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: 99.554246 Running tests for config 'Ethereum GO on StateTool' 2 Test Case "dfByzantium": (2 of 8) 100% Tests finished: 1 dfByzantium time: 55.084705 Running tests for config 'Ethereum GO on StateTool' 2 Test Case "dfConstantinople": (3 of 8) 100% Tests finished: 1 dfConstantinople time: 55.145450 Running tests for config 'Ethereum GO on StateTool' 2 Test Case "dfEIP2384": (4 of 8) 33%... 66%... 100% Tests finished: 3 dfEIP2384 time: 81.349096 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: 54.666287 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: 107.768018 Running tests for config 'Ethereum GO on StateTool' 2 Test Case "dfHomestead": (8 of 8) 100% Tests finished: 1 dfHomestead time: 55.148658 *** No errors detected  *** Execution time stats Total Tests: : 27 Total Time: : 508.716462 dfGrayGlacier time: 107.768018 dfArrowGlacier time: 99.554246 dfEIP2384 time: 81.349096 dfHomestead time: 55.148658 dfConstantinople time: 55.145450 dfByzantium time: 55.084705 dfFrontier time: 54.666287 dfExample time: 0.000002