R Under development (unstable) (2024-06-25 r86831 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 [16:47:45.324] [mlr3] predict: Error from classif.debug->predict()
ERROR [16:48:12.983] [mlr3] train: Error from classif.debug->train()
ERROR [16:48:13.064] [mlr3] train: Error from classif.debug->train()
ERROR [16:48:13.143] [mlr3] train: Error from classif.debug->train()
ERROR [16:48:13.379] [mlr3] train: Error from classif.debug->train()
ERROR [16:48:13.426] [mlr3] train: Error from classif.debug->train()
ERROR [16:48:13.469] [mlr3] train: Error from classif.debug->train()
ERROR [16:48:13.747] [mlr3] train: Error from classif.debug->train()
ERROR [16:48:13.801] [mlr3] train: Error from classif.debug->train()
ERROR [16:48:13.855] [mlr3] train: Error from classif.debug->train()
WARN  [16:48:49.507] [mlr3] train: Warning from classif.debug->train()
ERROR [16:48:49.534] [mlr3] train: Error from classif.debug->train()
WARN  [16:48:49.579] [mlr3] predict: Warning from classif.debug->predict()
ERROR [16:48:49.630] [mlr3] predict: Error from classif.debug->predict()
WARN  [16:48:49.744] [mlr3] train: Warning from classif.debug->train()
WARN  [16:48:49.776] [mlr3] train: Warning from classif.debug->train()
WARN  [16:48:49.825] [mlr3] train: Warning from classif.debug->train()
WARN  [16:48:49.937] [mlr3] train: Warning from classif.debug->train()
ERROR [16:48:49.950] [mlr3] predict: Error from classif.debug->predict()
WARN  [16:48:49.975] [mlr3] train: Warning from classif.debug->train()
ERROR [16:48:49.986] [mlr3] predict: Error from classif.debug->predict()
WARN  [16:48:50.009] [mlr3] train: Warning from classif.debug->train()
ERROR [16:48:50.022] [mlr3] predict: Error from classif.debug->predict()
WARN  [16:48:50.257] [mlr3] train: Warning from classif.debug->train()
WARN  [16:48:50.321] [mlr3] train: Warning from classif.debug->train()
WARN  [16:48:50.369] [mlr3] train: Warning from classif.debug->train()
WARN  [16:48:50.533] [mlr3] train: Warning from classif.debug->train()
ERROR [16:48:50.543] [mlr3] predict: Error from classif.debug->predict()
WARN  [16:48:50.561] [mlr3] train: Warning from classif.debug->train()
ERROR [16:48:50.570] [mlr3] predict: Error from classif.debug->predict()
WARN  [16:48:50.589] [mlr3] train: Warning from classif.debug->train()
ERROR [16:48:50.606] [mlr3] predict: Error from classif.debug->predict()
ERROR [16:48:51.907] [mlr3] train: Error from classif.debug->train()
ERROR [16:48:52.108] [mlr3] predict: Error from classif.debug->predict()
ERROR [16:48:52.321] [mlr3] predict: Error from classif.debug->predict()
ERROR [16:48:52.379] [mlr3] predict: Error from classif.debug->predict()
ERROR [16:48:52.441] [mlr3] predict: Error from classif.debug->predict()
ERROR [16:49:57.017] [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 
 148.12   12.70  247.95