1 files changed, 2 insertions, 0 deletions
diff --git a/src/libstd/ffi/c_str.rs b/src/libstd/ffi/c_str.rs
index 8164f52d3c3..7c358aafa9b 100644
--- a/src/libstd/ffi/c_str.rs
+++ b/src/libstd/ffi/c_str.rs
@@ -988,6 +988,7 @@ impl CStr {
     /// behavior when `ptr` is used inside the `unsafe` block:
     ///
     /// ```no_run
+    /// # #![allow(unused_must_use)]
     /// use std::ffi::{CString};
     ///
     /// let ptr = CString::new("Hello").unwrap().as_ptr();
@@ -1003,6 +1004,7 @@ impl CStr {
     /// To fix the problem, bind the `CString` to a local variable:
     ///
     /// ```no_run
+    /// # #![allow(unused_must_use)]
     /// use std::ffi::{CString};
     ///
     /// let hello = CString::new("Hello").unwrap();