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diff --git a/src/docs/as_underscore.txt b/src/docs/as_underscore.txt
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--- a/src/docs/as_underscore.txt
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-### What it does
-Check for the usage of `as _` conversion using inferred type.
-
-### Why is this bad?
-The conversion might include lossy conversion and dangerous cast that might go
-undetected due to the type being inferred.
-
-The lint is allowed by default as using `_` is less wordy than always specifying the type.
-
-### Example
-```
-fn foo(n: usize) {}
-let n: u16 = 256;
-foo(n as _);
-```
-Use instead:
-```
-fn foo(n: usize) {}
-let n: u16 = 256;
-foo(n as usize);
-```
\ No newline at end of file