Running 8 test cases... Running tests using path: /data/tests Retesteth config path: /home/ubuntu/.retesteth Active client configurations: 't8ntool ' Running tests for config 'Ethereum GO on StateTool' 2 Test Case "dfArrowGlacier": (1 of 8) 20%... 40%... 60%... 80%... 100% Tests finished: 5 dfArrowGlacier time: 98.734102 Running tests for config 'Ethereum GO on StateTool' 2 Test Case "dfByzantium": (2 of 8) 100% Tests finished: 1 dfByzantium time: 54.577994 Running tests for config 'Ethereum GO on StateTool' 2 Test Case "dfConstantinople": (3 of 8) 100% Tests finished: 1 dfConstantinople time: 54.376252 Running tests for config 'Ethereum GO on StateTool' 2 Test Case "dfEIP2384": (4 of 8) 33%... 66%... 100% Tests finished: 3 dfEIP2384 time: 80.929591 WARNING: /data/tests/src/DifficultyTestsFiller/dfExample does not exist! WARNING: dfExample no tests detected in folder! Running tests for config 'Ethereum GO on StateTool' 2 Tests finished: 0 dfExample time: 0.000002 Running tests for config 'Ethereum GO on StateTool' 2 Test Case "dfFrontier": (6 of 8) 100% Tests finished: 1 dfFrontier time: 54.320679 Running tests for config 'Ethereum GO on StateTool' 2 Test Case "dfGrayGlacier": (7 of 8) 20%... 40%... 60%... 80%... 100% Tests finished: 5 dfGrayGlacier time: 107.284757 Running tests for config 'Ethereum GO on StateTool' 2 Test Case "dfHomestead": (8 of 8) 100% Tests finished: 1 dfHomestead time: 54.790049 *** No errors detected  *** Execution time stats Total Tests: : 27 Total Time: : 505.013426 dfGrayGlacier time: 107.284757 dfArrowGlacier time: 98.734102 dfEIP2384 time: 80.929591 dfHomestead time: 54.790049 dfByzantium time: 54.577994 dfConstantinople time: 54.376252 dfFrontier time: 54.320679 dfExample time: 0.000002