ConsTuples is a MapSpecialCase

[phimuemue]

No description provided.

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 94.25%. Comparing base (6814180) to head (6433dd7).
Report is 115 commits behind head on master.

Additional details and impacted files

@@            Coverage Diff             @@
##           master     #988      +/-   ##
==========================================
- Coverage   94.38%   94.25%   -0.14%     
==========================================
  Files          48       49       +1     
  Lines        6665     6702      +37     
==========================================
+ Hits         6291     6317      +26     
- Misses        374      385      +11     

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[phimuemue]

I'm unsure about the failing CI: Is the problem that ConsTuples required 2 generic arguments, whereas now it only needs 1? If so, I'd be tempted to accept this.

[jswrenn]

We already have a breaking change queued up anyways for our MSRV bump, so the breaking change in this PR is a non-issue.