Suggest Both Generic Lifetime Parameter and HRTB

Author: veera-sivarajan

compiler/rustc_error_codes/src/error_codes/E0637.md

@@ -13,7 +13,14 @@ fn underscore_lifetime<'_>(str1: &'_ str, str2: &'_ str) -> &'_ str {
     }
 }
 
-fn and_without_explicit_lifetime<T>()
+fn without_explicit_lifetime<T>()
+where
+    T: Iterator<Item = &u32>,
+                     //^ `&` without an explicit lifetime name
+{
+}
+
+fn without_hrtb<T>()
 where
     T: Into<&u32>,
           //^ `&` without an explicit lifetime name
@@ -40,7 +47,13 @@ fn underscore_lifetime<'a>(str1: &'a str, str2: &'a str) -> &'a str {
     }
 }
 
-fn and_without_explicit_lifetime<T>()
+fn without_explicit_lifetime<'a, T>()
+where
+    T: Iterator<Item = &'a u32>,
+{
+}
+
+fn without_hrtb<T>()
 where
     T: for<'foo> Into<&'foo u32>,
 {