Exit code 1 after successful rip?

[davisg123]

I'm wondering why the child process is exiting with code 1 after success? Is this a bug?

stdout: Rip complete
ZAYN-I Dont Wanna Live Forever (Fifty Shades Darker).mp3	[ 7.95 MB ]
-------------------------------------------------------------------------------
Setting artist: ZAYN
Setting album: Fifty Shades Darker (Original Motion Picture Soundtrack)
Setting title: I Dont Wanna Live Forever (Fifty Shades Darker)
Setting track info: (1, 19)
Setting disc info: (1, 1)
Setting release year: 2017
Adding cover image
Time: 04:06	MPEG1, Layer III	[ ~270 kb/s @ 44100 Hz - Joint Stereo ]
-------------------------------------------------------------------------------
ID3 v2.4: 7 frames
Writing ID3 version v2.4
-------------------------------------------------------------------------------
Logging out...

child process exited with code 1 and signal null