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Auto merge of #7549 - ehuss:minimal-versions-note, r=alexcrichton

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Add a note to discourage the use of -Zminimal-versions.

We've discussed this a few times, that the current implementation isn't working out, so let's be more transparent about it.
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bors 2019-10-28 17:20:43 +00:00
commit 9a935d5f96
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6
src/doc/src/reference/unstable.md
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@ -44,6 +44,12 @@ generated if dev-dependencies are skipped.
* Original Issue: [#4100](https://github.com/rust-lang/cargo/issues/4100)
* Tracking Issue: [#5657](https://github.com/rust-lang/cargo/issues/5657)
> Note: It is not recommended to use this feature. Because it enforces minimal
> versions for all transitive dependencies, its usefulness is limited since
> not all external dependencies declare proper lower version bounds. It is
> intended that it will be changed in the future to only enforce minimal
> versions for direct dependencies.
When a `Cargo.lock` file is generated, the `-Z minimal-versions` flag will
resolve the dependencies to the minimum semver version that will satisfy the
requirements (instead of the greatest version).