3 files changed, 0 insertions, 9 deletions
diff --git a/src/libstd/ffi/c_str.rs b/src/libstd/ffi/c_str.rs
index 5dd7bb1c0c1..db64d41011c 100644
--- a/src/libstd/ffi/c_str.rs
+++ b/src/libstd/ffi/c_str.rs
@@ -453,8 +453,6 @@ impl CString {
     /// # Examples
     ///
     /// ```
-    /// #![feature(as_c_str)]
-    ///
     /// use std::ffi::{CString, CStr};
     ///
     /// let c_string = CString::new(b"foo".to_vec()).unwrap();
@@ -474,8 +472,6 @@ impl CString {
     /// # Examples
     ///
     /// ```
-    /// #![feature(into_boxed_c_str)]
-    ///
     /// use std::ffi::{CString, CStr};
     ///
     /// let c_string = CString::new(b"foo".to_vec()).unwrap();
@@ -1001,8 +997,6 @@ impl CStr {
     /// # Examples
     ///
     /// ```
-    /// #![feature(into_boxed_c_str)]
-    ///
     /// use std::ffi::CString;
     ///
     /// let c_string = CString::new(b"foo".to_vec()).unwrap();
diff --git a/src/libstd/ffi/os_str.rs b/src/libstd/ffi/os_str.rs
index 6f147ea0eec..d62e3e905e3 100644
--- a/src/libstd/ffi/os_str.rs
+++ b/src/libstd/ffi/os_str.rs
@@ -252,8 +252,6 @@ impl OsString {
     /// # Examples
     ///
     /// ```
-    /// #![feature(into_boxed_os_str)]
-    ///
     /// use std::ffi::{OsString, OsStr};
     ///
     /// let s = OsString::from("hello");
diff --git a/src/libstd/lib.rs b/src/libstd/lib.rs
index 8fe0ecfcf53..82262f1551a 100644
--- a/src/libstd/lib.rs
+++ b/src/libstd/lib.rs
@@ -303,7 +303,6 @@
 #![feature(stmt_expr_attributes)]
 #![feature(str_char)]
 #![feature(str_internals)]
-#![feature(str_mut_extras)]
 #![feature(str_utf16)]
 #![feature(test, rustc_private)]
 #![feature(thread_local)]