diff -r 4a0ad0602b99 -r 983e338eeb50 src/java.net.http/share/classes/jdk/internal/net/http/PlainHttpConnection.java
--- a/src/java.net.http/share/classes/jdk/internal/net/http/PlainHttpConnection.java	Fri Feb 09 15:22:31 2018 +0000
+++ b/src/java.net.http/share/classes/jdk/internal/net/http/PlainHttpConnection.java	Fri Feb 09 18:50:31 2018 +0000
@@ -187,7 +187,9 @@
         try {
             Log.logTrace("Closing: " + toString());
             chan.close();
-        } catch (IOException e) {}
+        } catch (IOException e) {
+            Log.logTrace("Closing resulted in " + e);
+        }
     }
 
     @Override