X-Git-Url: https://git.lizzy.rs/?a=blobdiff_plain;f=src%2Flibcore%2Fiter%2Fsources.rs;h=59220b320918b22f285580d012ea27f51e1f3b31;hb=84718c1999482f703ab7fc58a70ffc86269efac8;hp=103d02da22f0e6f3ddc83c9c588fe82e2f7b9197;hpb=7c083a8fede186f2fc39a1d0e30ee156417473b0;p=rust.git

diff --git a/src/libcore/iter/sources.rs b/src/libcore/iter/sources.rs
index 103d02da22f..59220b32091 100644
--- a/src/libcore/iter/sources.rs
+++ b/src/libcore/iter/sources.rs
@@ -443,6 +443,8 @@ unsafe impl<A, F: FnOnce() -> A> TrustedLen for OnceWith<F> {}
 /// Basic usage:
 ///
 /// ```
+/// #![feature(iter_once_with)]
+///
 /// use std::iter;
 ///
 /// // one is the loneliest number