I am using fswebcam on a debian image on a rpi3 with a logitech webcam. Fswebcam works great... when it works. I've plugged in a powered USB to make sure it was not a power issue of some sort, but every other time I call the fswebcam command it results in an error message saying that /dev/video0 is busy. If I wait a few seconds and try again it works just fine. This pattern typically repeats where one attempt fails due to device busy, then the 2nd attempt works. I am not sure what to try anymore to resolve this - anyone else had this issue or know better what I might try?