R Under development (unstable) (2025-05-16 r88213 ucrt) -- "Unsuffered Consequences"
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> if (requireNamespace("testthat", quietly = TRUE)) {
+   library("testthat")
+   library("mlr3learners")
+   test_check("mlr3learners")
+ }
Loading required package: mlr3
[ FAIL 0 | WARN 0 | SKIP 4 | PASS 479 ]

══ Skipped tests (4) ═══════════════════════════════════════════════════════════
• On CRAN (4): 'test_classif_nnet.R:2:1', 'test_classif_xgboost.R:2:1',
  'test_regr_nnet.R:2:1', 'test_regr_xgboost.R:2:1'

[ FAIL 0 | WARN 0 | SKIP 4 | PASS 479 ]
> 
> proc.time()
   user  system elapsed 
  45.35    2.79   48.35