Fix retry and cancel URLs

app/models/ci/build.rb

@@ -219,12 +219,14 @@ module Ci
     def cancel_url
       if active?
+        Gitlab::Application.routes.url_helpers.
           cancel_namespace_project_build_path(gl_project.namespace, gl_project, self, return_to: request.original_url)
       end
     end
     def retry_url
       if commands.present?
+        Gitlab::Application.routes.url_helpers.
           cancel_namespace_project_build_path(gl_project.namespace, gl_project, self, return_to: request.original_url)
       end
     end