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Add #![feature(staged_api)] attribute to E0539 error examples

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unexge 2020-05-02 23:10:34 +03:00
parent e4ee172ab0
commit 9536567210
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4
src/librustc_error_codes/error_codes/E0539.md
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@ -3,6 +3,8 @@ An invalid meta-item was used inside an attribute.
Erroneous code example:
```compile_fail,E0539
#![feature(staged_api)]
#[rustc_deprecated(reason)] // error!
#[unstable(feature = "deprecated_fn", issue = "123")]
fn deprecated() {}
@ -24,6 +26,8 @@ Meta items are the key-value pairs inside of an attribute.
To fix these issues you need to give required key-value pairs.
```
#![feature(staged_api)]
#[rustc_deprecated(since = "1.39.0", reason = "reason")] // ok!
#[unstable(feature = "deprecated_fn", issue = "123")]
fn deprecated() {}