If a build displays the "waiting" status and you are unsure why there are two potential reasons. Navigate to the build and look for the `Queued:` portion in the top of the build. There are two numbers.
This queue is where your build is placed when your plan's resources are exhausted at the current moment, such as if you do not have any free build containers available.
This queue shows how long it took to acquire the needed container from our system. If this number is abnormally long, this may indicate a disruption in our service. Check status.circleci.com or contact support.