Revert "update gems" , may be causing mem leak

This reverts commit 5eea774f54.

Gemfile.lock

@@ -56,11 +56,11 @@ GEM
     binding_of_caller (0.7.2)
       debug_inspector (>= 0.0.1)
     builder (3.2.2)
-    celluloid (0.16.0)
-      timers (~> 4.0.0)
+    celluloid (0.15.2)
+      timers (~> 1.1.0)
     certified (1.0.0)
     coderay (1.1.0)
-    connection_pool (2.1.1)
+    connection_pool (2.0.0)
     crass (0.2.1)
     daemons (1.1.9)
     debug_inspector (0.0.2)
@@ -181,11 +181,10 @@ GEM
       sorcerer (>= 0.3.7)
     guess_html_encoding (0.0.9)
     handlebars-source (2.0.0)
-    hashie (3.3.2)
+    hashie (3.3.1)
     highline (1.6.21)
     hike (1.2.3)
     hiredis (0.5.2)
-    hitimes (1.2.2)
     htmlentities (4.3.3)
     i18n (0.6.11)
     image_optim (0.9.1)
@@ -201,7 +200,7 @@ GEM
     jquery-rails (3.1.2)
       railties (>= 3.0, < 5.0)
       thor (>= 0.14, < 2.0)
-    json (1.8.2)
+    json (1.8.1)
     jwt (1.0.0)
     kgio (2.9.2)
     librarian (0.1.2)
@@ -222,7 +221,7 @@ GEM
     metaclass (0.0.4)
     method_source (0.8.2)
     mime-types (1.25.1)
-    mini_portile (0.6.2)
+    mini_portile (0.6.1)
     minitest (5.4.2)
     mocha (1.1.0)
       metaclass (~> 0.0.1)
@@ -237,7 +236,7 @@ GEM
       net-ssh (>= 2.6.5)
     net-ssh (2.9.1)
     netrc (0.7.7)
-    nokogiri (1.6.6.2)
+    nokogiri (1.6.5)
       mini_portile (~> 0.6.0)
     nokogumbo (1.1.12)
       nokogiri
@@ -248,7 +247,7 @@ GEM
       multi_json (~> 1.3)
       multi_xml (~> 0.5)
       rack (~> 1.2)
-    oj (2.11.4)
+    oj (2.11.1)
     omniauth (1.2.2)
       hashie (>= 1.2, < 4)
       rack (~> 1.0)
@@ -391,9 +390,9 @@ GEM
     shoulda-context (1.2.1)
     shoulda-matchers (2.7.0)
       activesupport (>= 3.0.0)
-    sidekiq (3.3.1)
-      celluloid (>= 0.16.0)
-      connection_pool (>= 2.1.1)
+    sidekiq (3.2.5)
+      celluloid (= 0.15.2)
+      connection_pool (>= 2.0.0)
       json
       redis (>= 3.0.6)
       redis-namespace (>= 1.3.1)
@@ -435,8 +434,7 @@ GEM
     thread_safe (0.3.4)
     tilt (1.4.1)
     timecop (0.7.1)
-    timers (4.0.1)
-      hitimes
+    timers (1.1.0)
     treetop (1.4.15)
       polyglot
       polyglot (>= 0.3.1)