Source ID 2 was not found when attempting to remove it

[codekiddy <codekiddy gmail com>]

Hello,

Can somebody please explain what means following:

GLib-CRITICAL **: Source ID 2 was not found when attempting to remove it

I'm receiving the above error while running test-app compiled from gio-test.c found in /glib-2.42.1/tests/gio-test.c

Any hint what could be missing and what to do to resolve this?

Thank you!

~codekiddy