Auto merge of #37843 - nikomatsakis:issue-33685-hard-error, r=eddyb

make HR_LIFETIME_IN_ASSOC_TYPE deny-by-default

It's time to fix issue #32330.

cc #33685
cc @arielb1

src/librustc/lint/builtin.rs

@@ -157,7 +157,7 @@
 
 declare_lint! {
     pub HR_LIFETIME_IN_ASSOC_TYPE,
-    Warn,
+    Deny,
     "binding for associated type references higher-ranked lifetime \
      that does not appear in the trait input types"
 }