Suppress warning in test-io

[IndrajeetPatil]

Closes #1161

[codecov-commenter]

Codecov Report

All modified and coverable lines are covered by tests ✅

Comparison is base (10efce2) 92.16% compared to head (4447865) 92.16%.

❗ Current head 4447865 differs from pull request most recent head aac55d7. Consider uploading reports for the commit aac55d7 to get more accurate results

Additional details and impacted files

@@           Coverage Diff           @@
##             main    #1169   +/-   ##
=======================================
  Coverage   92.16%   92.16%           
=======================================
  Files          46       46           
  Lines        2655     2655           
=======================================
  Hits         2447     2447           
  Misses        208      208           

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[IndrajeetPatil]

@lorenzwalthert Can we deal with this flaky test? It is making it more likely that we miss out an actual failing test.

══ Failed tests ════════════════════════════════════════════════════════════════
── Failure ('tests-cache-require-serial.R:28:3'): top-level test: Caches top-level expressions efficiently on style_text() ──
full_cached_benchmark["elapsed"] * 30 is not strictly less than benchmark["elapsed"]. Difference: 0.01

[lorenzwalthert]

Yeah let's lift the hurdle for failing, e.g. x20 instead of x 30?

[lorenzwalthert]

Sounds good, thanks for implementing. If you want, you can also add the fix for the offending unrelated test to this PR.