trpl-zh-cn/listings/ch15-smart-pointers/output-only-01-comparing-to-reference/output.txt

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$ cargo run
Compiling deref-example v0.1.0 (file:///projects/deref-example)
error[E0277]: can't compare `{integer}` with `&{integer}`
--> src/main.rs:6:5
|
6 | assert_eq!(5, y);
| ^^^^^^^^^^^^^^^^ no implementation for `{integer} == &{integer}`
|
= help: the trait `PartialEq<&{integer}>` is not implemented for `{integer}`
= note: this error originates in the macro `assert_eq` (in Nightly builds, run with -Z macro-backtrace for more info)
For more information about this error, try `rustc --explain E0277`.
error: could not compile `deref-example` (bin "deref-example") due to 1 previous error