Fixed the targets of analysis manifest entries.

[Arnavion]

Before this change, all entries would use the last visited target from the
previous loop, thus would not match their parent target section.

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Ref #150 (comment)

[rust-highfive]

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

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[brson]

Thanks! cc @nrc