Add must_use

crates/ruff_linter/src/rule_selector.rs

@@ -243,6 +243,17 @@ pub struct PreviewOptions {
     pub require_explicit: bool,
 }
 
+impl PreviewOptions {
+    /// Return a copy with the same preview mode setting but require explicit disabled.
+    #[must_use]
+    pub fn without_require_explicit(&self) -> Self {
+        Self {
+            mode: self.mode,
+            require_explicit: false,
+        }
+    }
+}
+
 #[cfg(feature = "schemars")]
 mod schema {
     use itertools::Itertools;

crates/ruff_workspace/src/configuration.rs

@@ -714,7 +714,9 @@ impl LintConfiguration {
             .collect();
 
         // The fixable set keeps track of which rules are fixable.
-        let mut fixable_set: RuleSet = RuleSelector::All.rules(&preview).collect();
+        let mut fixable_set: RuleSet = RuleSelector::All
+            .rules(&preview.without_require_explicit())
+            .collect();
 
         // Ignores normally only subtract from the current set of selected
         // rules.  By that logic the ignore in `select = [], ignore = ["E501"]`