Stop printing "error: too many arguments" during tests.

[mstange]

Fixes #6079.

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 83.69%. Comparing base (2cb282f) to head (283d1b6).
⚠️ Report is 1 commits behind head on main.

Additional details and impacted files

@@           Coverage Diff           @@
##             main    #6088   +/-   ##
=======================================
  Coverage   83.69%   83.69%           
=======================================
  Files         338      338           
  Lines       35693    35693           
  Branches     9904     9904           
=======================================
  Hits        29873    29873           
  Misses       5392     5392           
  Partials      428      428           

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