This data set will be released as part of the following publication. "Root cause prediction based on bug reports" by T. Hirsch and B. Hofer [in review] This release consists of a data set of 54755 "bug" labeled issues reports collected from 103 open source projects hosted on GitHub. 10459 of which are considered "benchmark complete", and they contain: issue message, commit messages, java aware diff statistics, change location down to method level, GitHub issue metadata, and commit metadata. Please have a look at the corresponding publication for a detailed description of applied heuristics and filter criteria.