R Under development (unstable) (2024-10-15 r87238 ucrt) -- "Unsuffered Consequences"
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> if (requireNamespace("testthat", quietly = TRUE)) {
+   library(testthat)
+   library(mlr3mbo)
+   test_check("mlr3mbo")
+ }
Loading required namespace: mlr3learners
Loading required namespace: DiceKriging
Loading required namespace: rgenoud
Loading required package: mlr3
WARN  [19:12:39.077] [bbotk] Optimizer Error.
WARN  [19:12:58.417] [bbotk] Less then `n_select` (1) candidate points found during acquisition function optimization were not already evaluated.
WARN  [19:13:37.090] [bbotk] Task 'surrogate_task' has missing values in column(s) 'y_scal', but learner 'regr.km' does not support this
WARN  [19:13:37.092] [bbotk] Could not update the surrogate a final time after the optimization process has terminated.
WARN  [19:14:17.146] [bbotk] Task 'surrogate_task' has missing values in column(s) 'y_scal', but learner 'regr.km' does not support this
WARN  [19:14:17.149] [bbotk] Could not update the surrogate a final time after the optimization process has terminated.
WARN  [19:14:51.291] [bbotk] Surrogate Train Error.
WARN  [19:14:58.323] [bbotk] Current insample performance of the Surrogate Model does not meet the performance threshold.
WARN  [19:15:02.636] [bbotk] Surrogate Train Error.
WARN  [19:15:14.905] [bbotk] Current insample performance of the Surrogate Model does not meet the performance threshold.
WARN  [19:15:49.104] [bbotk] Current insample performance of the Surrogate Model does not meet the performance threshold.
WARN  [19:15:51.813] [bbotk] Optimizer Error.
WARN  [19:15:52.171] [bbotk] Surrogate Train Error.
WARN  [19:15:52.704] [bbotk] Surrogate Predict Error.
ERROR [19:16:30.705] [mlr3] train: Surrogate Train Error.
[ FAIL 0 | WARN 0 | SKIP 4 | PASS 1043 ]

══ Skipped tests (4) ═══════════════════════════════════════════════════════════
• On CRAN (4): 'test_AcqFunctionEHVIGH.R:35:3', 'test_OptimizerMbo.R:2:3',
  'test_ResultAssignerSurrogate.R:16:3', 'test_TunerMbo.R:2:3'

[ FAIL 0 | WARN 0 | SKIP 4 | PASS 1043 ]
> 
> proc.time()
   user  system elapsed 
 115.31    5.73  290.68