Auto merge of #21680 - japaric:slice, r=alexcrichton

Replaces `slice_*` method calls with slicing syntax, and removes `as_slice()` calls that are redundant due to `Deref`.

2 files changed, 2 insertions, 2 deletions

diff --git a/src/test/run-make/unicode-input/multiple_files.rs b/src/test/run-make/unicode-input/multiple_files.rs
index eda89f2344b..e57f026889f 100644
--- a/src/test/run-make/unicode-input/multiple_files.rs
+++ b/src/test/run-make/unicode-input/multiple_files.rs
@@ -65,6 +65,6 @@ fn main() {
 
         // positive test so that this test will be updated when the
         // compiler changes.
-        assert!(err.as_slice().contains("expected item, found"))
+        assert!(err.contains("expected item, found"))
     }
 }
diff --git a/src/test/run-make/unicode-input/span_length.rs b/src/test/run-make/unicode-input/span_length.rs
index d387b9d71e3..28b993ba69b 100644
--- a/src/test/run-make/unicode-input/span_length.rs
+++ b/src/test/run-make/unicode-input/span_length.rs
@@ -63,6 +63,6 @@ fn main() {
         // the span should end the line (e.g no extra ~'s)
         let expected_span = format!("^{}\n", repeat("~").take(n - 1)
                                                         .collect::<String>());
-        assert!(err.as_slice().contains(expected_span.as_slice()));
+        assert!(err.contains(expected_span.as_slice()));
     }
 }