Related: Benchmark for build performance, Ruby Line Break for syntax configuration
- Test regresstions
- Crystalball
- Parallel test executions
- Packages and visibility control
- Packwerk
- Remote build and test caching
- Remote build and test executions only in JRuby
- Compile C/Java programs with CRuby/JRuby
- Better debugg rdbg
- test sharding