R Under development (unstable) (2023-11-13 r85520 ucrt) -- "Unsuffered Consequences"
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> if (requireNamespace("testthat", quietly = TRUE)) {
+   library("checkmate")
+   library("testthat")
+   library("mlr3")
+   test_check("mlr3")
+ }
Loading required namespace: Matrix
[ FAIL 0 | WARN 0 | SKIP 3 | PASS 12409 ]

══ Skipped tests (3) ═══════════════════════════════════════════════════════════
• On CRAN (1): 'test_Measure.R:128:3'
• On Windows (1): 'test_parallel.R:62:3'
• distr6 cannot be loaded (1): 'test_PredictionRegr.R:54:3'

[ FAIL 0 | WARN 0 | SKIP 3 | PASS 12409 ]
> 
> proc.time()
   user  system elapsed 
  81.34    3.17   93.09