Auto merge of #47690 - estebank:for-block-277, r=nikomatsakis

For E0277 on `for` loops, point at the "head" expression

When E0277's span points at a `for` loop, the actual issue is in the
element being iterated. Instead of pointing at the entire loop, point
only at the first line (when possible) so that the span ends in the
element for which E0277 was triggered.

1 files changed, 1 insertions, 1 deletions

diff --git a/src/test/compile-fail/issue-20605.rs b/src/test/compile-fail/issue-20605.rs
index b7c544c7848..5eb0e4360fc 100644
--- a/src/test/compile-fail/issue-20605.rs
+++ b/src/test/compile-fail/issue-20605.rs
@@ -10,7 +10,7 @@
 
 fn changer<'a>(mut things: Box<Iterator<Item=&'a mut u8>>) {
     for item in *things { *item = 0 }
-//~^ ERROR `std::iter::Iterator<Item=&mut u8>: std::marker::Sized` is not satisfied
+//~^ ERROR the trait bound `std::iter::Iterator<Item=&mut u8>: std::marker::Sized` is not satisfied
 }
 
 fn main() {}