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Minimum Supported Rust Version (MSRV)

This crate is guaranteed to compile on all stable Rust versions going back to the version stated as MSRV in the README. It might compile with even older versions but that may change in any new patch release.

How the MSRV will be upgraded

For this library, we do not consider upgrading the MSRV a strictly breaking change as defined by SemVer.

We follow these rules when upgrading it:

  • We will not update the MSRV on any patch release: _._.Z.
  • We may upgrade the MSRV on any major or minor release: X.Y._.
  • We may upgrade the MSRV in any preliminary version release (e.g. an -alpha release) as these serve as preparation for the final release.
  • MSRV upgrades will be clearly stated in the changelog.

This applies both to 0._._ releases as well as >=1._._ releases.

For example:

For a given x.y.z release, we may upgrade the MSRV on x and y releases but not on z releases.

If your MSRV upgrade policy differs from this, you are advised to specify the dependency in your Cargo.toml accordingly.

See the Rust Embedded Working Group MSRV RFC for more background information and reasoning.