R Under development (unstable) (2024-07-20 r86909 ucrt) -- "Unsuffered Consequences"
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Platform: x86_64-w64-mingw32/x64

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> if (requireNamespace("testthat", quietly = TRUE)) {
+   library("checkmate")
+   library("testthat")
+   library("mlr3")
+   test_check("mlr3")
+ }
Loading required namespace: Matrix
ERROR [14:47:44.929] [mlr3] predict: Error from classif.debug->predict()
ERROR [14:47:59.755] [mlr3] train: Error from classif.debug->train()
ERROR [14:47:59.790] [mlr3] train: Error from classif.debug->train()
ERROR [14:47:59.817] [mlr3] train: Error from classif.debug->train()
ERROR [14:47:59.929] [mlr3] train: Error from classif.debug->train()
ERROR [14:47:59.970] [mlr3] train: Error from classif.debug->train()
ERROR [14:48:00.008] [mlr3] train: Error from classif.debug->train()
ERROR [14:48:00.161] [mlr3] train: Error from classif.debug->train()
ERROR [14:48:00.186] [mlr3] train: Error from classif.debug->train()
ERROR [14:48:00.210] [mlr3] train: Error from classif.debug->train()
WARN  [14:48:24.189] [mlr3] train: Warning from classif.debug->train()
ERROR [14:48:24.202] [mlr3] train: Error from classif.debug->train()
WARN  [14:48:24.225] [mlr3] predict: Warning from classif.debug->predict()
ERROR [14:48:24.267] [mlr3] predict: Error from classif.debug->predict()
WARN  [14:48:24.331] [mlr3] train: Warning from classif.debug->train()
WARN  [14:48:24.348] [mlr3] train: Warning from classif.debug->train()
WARN  [14:48:24.364] [mlr3] train: Warning from classif.debug->train()
WARN  [14:48:24.407] [mlr3] train: Warning from classif.debug->train()
ERROR [14:48:24.412] [mlr3] predict: Error from classif.debug->predict()
WARN  [14:48:24.425] [mlr3] train: Warning from classif.debug->train()
ERROR [14:48:24.430] [mlr3] predict: Error from classif.debug->predict()
WARN  [14:48:24.442] [mlr3] train: Warning from classif.debug->train()
ERROR [14:48:24.447] [mlr3] predict: Error from classif.debug->predict()
WARN  [14:48:24.568] [mlr3] train: Warning from classif.debug->train()
WARN  [14:48:24.585] [mlr3] train: Warning from classif.debug->train()
WARN  [14:48:24.602] [mlr3] train: Warning from classif.debug->train()
WARN  [14:48:24.673] [mlr3] train: Warning from classif.debug->train()
ERROR [14:48:24.678] [mlr3] predict: Error from classif.debug->predict()
WARN  [14:48:24.691] [mlr3] train: Warning from classif.debug->train()
ERROR [14:48:24.696] [mlr3] predict: Error from classif.debug->predict()
WARN  [14:48:24.708] [mlr3] train: Warning from classif.debug->train()
ERROR [14:48:24.713] [mlr3] predict: Error from classif.debug->predict()
ERROR [14:48:25.666] [mlr3] train: Error from classif.debug->train()
ERROR [14:48:25.741] [mlr3] predict: Error from classif.debug->predict()
ERROR [14:48:25.820] [mlr3] predict: Error from classif.debug->predict()
ERROR [14:48:25.842] [mlr3] predict: Error from classif.debug->predict()
ERROR [14:48:25.868] [mlr3] predict: Error from classif.debug->predict()
ERROR [14:49:00.344] [mlr3] train: Error from classif.debug->train()
[ FAIL 0 | WARN 0 | SKIP 5 | PASS 13242 ]

══ Skipped tests (5) ═══════════════════════════════════════════════════════════
• On CRAN (2): 'test_Measure.R:128:3', 'test_parallel.R:91:3'
• On Windows (1): 'test_parallel.R:62:3'
• distr6 cannot be loaded (1): 'test_PredictionRegr.R:54:3'
• empty test (1): 'test_resample.R:368:1'

[ FAIL 0 | WARN 0 | SKIP 5 | PASS 13242 ]
> 
> proc.time()
   user  system elapsed 
  83.65    6.37  150.64