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warning: unknown lint: `rustc::foo::bar::default_hash_types`
--> $DIR/issue-83477.rs:5:9
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LL | #[allow(rustc::foo::bar::default_hash_types)]
| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: did you mean: `rustc::default_hash_types`
|
= note: `#[warn(unknown_lints)]` on by default
warning: unknown lint: `rustc::foo::default_hash_types`
--> $DIR/issue-83477.rs:9:9
|
LL | #[allow(rustc::foo::default_hash_types)]
| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: did you mean: `rustc::default_hash_types`
warning: prefer `FxHashMap` over `HashMap`, it has better performance
--> $DIR/issue-83477.rs:14:13
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LL | let _ = std::collections::HashMap::<String, String>::new();
| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
|
note: the lint level is defined here
--> $DIR/issue-83477.rs:3:9
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LL | #![warn(rustc::internal)]
| ^^^^^^^^^^^^^^^
= note: `#[warn(rustc::default_hash_types)]` implied by `#[warn(rustc::internal)]`
= note: a `use rustc_data_structures::fx::FxHashMap` may be necessary
warning: 3 warnings emitted
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