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a61126cef6
fixes #117448 For example unnecessary imports in std::prelude that can be eliminated: ```rust use std::option::Option::Some;//~ WARNING the item `Some` is imported redundantly use std::option::Option::None; //~ WARNING the item `None` is imported redundantly ```
38 lines
874 B
Plaintext
38 lines
874 B
Plaintext
warning: unused extern crate
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--> $DIR/remove-extern-crate.rs:11:1
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LL | extern crate core;
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| ^^^^^^^^^^^^^^^^^^ help: remove it
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note: the lint level is defined here
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--> $DIR/remove-extern-crate.rs:7:9
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LL | #![warn(rust_2018_idioms)]
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| ^^^^^^^^^^^^^^^^
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= note: `#[warn(unused_extern_crates)]` implied by `#[warn(rust_2018_idioms)]`
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warning: `extern crate` is not idiomatic in the new edition
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--> $DIR/remove-extern-crate.rs:35:5
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LL | extern crate core;
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| ^^^^^^^^^^^^^^^^^^
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help: convert it to a `use`
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LL | use core;
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| ~~~
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warning: `extern crate` is not idiomatic in the new edition
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--> $DIR/remove-extern-crate.rs:45:5
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LL | pub extern crate core;
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| ^^^^^^^^^^^^^^^^^^^^^^
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help: convert it to a `use`
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LL | pub use core;
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| ~~~
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warning: 3 warnings emitted
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