Improve documentation for Box::into_inner

[ZhangHanDong]

cc #80437

Signed-off-by: blackanger <bl Improve documentation for Box::into_inner #98523 [email protected]>

Blocked on tracking issue comment

[rust-highfive]

Hey! It looks like you've submitted a new PR for the library teams!

If this PR contains changes to any rust-lang/rust public library APIs then please comment with @rustbot label +T-libs-api -T-libs to tag it appropriately. If this PR contains changes to any unstable APIs please edit the PR description to add a link to the relevant API Change Proposal or create one if you haven't already. If you're unsure where your change falls no worries, just leave it as is and the reviewer will take a look and make a decision to forward on if necessary.

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[rust-highfive]

Thanks for the pull request, and welcome! The Rust team is excited to review your changes, and you should hear from @Mark-Simulacrum (or someone else) soon.

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[crlf0710]

ci still red
r? @dtolnay
@rustbot author

[ZhangHanDong]

@rustbot ready

[dtolnay]

@rustbot blocked. #80437 (comment)

[dtolnay]

Closing in favor of ongoing discussion in #80437. It seems we don't really have a clear picture what this method is for, and the example here isn't compelling to me. If anyone in #80437 lands on a better example, I'd be happy about a PR for it, otherwise we'll hopefully be removing this method.

Thanks anyway for the contribution!