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facet-rs / facet / 19986940450 / 1
58%
main: 58%

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DEFAULT BRANCH: main
Ran 06 Dec 2025 10:06AM UTC
Files 194
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06 Dec 2025 10:05AM UTC coverage: 58.705% (+0.005%) from 58.7%
19986940450.1

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fasterthanlime
feat(facet-reflect): make Peek covariant over 'facet lifetime

This allows `Peek<'mem, 'static>` to be used where `Peek<'mem, 'a>` is
expected, which is useful when mixing static and borrowed values.

Covariance is safe here because:
1. It only allows shrinking lifetimes ('static -> 'a), not growing
2. Data valid for 'static is valid for any shorter lifetime
3. The 'mem lifetime and borrow checker prevent references from escaping

Note: Partial remains invariant because it writes data, requiring the
stricter lifetime bound.

Closes discussion #1128

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