catalog
41.1±1ms	39.8±0.4ms	0.97	benchmarks.time_polygon_search
1.70±0.02s	1.62±0s	0.96	benchmarks.time_open_many_columns_default

Some benchmarks failed or their performance regressed significantly.