Error handling

crates/ruff_cli/src/commands/format.rs

@@ -41,7 +41,7 @@ pub(crate) fn format(cli: &Arguments, overrides: &Overrides) -> anyhow::Result<E
         bail!("no python files in TODO(@konstin) pass them in")
     }
 
-    let results: Vec<Result<(), FormatterIterationError>> = paths
+    let all_success = paths
         .into_par_iter()
         .map(|dir_entry| {
             let dir_entry = dir_entry?;
@@ -65,16 +65,17 @@ pub(crate) fn format(cli: &Arguments, overrides: &Overrides) -> anyhow::Result<E
 
             format_path(path, options)
         })
-        .collect();
-
-    let mut all_success = true;
-    for result in results {
-        if let Err(err) = result {
-            // The inner errors are all flat, i.e. none of them has a source
-            eprintln!("{}", err.to_string().red().bold());
-            all_success = false;
-        }
-    }
+        .map(|result| {
+            match result {
+                Ok(()) => true,
+                Err(err) => {
+                    // The inner errors are all flat, i.e. none of them has a source
+                    eprintln!("{}", err.to_string().red().bold());
+                    false
+                }
+            }
+        })
+        .all(|success| success);
 
     if all_success {
         Ok(ExitStatus::Success)