| Element | Missed Instructions | Cov. | Missed Branches | Cov. | Missed | Cxty | Missed | Lines | Missed | Methods | Missed | Classes |
| Total | 8,329 of 8,329 | 0% | 584 of 584 | 0% | 787 | 787 | 1,631 | 1,631 | 493 | 493 | 59 | 59 |
| CoreLibrary.java | | 0% | | 0% | 137 | 137 | 371 | 371 | 111 | 111 | 3 | 3 |
| RubyRegexp.java | | 0% | | 0% | 68 | 68 | 198 | 198 | 24 | 24 | 2 | 2 |
| RubyModule.java | | 0% | | 0% | 102 | 102 | 218 | 218 | 62 | 62 | 8 | 8 |
| RubyArray.java | | 0% | | 0% | 105 | 105 | 126 | 126 | 22 | 22 | 2 | 2 |
| RubyThread.java | | 0% | | 0% | 16 | 16 | 50 | 50 | 15 | 15 | 4 | 4 |
| RubyBignum.java | | 0% | | 0% | 44 | 44 | 51 | 51 | 41 | 41 | 2 | 2 |
| RubyBasicObject.java | | 0% | | 0% | 45 | 45 | 77 | 77 | 29 | 29 | 2 | 2 |
| StringFormatter.java | | 0% | | 0% | 25 | 25 | 68 | 68 | 4 | 4 | 1 | 1 |
| RubyString.java | | 0% | | 0% | 29 | 29 | 58 | 58 | 20 | 20 | 2 | 2 |
| RubyFiber.java | | 0% | | 0% | 19 | 19 | 58 | 58 | 15 | 15 | 6 | 6 |
| RubySymbol.java | | 0% | | 0% | 22 | 22 | 46 | 46 | 15 | 15 | 2 | 2 |
| RubyClass.java | | 0% | | 0% | 28 | 28 | 51 | 51 | 18 | 18 | 2 | 2 |
| RubyProc.java | | 0% | | 0% | 25 | 25 | 37 | 37 | 23 | 23 | 4 | 4 |
| RubyFile.java | | 0% | | 0% | 14 | 14 | 45 | 45 | 7 | 7 | 1 | 1 |
| RubyHash.java | | 0% | | 0% | 19 | 19 | 37 | 37 | 16 | 16 | 2 | 2 |
| RubyEncoding.java | | 0% | n/a | 14 | 14 | 24 | 24 | 14 | 14 | 2 | 2 | |
| RubyRange.java | | 0% | | 0% | 18 | 18 | 33 | 33 | 14 | 14 | 4 | 4 |
| RubyException.java | | 0% | | 0% | 15 | 15 | 22 | 22 | 9 | 9 | 2 | 2 |
| RubyMatchData.java | | 0% | | 0% | 10 | 10 | 19 | 19 | 7 | 7 | 1 | 1 |
| RubyBinding.java | | 0% | | 0% | 10 | 10 | 11 | 11 | 5 | 5 | 1 | 1 |
| RubyTime.java | | 0% | n/a | 7 | 7 | 12 | 12 | 7 | 7 | 2 | 2 | |
| TimeOperations.java | | 0% | n/a | 7 | 7 | 7 | 7 | 7 | 7 | 1 | 1 | |
| RubyEncodingConverter.java | | 0% | n/a | 5 | 5 | 8 | 8 | 5 | 5 | 2 | 2 | |
| RubyNilClass.java | 0% | n/a | 3 | 3 | 4 | 4 | 3 | 3 | 1 | 1 |