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-rw-r--r--compiler/rustc_parse/src/parser/attr_wrapper.rs1
1 files changed, 0 insertions, 1 deletions
diff --git a/compiler/rustc_parse/src/parser/attr_wrapper.rs b/compiler/rustc_parse/src/parser/attr_wrapper.rs
index 2e421a7f193..38f18022e3c 100644
--- a/compiler/rustc_parse/src/parser/attr_wrapper.rs
+++ b/compiler/rustc_parse/src/parser/attr_wrapper.rs
@@ -87,7 +87,6 @@ fn has_cfg_or_cfg_attr(attrs: &[Attribute]) -> bool {
 //
 // This also makes `Parser` very cheap to clone, since
 // there is no intermediate collection buffer to clone.
-#[derive(Clone)]
 struct LazyAttrTokenStreamImpl {
     start_token: (Token, Spacing),
     cursor_snapshot: TokenCursor,