Fix refined error spans.

[yrns]

I'm on Rust 1.79 and I can't find any reference to this in the release notes, but I think they refined the error spans for some errors.

[codecov-commenter]

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Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 44.62%. Comparing base (5bd3806) to head (f6208af).
Report is 58 commits behind head on dev.

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Additional details and impacted files

@@            Coverage Diff             @@
##              dev      #15      +/-   ##
==========================================
+ Coverage   41.95%   44.62%   +2.66%     
==========================================
  Files          23       23              
  Lines        6643     7120     +477     
==========================================
+ Hits         2787     3177     +390     
- Misses       3856     3943      +87     

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