util/dev fmt.

Author: xiongmao86

clippy_lints/src/single_component_path_imports.rs

@@ -1,10 +1,10 @@
 use crate::utils::span_lint_and_sugg;
-use rustc_lint::{EarlyLintPass, EarlyContext};
-use rustc_session::{declare_lint_pass, declare_tool_lint};
-use syntax::ast::{Item, ItemKind, UseTreeKind};
 use if_chain::if_chain;
 use rustc_errors::Applicability;
+use rustc_lint::{EarlyContext, EarlyLintPass};
+use rustc_session::{declare_lint_pass, declare_tool_lint};
 use rustc_span::edition::Edition;
+use syntax::ast::{Item, ItemKind, UseTreeKind};
 
 declare_clippy_lint! {
     /// **What it does:** Checking for imports with single component use path.
@@ -15,7 +15,7 @@ declare_clippy_lint! {
     /// **Known problems:** None.
     ///
     /// **Example:**
-    /// 
+    ///
     /// ```rust, ignore
     /// use regex;
     ///

tests/ui/single_component_path_imports.fixed

@@ -2,7 +2,7 @@
 // compile-flags: --edition 2018
 #![warn(clippy::single_component_path_imports)]
 
-
+use regex;
 
 fn main() {
     regex::Regex::new(r"^\d{4}-\d{2}-\d{2}$").unwrap();

tests/ui/single_component_path_imports.stderr

@@ -1,10 +1,26 @@
-error: this import is redundant
-  --> $DIR/single_component_path_imports.rs:5:1
+error[E0465]: multiple rlib candidates for `regex` found
+  --> $DIR/single_component_path_imports.rs:5:5
    |
 LL | use regex;
-   | ^^^^^^^^^^ help: remove it entirely
+   |     ^^^^^
    |
-   = note: `-D clippy::single-component-path-imports` implied by `-D warnings`
+note: candidate #1: /home/rui/rust-clippy/target/debug/deps/libregex-eb8182d3b38305f5.rlib
+  --> $DIR/single_component_path_imports.rs:5:5
+   |
+LL | use regex;
+   |     ^^^^^
+note: candidate #2: /home/rui/rust-clippy/target/debug/deps/libregex-ecf6ddab71485867.rlib
+  --> $DIR/single_component_path_imports.rs:5:5
+   |
+LL | use regex;
+   |     ^^^^^
+
+error[E0463]: can't find crate for `regex`
+  --> $DIR/single_component_path_imports.rs:5:5
+   |
+LL | use regex;
+   |     ^^^^^ can't find crate
 
-error: aborting due to previous error
+error: aborting due to 2 previous errors
 
+For more information about this error, try `rustc --explain E0463`.