never_loop

crates/parser/src/tests/sourcegen_inline_tests.rs

@@ -22,7 +22,7 @@ fn install_tests(tests: &HashMap<String, Test>, into: &str) {
         }
         // ok is never actually read, but it needs to be specified to create a Test in existing_tests
         let existing = existing_tests(&tests_dir, true);
-        for t in existing.keys().filter(|&t| !tests.contains_key(t)) {
+        if let Some(t) = existing.keys().find(|&t| !tests.contains_key(t)) {
             panic!("Test is deleted: {t}");
         }
 

crates/rust-analyzer/tests/slow-tests/tidy.rs

@@ -379,7 +379,7 @@ fn finish(self) {
             )
         }
 
-        for path in self.contains_fixme {
+        if let Some(path) = self.contains_fixme.first() {
             panic!("FIXME doc in a fully-documented crate: {}", path.display())
         }
     }