Add failed() on InteractsWithQueue.

Allow to failed a job when using InteractsWithQueue instead of just
deleting the job.

Signed-off-by: crynobone <crynobone@gmail.com>

src/Illuminate/Queue/InteractsWithQueue.php

@@ -13,6 +13,16 @@ trait InteractsWithQueue
      */
     protected $job;
 
+    /**
+     * Get the number of times the job has been attempted.
+     *
+     * @return int
+     */
+    public function attempts()
+    {
+        return $this->job ? $this->job->attempts() : 1;
+    }
+
     /**
      * Delete the job from the queue.
      *
@@ -26,26 +36,28 @@ public function delete()
     }
 
     /**
-     * Release the job back into the queue.
+     * Fail the job from the queue.
      *
-     * @param  int   $delay
      * @return void
      */
-    public function release($delay = 0)
+    public function failed()
     {
         if ($this->job) {
-            return $this->job->release($delay);
+            return $this->job->failed();
         }
     }
 
     /**
-     * Get the number of times the job has been attempted.
+     * Release the job back into the queue.
      *
-     * @return int
+     * @param  int   $delay
+     * @return void
      */
-    public function attempts()
+    public function release($delay = 0)
     {
-        return $this->job ? $this->job->attempts() : 1;
+        if ($this->job) {
+            return $this->job->release($delay);
+        }
     }
 
     /**