librustc: Put #[unsafe_destructor] behind a feature gate.
#14988
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r=me if you add this text next to to the allow directives: #![allow(unknown_features)] // NOTE: remove after a stage0 snap |
Closes rust-lang#8142. This is not the semantics we want long-term. You can continue to use `#[unsafe_destructor]`, but you'll need to add `#![feature(unsafe_destructor)]` to the crate attributes. [breaking-change]
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…r=alexcrichton Closes #8142. This is not the semantics we want long-term. You can continue to use `#[unsafe_destructor]`, but you'll need to add `#![feature(unsafe_destructor)]` to the crate attributes. [breaking-change] r? @alexcrichton
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internal: Sync from rust
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Closes #8142.
This is not the semantics we want long-term. You can continue to use
#[unsafe_destructor], but you'll need to add#![feature(unsafe_destructor)]to the crate attributes.[breaking-change]
r? @alexcrichton