Unwrap the results of type folders

Co-authored-by: Alan Egerton <eggyal@gmail.com>

2 files changed, 2 insertions, 1 deletions

diff --git a/src/librustdoc/clean/auto_trait.rs b/src/librustdoc/clean/auto_trait.rs
index 3a6f611660e..04fe1dccce4 100644
--- a/src/librustdoc/clean/auto_trait.rs
+++ b/src/librustdoc/clean/auto_trait.rs
@@ -449,7 +449,7 @@ impl<'a, 'tcx> AutoTraitFinder<'a, 'tcx> {
                         _ => false,
                     }
             })
-            .map(|p| p.fold_with(&mut replacer));
+            .map(|p| p.fold_with(&mut replacer).into_ok());
 
         let mut generic_params =
             (tcx.generics_of(item_def_id), tcx.explicit_predicates_of(item_def_id))
diff --git a/src/librustdoc/lib.rs b/src/librustdoc/lib.rs
index b6311abb5c3..6ba56fe01a9 100644
--- a/src/librustdoc/lib.rs
+++ b/src/librustdoc/lib.rs
@@ -18,6 +18,7 @@
 #![feature(type_ascription)]
 #![feature(iter_intersperse)]
 #![recursion_limit = "256"]
+#![feature(unwrap_infallible)]
 #![warn(rustc::internal)]
 
 #[macro_use]