Use question_mark feature in librustc_errors.

Author: ahmedcharles

src/librustc_errors/emitter.rs

@@ -882,45 +882,45 @@ impl Destination {
         match style {
             Style::FileNameStyle | Style::LineAndColumn => {}
             Style::LineNumber => {
-                try!(self.start_attr(term::Attr::Bold));
+                self.start_attr(term::Attr::Bold)?;
                 if cfg!(windows) {
-                    try!(self.start_attr(term::Attr::ForegroundColor(term::color::BRIGHT_CYAN)));
+                    self.start_attr(term::Attr::ForegroundColor(term::color::BRIGHT_CYAN))?;
                 } else {
-                    try!(self.start_attr(term::Attr::ForegroundColor(term::color::BRIGHT_BLUE)));
+                    self.start_attr(term::Attr::ForegroundColor(term::color::BRIGHT_BLUE))?;
                 }
             }
             Style::ErrorCode => {
-                try!(self.start_attr(term::Attr::Bold));
-                try!(self.start_attr(term::Attr::ForegroundColor(term::color::BRIGHT_MAGENTA)));
+                self.start_attr(term::Attr::Bold)?;
+                self.start_attr(term::Attr::ForegroundColor(term::color::BRIGHT_MAGENTA))?;
             }
             Style::Quotation => {}
             Style::OldSchoolNote => {
-                try!(self.start_attr(term::Attr::Bold));
-                try!(self.start_attr(term::Attr::ForegroundColor(term::color::BRIGHT_GREEN)));
+                self.start_attr(term::Attr::Bold)?;
+                self.start_attr(term::Attr::ForegroundColor(term::color::BRIGHT_GREEN))?;
             }
             Style::OldSchoolNoteText | Style::HeaderMsg => {
-                try!(self.start_attr(term::Attr::Bold));
+                self.start_attr(term::Attr::Bold)?;
                 if cfg!(windows) {
-                    try!(self.start_attr(term::Attr::ForegroundColor(term::color::BRIGHT_WHITE)));
+                    self.start_attr(term::Attr::ForegroundColor(term::color::BRIGHT_WHITE))?;
                 }
             }
             Style::UnderlinePrimary | Style::LabelPrimary => {
-                try!(self.start_attr(term::Attr::Bold));
-                try!(self.start_attr(term::Attr::ForegroundColor(lvl.color())));
+                self.start_attr(term::Attr::Bold)?;
+                self.start_attr(term::Attr::ForegroundColor(lvl.color()))?;
             }
             Style::UnderlineSecondary |
             Style::LabelSecondary => {
-                try!(self.start_attr(term::Attr::Bold));
+                self.start_attr(term::Attr::Bold)?;
                 if cfg!(windows) {
-                    try!(self.start_attr(term::Attr::ForegroundColor(term::color::BRIGHT_CYAN)));
+                    self.start_attr(term::Attr::ForegroundColor(term::color::BRIGHT_CYAN))?;
                 } else {
-                    try!(self.start_attr(term::Attr::ForegroundColor(term::color::BRIGHT_BLUE)));
+                    self.start_attr(term::Attr::ForegroundColor(term::color::BRIGHT_BLUE))?;
                 }
             }
             Style::NoStyle => {}
             Style::Level(l) => {
-                try!(self.start_attr(term::Attr::Bold));
-                try!(self.start_attr(term::Attr::ForegroundColor(l.color())));
+                self.start_attr(term::Attr::Bold)?;
+                self.start_attr(term::Attr::ForegroundColor(l.color()))?;
             }
         }
         Ok(())
@@ -960,4 +960,4 @@ impl Write for Destination {
             Raw(ref mut w) => w.flush(),
         }
     }
-}
+}