Rollup merge of #23788 - steveklabnik:gh23748, r=alexcrichton
Fixes #23748
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@ -51,7 +51,8 @@ You can think of this first parameter as being the `x` in `x.foo()`. The three
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variants correspond to the three kinds of thing `x` could be: `self` if it's
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just a value on the stack, `&self` if it's a reference, and `&mut self` if it's
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a mutable reference. We should default to using `&self`, as it's the most
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common. Here's an example of all three variants:
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common, as Rustaceans prefer borrowing over taking ownership, and references
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over mutable references. Here's an example of all three variants:
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```rust
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struct Circle {
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