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-rw-r--r--src/libstd_unicode/u_str.rs1
1 files changed, 1 insertions, 0 deletions
diff --git a/src/libstd_unicode/u_str.rs b/src/libstd_unicode/u_str.rs
index 0046e3f7bd0..5d1611acb7e 100644
--- a/src/libstd_unicode/u_str.rs
+++ b/src/libstd_unicode/u_str.rs
@@ -76,6 +76,7 @@ impl UnicodeStr for str {
 
 /// Iterator adaptor for encoding `char`s to UTF-16.
 #[derive(Clone)]
+#[allow(missing_debug_implementations)]
 pub struct Utf16Encoder<I> {
     chars: I,
     extra: u16,