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Showing content from https://doc.rust-lang.org/nightly/nightly-rustc/rustc_errors/json/struct.UnusedExterns.html below:

UnusedExterns in rustc_errors::json - Rust

Struct UnusedExternsSource

struct UnusedExterns<'a> {
    lint_level: &'a str,
    unused_extern_names: &'a [&'a str],
}

FieldsÂ§Â§lint_level: &'a str

The severity level of the unused dependencies lint

Â§unused_extern_names: &'a [&'a str]

List of unused externs by their names.

Trait ImplementationsÂ§ Auto Trait ImplementationsÂ§ Blanket ImplementationsÂ§ Source Â§ impl<T> Aligned for T Source Â§ impl<T> Any for T

where T: 'static + ?

Sized

Source Â§ impl<T> Borrow<T> for T Source Â§ impl<T> BorrowMut<T> for T Source Â§ impl<T, R> CollectAndApply<T, R> for T Source Â§ impl<T> Filterable for T Source Â§ impl<T> From<T> for T Source Â§ impl<T> Instrument for T Source Â§ impl<T, U> Into<U> for T Source Â§ fn into(self) -> U

Calls U::from(self).

That is, this conversion is whatever the implementation of From<T> for U chooses to do.

Source Â§ impl<T> IntoEither for T Source Â§ impl<T> Pointable for T Source Â§ impl<T> Same for T Source Â§ impl<T, U> TryFrom<U> for T Source Â§ impl<T, U> TryInto<U> for T Source Â§ impl<I, T, U> Upcast<I, U> for T Source Â§ impl<I, T> UpcastFrom<I, T> for T Source Â§ impl<V, T> VZip<V> for T Source Â§ impl<T> WithSubscriber for T Source Â§ impl<T> ErasedDestructor for T

where T: 'static,

Source Â§ impl<T> MaybeSendSync for T LayoutÂ§

Note: Most layout information is completely unstable and may even differ between compilations. The only exception is types with certain repr(...) attributes. Please see the Rust Reference's âType Layoutâ chapter for details on type layout guarantees.

Size: 32 bytes

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