withr::with_output_sink("test-raceconfs.Rout", {

parameters_txt <- '
launch_method "--launch_method=" c (L-BFGS-B,SLSQP)
visit_method "--visit_method=" c (DA, DE)
global_method "--global_method=" c (CMAES,DE)
'
confs_txt <- '
launch_method visit_method global_method
L-BFGS-B    DA             CMAES
SLSQP       DA             CMAES
L-BFGS-B    DE             CMAES
SLSQP       DE             CMAES
L-BFGS-B    DA             DE
SLSQP       DA             DE
L-BFGS-B    DE             DE
SLSQP       DE             DE
'

target.runner <- function(experiment, scenario)
  return(list(cost = 100, call = toString(experiment)))

  withr::with_options(list(warning=2), {
    parameters <- readParameters(text=parameters_txt)
    initconfs <- readConfigurationsFile(text=confs_txt, parameters=parameters)
    scenario <- list(targetRunner = target.runner,
                     instances=1:10,
                     nbConfigurations=8,
                     maxExperiments = 96, logFile = "",
                     initConfigurations=initconfs,
                     parameters = parameters)
    scenario <- checkScenario (scenario)
    confs <- irace(scenario = scenario)
  })
})