unwrap -> expect

rust-lang · Dec 21, 2019 · cabe665 · cabe665
1 parent d977e5b
commit cabe665
Showing 1 changed file with 1 addition and 1 deletion.
diff --git a/src/librustc_parse/parser/ty.rs b/src/librustc_parse/parser/ty.rs
@@ -390,7 +390,7 @@ impl<'a> Parser<'a> {
         negative_bounds: Vec<Span>,
     ) {
         let negative_bounds_len = negative_bounds.len();
-        let last_span = *negative_bounds.last().unwrap();
+        let last_span = *negative_bounds.last().expect("no negative bounds, but still error?");
         let mut err = self.struct_span_err(
             negative_bounds,
             "negative bounds are not supported",