Exclude reexport imports and util/dev fmt again.

clippy_lints/src/methods/mod.rs

@@ -2310,7 +2310,7 @@ fn lint_unwrap(cx: &LateContext<'_, '_>, expr: &hir::Expr<'_>, unwrap_args: &[hi
             &format!("used `unwrap()` on `{}` value", kind,),
             &format!(
                 "if you don't want to handle the `{}` case gracefully, consider \
-                using `expect()` to provide a better panic message",
+                 using `expect()` to provide a better panic message",
                 none_value,
             ),
         );
@@ -2679,7 +2679,7 @@ fn lint_filter_flat_map<'a, 'tcx>(
     if match_trait_method(cx, expr, &paths::ITERATOR) {
         let msg = "called `filter(p).flat_map(q)` on an `Iterator`";
         let hint = "this is more succinctly expressed by calling `.flat_map(..)` \
-            and filtering by returning `iter::empty()`";
+                    and filtering by returning `iter::empty()`";
         span_lint_and_help(cx, FILTER_MAP, expr.span, msg, hint);
     }
 }
@@ -2695,7 +2695,7 @@ fn lint_filter_map_flat_map<'a, 'tcx>(
     if match_trait_method(cx, expr, &paths::ITERATOR) {
         let msg = "called `filter_map(p).flat_map(q)` on an `Iterator`";
         let hint = "this is more succinctly expressed by calling `.flat_map(..)` \
-            and filtering by returning `iter::empty()`";
+                    and filtering by returning `iter::empty()`";
         span_lint_and_help(cx, FILTER_MAP, expr.span, msg, hint);
     }
 }
@@ -3148,7 +3148,7 @@ fn lint_option_as_ref_deref<'a, 'tcx>(
 
         let msg = format!(
             "called `{0}` (or with one of deref aliases) on an Option value. \
-                        This can be done more directly by calling `{1}` instead",
+             This can be done more directly by calling `{1}` instead",
             current_method, hint
         );
         span_lint_and_sugg(

clippy_lints/src/single_component_path_imports.rs

@@ -22,7 +22,13 @@ declare_clippy_lint! {
     /// fn main() {
     ///     regex::Regex::new(r"^\d{4}-\d{2}-\d{2}$").unwrap();
     /// }
-    ///```
+    /// ```
+    /// Better as
+    /// ```rust, ignore
+    /// fn main() {
+    ///     regex::Regex::new(r"^\d{4}-\d{2}-\d{2}$").unwrap();
+    /// }
+    /// ```
     pub SINGLE_COMPONENT_PATH_IMPORTS,
     style,
     "imports with single component path are redundant"
@@ -34,6 +40,7 @@ impl EarlyLintPass for SingleComponentPathImports {
     fn check_item(&mut self, cx: &EarlyContext<'_>, item: &Item) {
         if_chain! {
             if cx.sess.opts.edition == Edition::Edition2018;
+            if !item.vis.node.is_pub();
             if let ItemKind::Use(use_tree) = &item.kind;
             if let segments = &use_tree.prefix.segments;
             if segments.len() == 1;
@@ -45,7 +52,7 @@ impl EarlyLintPass for SingleComponentPathImports {
                     item.span,
                     "this import is redundant",
                     "remove it entirely",
-                    "".to_string(),
+                    String::new(),
                     Applicability::MachineApplicable
                 );
             }

clippy_lints/src/types.rs

@@ -316,7 +316,7 @@ impl Types {
                                 OPTION_OPTION,
                                 hir_ty.span,
                                 "consider using `Option<T>` instead of `Option<Option<T>>` or a custom \
-                                enum if you need to distinguish all 3 cases",
+                                 enum if you need to distinguish all 3 cases",
                             );
                             return; // don't recurse into the type
                         }

tests/ui/single_component_path_imports.fixed

@@ -1,8 +1,11 @@
 // run-rustfix
 // compile-flags: --edition 2018
 #![warn(clippy::single_component_path_imports)]
+#![allow(unused_imports)]
 
 
+use serde as edres;
+pub use serde;
 
 fn main() {
     regex::Regex::new(r"^\d{4}-\d{2}-\d{2}$").unwrap();

tests/ui/single_component_path_imports.rs

@@ -1,9 +1,11 @@
 // run-rustfix
 // compile-flags: --edition 2018
 #![warn(clippy::single_component_path_imports)]
+#![allow(unused_imports)]
 
 use regex;
 use serde as edres;
+pub use serde;
 
 fn main() {
     regex::Regex::new(r"^\d{4}-\d{2}-\d{2}$").unwrap();

tests/ui/single_component_path_imports.stderr

@@ -1,5 +1,5 @@
 error: this import is redundant
-  --> $DIR/single_component_path_imports.rs:5:1
+  --> $DIR/single_component_path_imports.rs:6:1
    |
 LL | use regex;
    | ^^^^^^^^^^ help: remove it entirely