Update compiler error 0029 to use new error format.

Author: silenuss

src/librustc_typeck/check/_match.rs

@@ -93,13 +93,12 @@ impl<'a, 'gcx, 'tcx> FnCtxt<'a, 'gcx, 'tcx> {
                         end.span
                     };
 
-                    // Note: spacing here is intentional, we want a space before "start" and "end".
-                    span_err!(tcx.sess, span, E0029,
-                              "only char and numeric types are allowed in range patterns\n \
-                               start type: {}\n end type: {}",
-                              self.ty_to_string(lhs_ty),
-                              self.ty_to_string(rhs_ty)
-                    );
+                    struct_span_err!(tcx.sess, span, E0029,
+                        "only char and numeric types are allowed in range patterns")
+                        .span_label(span, &format!("ranges require char or numeric types"))
+                        .note(&format!("start type: {}", self.ty_to_string(lhs_ty)))
+                        .note(&format!("end type: {}", self.ty_to_string(rhs_ty)))
+                        .emit();
                     return;
                 }
 

src/test/compile-fail/E0029.rs

@@ -12,7 +12,11 @@ fn main() {
     let s = "hoho";
 
     match s {
-        "hello" ... "world" => {} //~ ERROR E0029
+        "hello" ... "world" => {}
+        //~^ ERROR only char and numeric types are allowed in range patterns
+        //~| NOTE ranges require char or numeric types
+        //~| NOTE start type: &'static str
+        //~| NOTE end type: &'static str
         _ => {}
     }
 }