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Rollup merge of #54891 - rust-lang:SimonSapin-patch-1, r=nagisa

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Fix tracking issue for Once::is_completed

https://github.com/rust-lang/rust/pull/53027 was merged without a tracking issue. I just filed https://github.com/rust-lang/rust/issues/54890. CC @matklad
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kennytm 2018-10-12 22:04:07 +08:00 • committed by GitHub
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src/libstd/sync/once.rs
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@ -329,7 +329,7 @@ impl Once {
/// assert!(handle.join().is_err());
/// assert_eq!(INIT.is_completed(), false);
/// ```
#[unstable(feature = "once_is_completed", issue = "42")]
#[unstable(feature = "once_is_completed", issue = "54890")]
#[inline]
pub fn is_completed(&self) -> bool {
// An `Acquire` load is enough because that makes all the initialization