reword to "consider borrowing here: {suggestion}"

Author: estebank

src/librustc/traits/error_reporting.rs

@@ -835,7 +835,7 @@ impl<'a, 'gcx, 'tcx> InferCtxt<'a, 'gcx, 'tcx> {
                     if let hir::ExprIndex(_, _) = expr.node {
                         if let Ok(snippet) = self.tcx.sess.codemap().span_to_snippet(expr.span) {
                             err.span_suggestion(expr.span,
-                                                "consider a slice instead",
+                                                "consider borrowing here",
                                                 format!("&{}", snippet));
                         }
                     }

src/test/ui/suggestions/str-array-assignment.rs

@@ -20,7 +20,7 @@ fn main() { //~ NOTE expected `()` because of default return type
   //~| NOTE expected type
   let v = s[..2];
   //~^ ERROR the trait bound `str: std::marker::Sized` is not satisfied
-  //~| HELP consider a slice instead
+  //~| HELP consider borrowing here
   //~| NOTE `str` does not have a constant size known at compile-time
   //~| HELP the trait `std::marker::Sized` is not implemented for `str`
   //~| NOTE all local variables must have a statically known size

src/test/ui/suggestions/str-array-assignment.stderr

@@ -23,7 +23,7 @@ error[E0277]: the trait bound `str: std::marker::Sized` is not satisfied
   --> $DIR/str-array-assignment.rs:21:7
    |
 21 |   let v = s[..2];
-   |       ^   ------ help: consider a slice instead: `&s[..2]`
+   |       ^   ------ help: consider borrowing here: `&s[..2]`
    |       |
    |       `str` does not have a constant size known at compile-time
    |