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-rw-r--r--src/librustc_metadata/decoder.rs2
1 files changed, 1 insertions, 1 deletions
diff --git a/src/librustc_metadata/decoder.rs b/src/librustc_metadata/decoder.rs
index d98e8d62c2d..e718a107bbe 100644
--- a/src/librustc_metadata/decoder.rs
+++ b/src/librustc_metadata/decoder.rs
@@ -366,7 +366,7 @@ impl<'a, 'tcx> SpecializedDecoder<ty::GenericPredicates<'tcx>> for DecodeContext
                 } else {
                     ty::Predicate::decode(self)
                 }
-            }).collect()?
+            }).collect::<Result<Vec<_>, _>>()?
         })
     }
 }