/usr/bin/retesteth -t GeneralStateTests/stExample -- --clients ethereumjs --singletest add11 -j1 --nologcolor --exectimelog --testpath /tests 
Running tests using path: /tests
Running 1 test case...
Options path `/root/.retesteth` doesn't exist, attempt to create a new directory
Retesteth config path: /root/.retesteth
Active client configurations: 'ethereumjs '
Filter: 'add11'
.retesteth/ethereumjs/setup.sh Using ethereumjs path: '/ethereumjs'
npm warn exec The following package was not found and will be installed: ts-node@10.9.2
.retesteth/ethereumjs/setup.sh Ethereumjs daemon failed to start
Running tests for config 'EthereumJS Transition Tool' 2
Test Case "stExample": (1 of 1)
100%
WARNING: Reading empty result for /root/.retesteth/ethereumjs/start.sh -v
Instantiated: ""
Tests finished: 1
stExample time: 2.86, cputime: 0.02 (0%), t8ntime: 0.99 (34%)
Error: Tool returned empty file: /dev/shm/4a0ac1eb-fe1d-4231-9d9b-c1f84cdf5f8e/out.json
 (GeneralStateTests/stExample/add11, fork: Berlin, TrInfo: d: 0, g: 0, v: 0, TrData: ` 0x..`)

--------
TestOutputHelper detected 1 errors during test execution!
/retesteth/retesteth/helpers/TestOutputHelper.cpp(240): error: in "GeneralStateTests/stExample": 

*** 1 failure is detected in the test module "EthereumTests"
*** Total Tests Run: 0

*** Execution time stats
Total Time:                               : 2.86            :    0.02 (0%)              :    0.99 (34%)
stExample                             time: 2.86     cputime:    0.02 (0%)       t8ntime:    0.99 (34%)


--------
*** TOTAL ERRORS DETECTED: 1 errors during all test execution!
--------
info: (GeneralStateTests/stExample/add11, fork: Berlin, TrInfo: d: 0, g: 0, v: 0, TrData: ` 0x..`)