Static rustc_lint_defs::builtin::DEPRECATED_IN_FUTURE

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pub static DEPRECATED_IN_FUTURE: &Lint
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The deprecated_in_future lint is internal to rustc and should not be used by user code.

This lint is only enabled in the standard library. It works with the use of #[deprecated] with a since field of a version in the future. This allows something to be marked as deprecated in a future version, and then this lint will ensure that the item is no longer used in the standard library. See the stability documentation for more details.