I am trying to run the lesson3-imdb notebook on Google Colab and when I get to learn.lr_find() the estimated time remaining is about 35 hours. Is this a bug? Am I doing something wrong? Any help is much appreciated.
Did you activate the GPU? I think by default google colab uses the CPU.
Oh my god, sometimes I am just stupid. Thanks for this catch! I’ll leave this in here for anyone else unfortunate enough to make this particular mistake. 
It still says 1.5h 1.5 minutes, but I guess that is just how long it takes.