shush warn

pttodoest/src/main.rs

@@ -989,6 +989,7 @@ mod tests {
         f.sync_all().unwrap();
     }
 
+    #[allow(dead_code)]
     pub fn file_contains(d: &tempdir::TempDir, fname: &str, content: &str) {
         let p = d.path().join(&fname);
         let file_content = file_content(&p.to_str().unwrap().to_string());