Configuring Unexpected cfgs

[jmwample]

A recent version of rust (I am not sure exactly which) added a check to ensure that all features used in the crate are defined in the Cargo.toml. This caused an error / warning for me because I am using a feature not named in the Cargo.toml called "disabled" to remove certain unfinished, long-running, or inaccurate tests (that I don't want to fully remove) from the compiled test harness.

Previously I was doing this by broadly disabling the unexpected_cfg check entirely for the crate using:

#![allow(unexpected_cfgs)]

With updates included in nightly there is a better solution to this. Which is to inform the compiler of any used, but undeclared features so that any that would be unexpected must be intentional. And the check can catch unintentional unused cfgs for you.

[lints.rust]
unexpected_cfgs = { level = "allow", check-cfg = ['cfg(target_features, values("disabled"))'] }

thanks to @Urgau for pointing this out in #38

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 78.45%. Comparing base (62bb296) to head (b8a7b31).

Additional details and impacted files

@@            Coverage Diff             @@
##             main      #58      +/-   ##
==========================================
- Coverage   78.48%   78.45%   -0.04%     
==========================================
  Files          35       35              
  Lines        5681     5687       +6     
  Branches     5681     5687       +6     
==========================================
+ Hits         4459     4462       +3     
- Misses        831      834       +3     
  Partials      391      391              

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