From 29efeb7a65411e2c90693266bafb39c8417f21bb Mon Sep 17 00:00:00 2001
From: Lzu Tao <taolzu@gmail.com>
Date: Wed, 9 Sep 2020 15:46:33 +0000
Subject: [PATCH] partially revert #73771

---
 src/librustdoc/clean/inline.rs | 12 ------------
 1 file changed, 12 deletions(-)

diff --git a/src/librustdoc/clean/inline.rs b/src/librustdoc/clean/inline.rs
index 50cb987cf0870..2d8e98413542a 100644
--- a/src/librustdoc/clean/inline.rs
+++ b/src/librustdoc/clean/inline.rs
@@ -341,18 +341,6 @@ pub fn build_impl(
                 return;
             }
         }
-
-        // Skip foreign unstable traits from lists of trait implementations and
-        // such. This helps prevent dependencies of the standard library, for
-        // example, from getting documented as "traits `u32` implements" which
-        // isn't really too helpful.
-        if let Some(trait_did) = associated_trait {
-            if let Some(stab) = cx.tcx.lookup_stability(trait_did.def_id) {
-                if stab.level.is_unstable() {
-                    return;
-                }
-            }
-        }
     }
 
     let for_ = if let Some(did) = did.as_local() {