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diff --git a/src/tools/clippy/src/docs/clone_double_ref.txt b/src/tools/clippy/src/docs/clone_double_ref.txt
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+++ b/src/tools/clippy/src/docs/clone_double_ref.txt
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+### What it does
+Checks for usage of `.clone()` on an `&&T`.
+
+### Why is this bad?
+Cloning an `&&T` copies the inner `&T`, instead of
+cloning the underlying `T`.
+
+### Example
+```
+fn main() {
+    let x = vec![1];
+    let y = &&x;
+    let z = y.clone();
+    println!("{:p} {:p}", *y, z); // prints out the same pointer
+}
+```
+\ No newline at end of file