1. A computer-implemented method comprising: generating, at a client computing device, one or more execution identifiers, during an execution of a first program on the client computing device, wherein each of the one or more execution identifiers corresponds to a function of the first program; generating, at the client computing device, an error-likeliness score for each of the execution identifiers based on an analysis of the one or more execution identifiers; and determining, at the client computing device, an error-weight for each of the execution identifiers based on the generated error-likeliness scores for instances of the execution identifiers.