add completions for clippy lint in attributes

Signed-off-by: Benjamin Coenen <[email protected]>

Author: bnjjj

xtask/src/codegen/gen_lint_completions.rs

@@ -87,7 +87,8 @@ fn generate_descriptor_clippy(path: &Path) -> Result<proc_macro2::TokenStream> {
             let prefix_to_strip = r#""What it does": ""#;
             let suffix_to_strip = r#"","#;
 
-            clippy_lints.last_mut().expect("clippy lint must already exist").help = line
+            let clippy_lint = clippy_lints.last_mut().expect("clippy lint must already exist");
+            clippy_lint.help = line
                 .strip_prefix(prefix_to_strip)
                 .expect("should be prefixed by what it does")
                 .strip_suffix(suffix_to_strip)