Why did the community refer to the former Receiver-in-training as a failure? How did this failure affect the rules that applied to Jonas?Characters

The community refers to the person who had been being trained to be the Receiver (Rosemary) as a failure because she had been unable to deal with the pressure of getting all these memories.  She had been unable to handle the pain, among other things.  Because of this, she asked to be released.  The way the rules were, she had this right and they had to release her.

This caused a great deal of trouble because of the memories affecting the community.   Because of this, the rules were changed and Jonas was not allowed to ask to be released.