Use slices where a vector is not necessary

1 files changed, 5 insertions, 5 deletions

diff --git a/src/librustc_errors/emitter.rs b/src/librustc_errors/emitter.rs
index 6bcf0d9eff6..f54626d6a20 100644
--- a/src/librustc_errors/emitter.rs
+++ b/src/librustc_errors/emitter.rs
@@ -749,7 +749,7 @@ impl EmitterWriter {
         max
     }
 
-    fn get_max_line_num(&mut self, span: &MultiSpan, children: &Vec<SubDiagnostic>) -> usize {
+    fn get_max_line_num(&mut self, span: &MultiSpan, children: &[SubDiagnostic]) -> usize {
         let mut max = 0;
 
         let primary = self.get_multispan_max_line_num(span);
@@ -954,7 +954,7 @@ impl EmitterWriter {
 
     fn emit_message_default(&mut self,
                             msp: &MultiSpan,
-                            msg: &Vec<(String, Style)>,
+                            msg: &[(String, Style)],
                             code: &Option<DiagnosticId>,
                             level: &Level,
                             max_line_num_len: usize,
@@ -1317,10 +1317,10 @@ impl EmitterWriter {
 
     fn emit_messages_default(&mut self,
                              level: &Level,
-                             message: &Vec<(String, Style)>,
+                             message: &[(String, Style)],
                              code: &Option<DiagnosticId>,
                              span: &MultiSpan,
-                             children: &Vec<SubDiagnostic>,
+                             children: &[SubDiagnostic],
                              suggestions: &[CodeSuggestion]) {
         let max_line_num_len = if self.ui_testing {
             ANONYMIZED_LINE_NUM.len()
@@ -1433,7 +1433,7 @@ fn overlaps(a1: &Annotation, a2: &Annotation, padding: usize) -> bool {
     num_overlap(a1.start_col, a1.end_col + padding, a2.start_col, a2.end_col, false)
 }
 
-fn emit_to_destination(rendered_buffer: &Vec<Vec<StyledString>>,
+fn emit_to_destination(rendered_buffer: &[Vec<StyledString>],
                        lvl: &Level,
                        dst: &mut Destination,
                        short_message: bool)