Index: 20131004113137_support_for_multiple_commit_keywords.rb
===================================================================
--- 20131004113137_support_for_multiple_commit_keywords.rb	(revision 19478)
+++ 20131004113137_support_for_multiple_commit_keywords.rb	(working copy)
@@ -2,9 +2,9 @@
   def up
     # Replaces commit_fix_keywords, commit_fix_status_id, commit_fix_done_ratio settings
     # with commit_update_keywords setting
-    keywords = Setting.where(:name => 'commit_fix_keywords').limit(1).pluck(:value).first
-    status_id = Setting.where(:name => 'commit_fix_status_id').limit(1).pluck(:value).first
-    done_ratio = Setting.where(:name => 'commit_fix_done_ratio').limit(1).pluck(:value).first
+    keywords = Setting.where(:name => 'commit_fix_keywords').pick(:value)
+    status_id = Setting.where(:name => 'commit_fix_status_id').pick(:value)
+    done_ratio = Setting.where(:name => 'commit_fix_done_ratio').pick(:value)
     if keywords.present?
       Setting.commit_update_keywords = [{'keywords' => keywords, 'status_id' => status_id, 'done_ratio' => done_ratio}]
     end
Index: 20141029181752_add_trackers_default_status_id.rb
===================================================================
--- 20141029181752_add_trackers_default_status_id.rb	(revision 19478)
+++ 20141029181752_add_trackers_default_status_id.rb	(working copy)
@@ -2,8 +2,8 @@
   def up
     add_column :trackers, :default_status_id, :integer
 
-    status_id = IssueStatus.where(:is_default => true).pluck(:id).first
-    status_id ||= IssueStatus.order(:position).pluck(:id).first
+    status_id = IssueStatus.where(:is_default => true).pick(:id)
+    status_id ||= IssueStatus.order(:position).pick(:id)
     if status_id
       Tracker.update_all :default_status_id => status_id
     end
Index: 20141029181824_remove_issue_statuses_is_default.rb
===================================================================
--- 20141029181824_remove_issue_statuses_is_default.rb	(revision 19478)
+++ 20141029181824_remove_issue_statuses_is_default.rb	(working copy)
@@ -6,7 +6,7 @@
   def down
     add_column :issue_statuses, :is_default, :boolean, :null => false, :default => false
     # Restores the first status as default
-    default_status_id = IssueStatus.order(:position).pluck(:id).first
+    default_status_id = IssueStatus.order(:position).pick(:id)
     IssueStatus.where(:id => default_status_id).update_all(:is_default => true)
   end
 end