dispose pipe with physical connection; update lib; use dedicated db for FlushFetchRandomKey()

StackExchange.Redis.Tests/Keys.cs

@@ -29,11 +29,11 @@ public void TestScan()
         }
 
         [Fact]
-        public void RandomKey()
+        public void FlushFetchRandomKey()
         {
             using (var conn = Create(allowAdmin: true))
             {
-                var db = conn.GetDatabase();
+                var db = conn.GetDatabase(7);
                 conn.GetServer(TestConfig.Current.MasterServerAndPort).FlushDatabase();
                 string anyKey = db.KeyRandom();
 

StackExchange.Redis/StackExchange.Redis.csproj

@@ -24,6 +24,6 @@
   </ItemGroup>
   
   <ItemGroup>
-    <PackageReference Include="Pipelines.Sockets.Unofficial" Version="0.2.1-alpha.51" />
+    <PackageReference Include="Pipelines.Sockets.Unofficial" Version="0.2.1-alpha.52" />
   </ItemGroup>
 </Project>
\ No newline at end of file

StackExchange.Redis/StackExchange/Redis/ConnectionMultiplexer.cs

@@ -1564,6 +1564,7 @@ private async Task<ServerEndPoint> NominatePreferredMaster(TextWriter log, Serve
             if (useTieBreakers)
             {   // count the votes
                 uniques = new Dictionary<string, int>(StringComparer.OrdinalIgnoreCase);
+                LogLocked(log, "Waiting for tiebreakers...");
                 await WaitAllIgnoreErrorsAsync(tieBreakers, 50, log).ForAwait();
                 for (int i = 0; i < tieBreakers.Length; i++)
                 {

StackExchange.Redis/StackExchange/Redis/PhysicalConnection.cs

@@ -127,6 +127,7 @@ public void Dispose()
                 try { ioPipe.Output?.Complete(); } catch { }
                 ioPipe.Output?.Complete();
             }
+            try { using (ioPipe as IDisposable) { } } catch { }
 
             if (socketToken.HasValue)
             {

TestConsole/TestConsole.csproj

@@ -14,7 +14,7 @@
     <ProjectReference Include="..\StackExchange.Redis\StackExchange.Redis.csproj" />
   </ItemGroup>
   <ItemGroup>
-    <PackageReference Include="Pipelines.Sockets.Unofficial" Version="0.2.1-alpha.51" />
+    <PackageReference Include="Pipelines.Sockets.Unofficial" Version="0.2.1-alpha.52" />
   </ItemGroup>
 
 </Project>