Fix test

Author: topecongiro

rustfmt-core/rustfmt-bin/src/bin/main.rs

@@ -520,7 +520,11 @@ fn format(opt: Opt) -> Result<i32> {
         );
     }
 
-    let has_diff = emit_format_report(format_report, &mut stdout(), opt.emitter_config(EmitMode::Files))?;
+    let has_diff = emit_format_report(
+        format_report,
+        &mut stdout(),
+        opt.emitter_config(EmitMode::Files),
+    )?;
 
     Ok(if opt.check && has_diff { 1 } else { 0 })
 }

rustfmt-core/rustfmt-lib/src/test/mod.rs

@@ -540,7 +540,7 @@ fn check_files(files: Vec<PathBuf>, opt_config: &Option<PathBuf>) -> (Vec<Format
         debug!("Testing '{}'...", file_name.display());
 
         match idempotent_check(&file_name, &opt_config) {
-            Ok(ref report) if report.has_warnings() => {
+            Ok(ref report) if report.has_errors() => {
                 print!("{}", FormatReportFormatterBuilder::new(&report).build());
                 fails += 1;
             }