R Under development (unstable) (2024-06-26 r86840 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 [17:17:45.381] [mlr3] predict: Error from classif.debug->predict()
ERROR [17:18:06.637] [mlr3] train: Error from classif.debug->train()
ERROR [17:18:06.684] [mlr3] train: Error from classif.debug->train()
ERROR [17:18:06.754] [mlr3] train: Error from classif.debug->train()
ERROR [17:18:06.936] [mlr3] train: Error from classif.debug->train()
ERROR [17:18:06.988] [mlr3] train: Error from classif.debug->train()
ERROR [17:18:07.038] [mlr3] train: Error from classif.debug->train()
ERROR [17:18:07.316] [mlr3] train: Error from classif.debug->train()
ERROR [17:18:07.352] [mlr3] train: Error from classif.debug->train()
ERROR [17:18:07.387] [mlr3] train: Error from classif.debug->train()
WARN  [17:18:32.799] [mlr3] train: Warning from classif.debug->train()
ERROR [17:18:32.819] [mlr3] train: Error from classif.debug->train()
WARN  [17:18:32.853] [mlr3] predict: Warning from classif.debug->predict()
ERROR [17:18:32.891] [mlr3] predict: Error from classif.debug->predict()
WARN  [17:18:33.010] [mlr3] train: Warning from classif.debug->train()
WARN  [17:18:33.039] [mlr3] train: Warning from classif.debug->train()
WARN  [17:18:33.079] [mlr3] train: Warning from classif.debug->train()
WARN  [17:18:33.183] [mlr3] train: Warning from classif.debug->train()
ERROR [17:18:33.196] [mlr3] predict: Error from classif.debug->predict()
WARN  [17:18:33.221] [mlr3] train: Warning from classif.debug->train()
ERROR [17:18:33.232] [mlr3] predict: Error from classif.debug->predict()
WARN  [17:18:33.250] [mlr3] train: Warning from classif.debug->train()
ERROR [17:18:33.260] [mlr3] predict: Error from classif.debug->predict()
WARN  [17:18:33.444] [mlr3] train: Warning from classif.debug->train()
WARN  [17:18:33.495] [mlr3] train: Warning from classif.debug->train()
WARN  [17:18:33.537] [mlr3] train: Warning from classif.debug->train()
WARN  [17:18:33.669] [mlr3] train: Warning from classif.debug->train()
ERROR [17:18:33.678] [mlr3] predict: Error from classif.debug->predict()
WARN  [17:18:33.697] [mlr3] train: Warning from classif.debug->train()
ERROR [17:18:33.707] [mlr3] predict: Error from classif.debug->predict()
WARN  [17:18:33.724] [mlr3] train: Warning from classif.debug->train()
ERROR [17:18:33.734] [mlr3] predict: Error from classif.debug->predict()
ERROR [17:18:34.806] [mlr3] train: Error from classif.debug->train()
ERROR [17:18:34.958] [mlr3] predict: Error from classif.debug->predict()
ERROR [17:18:35.145] [mlr3] predict: Error from classif.debug->predict()
ERROR [17:18:35.189] [mlr3] predict: Error from classif.debug->predict()
ERROR [17:18:35.235] [mlr3] predict: Error from classif.debug->predict()
ERROR [17:19:24.736] [mlr3] train: Error from classif.debug->train()
[ FAIL 0 | WARN 0 | SKIP 5 | PASS 13241 ]

══ 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 13241 ]
> 
> proc.time()
   user  system elapsed 
 117.04    6.93  181.17