diff --git a/activerecord/test/cases/connection_pool_test.rb b/activerecord/test/cases/connection_pool_test.rb
index aa1f5e6bad..8287b35aaf 100644
--- a/activerecord/test/cases/connection_pool_test.rb
+++ b/activerecord/test/cases/connection_pool_test.rb
@@ -225,7 +225,7 @@ module ActiveRecord
         threads = expected.map do |i|
           t = Thread.new {
             begin
-              conn = @pool.checkout # never checked back in
+              @pool.checkout # never checked back in
               mutex.synchronize { order << i }
             rescue => e
               mutex.synchronize { errors << e }
@@ -262,7 +262,7 @@ module ActiveRecord
         make_thread = proc do |i|
           t = Thread.new {
             begin
-              conn = @pool.checkout # never checked back in
+              @pool.checkout # never checked back in
               mutex.synchronize { successes << i }
             rescue => e
               mutex.synchronize { errors << e }
diff --git a/activerecord/test/cases/query_cache_test.rb b/activerecord/test/cases/query_cache_test.rb
index f36e879305..08f655d7fa 100644
--- a/activerecord/test/cases/query_cache_test.rb
+++ b/activerecord/test/cases/query_cache_test.rb
@@ -151,11 +151,6 @@ class QueryCacheTest < ActiveRecord::TestCase
   end
 
   def test_cache_does_not_wrap_string_results_in_arrays
-    if current_adapter?(:SQLite3Adapter)
-      require 'sqlite3/version'
-      sqlite3_version = RUBY_PLATFORM =~ /java/ ? Jdbc::SQLite3::VERSION : SQLite3::VERSION
-    end
-
     Task.cache do
       # Oracle adapter returns count() as Fixnum or Float
       if current_adapter?(:OracleAdapter)