Running 'testthat.R'
Running the tests in 'tests/testthat.R' failed.
Complete output:
  > library(testthat)
  > library(mlr3viz)
  > 
  > test_check("mlr3viz")
  Starting 2 test processes
  ══ Failed tests ════════════════════════════════════════════════════════════════
  ── Error (test_Filter.R:8:3): autoplot.Filter ──────────────────────────────────
  Error: there is no package called 'vdiffr'
  Backtrace:
      █
   1. └─base::loadNamespace(x)
   2.   └─base::withRestarts(stop(cond), retry_loadNamespace = function() NULL)
   3.     └─base:::withOneRestart(expr, restarts[[1L]])
   4.       └─base:::doWithOneRestart(return(expr), restart)
  ── Error (test_BenchmarkResult.R:18:3): autoplot BenchmarkResult ───────────────
  Error: there is no package called 'vdiffr'
  Backtrace:
      █
   1. └─base::loadNamespace(x)
   2.   └─base::withRestarts(stop(cond), retry_loadNamespace = function() NULL)
   3.     └─base:::withOneRestart(expr, restarts[[1L]])
   4.       └─base:::doWithOneRestart(return(expr), restart)
  ── Error (test_BenchmarkResult.R:47:3): holdout roc plot (#54) ─────────────────
  Error: there is no package called 'vdiffr'
  Backtrace:
      █
   1. └─base::loadNamespace(x)
   2.   └─base::withRestarts(stop(cond), retry_loadNamespace = function() NULL)
   3.     └─base:::withOneRestart(expr, restarts[[1L]])
   4.       └─base:::doWithOneRestart(return(expr), restart)
  ── Error (test_LearnerClassifCVGlmnet.R:12:3): autoplot.LearnerClassifCVGlmnet ──
  Error: there is no package called 'vdiffr'
  Backtrace:
      █
   1. └─base::loadNamespace(x)
   2.   └─base::withRestarts(stop(cond), retry_loadNamespace = function() NULL)
   3.     └─base:::withOneRestart(expr, restarts[[1L]])
   4.       └─base:::doWithOneRestart(return(expr), restart)
  ── Error (test_LearnerClassifRpart.R:9:3): autoplot.LearnerClassifRpart ────────
  Error: there is no package called 'vdiffr'
  Backtrace:
      █
   1. └─base::loadNamespace(x)
   2.   └─base::withRestarts(stop(cond), retry_loadNamespace = function() NULL)
   3.     └─base:::withOneRestart(expr, restarts[[1L]])
   4.       └─base:::doWithOneRestart(return(expr), restart)
  ── Error (test_LearnerClasssifGlmnet.R:12:3): autoplot.LearnerClassifGlmnet ────
  Error: there is no package called 'vdiffr'
  Backtrace:
      █
   1. └─base::loadNamespace(x)
   2.   └─base::withRestarts(stop(cond), retry_loadNamespace = function() NULL)
   3.     └─base:::withOneRestart(expr, restarts[[1L]])
   4.       └─base:::doWithOneRestart(return(expr), restart)
  ── Error (test_LearnerRegrCVGlmnet.R:12:3): autoplot.LearnerRegrGlmnet ─────────
  Error: there is no package called 'vdiffr'
  Backtrace:
      █
   1. └─base::loadNamespace(x)
   2.   └─base::withRestarts(stop(cond), retry_loadNamespace = function() NULL)
   3.     └─base:::withOneRestart(expr, restarts[[1L]])
   4.       └─base:::doWithOneRestart(return(expr), restart)
  ── Error (test_LearnerClustHierarchical.R:11:3): autoplot.LearnerClustHierarchical ──
  Error: there is no package called 'vdiffr'
  Backtrace:
      █
   1. └─base::loadNamespace(x)
   2.   └─base::withRestarts(stop(cond), retry_loadNamespace = function() NULL)
   3.     └─base:::withOneRestart(expr, restarts[[1L]])
   4.       └─base:::doWithOneRestart(return(expr), restart)
  ── Error (test_LearnerRegrGlmnet.R:11:3): autoplot.LearnerRegrGlmnet ───────────
  Error: there is no package called 'vdiffr'
  Backtrace:
      █
   1. └─base::loadNamespace(x)
   2.   └─base::withRestarts(stop(cond), retry_loadNamespace = function() NULL)
   3.     └─base:::withOneRestart(expr, restarts[[1L]])
   4.       └─base:::doWithOneRestart(return(expr), restart)
  ── Error (test_PredictionClassif.R:9:3): autoplot.PredictionClassif ────────────
  Error: there is no package called 'vdiffr'
  Backtrace:
      █
   1. └─base::loadNamespace(x)
   2.   └─base::withRestarts(stop(cond), retry_loadNamespace = function() NULL)
   3.     └─base:::withOneRestart(expr, restarts[[1L]])
   4.       └─base:::doWithOneRestart(return(expr), restart)
  ── Error (test_LearnerRegrRpart.R:9:3): autoplot.LearnerRegrRpart ──────────────
  Error: there is no package called 'vdiffr'
  Backtrace:
      █
   1. └─base::loadNamespace(x)
   2.   └─base::withRestarts(stop(cond), retry_loadNamespace = function() NULL)
   3.     └─base:::withOneRestart(expr, restarts[[1L]])
   4.       └─base:::doWithOneRestart(return(expr), restart)
  ── Error (test_PredictionRegr.R:8:3): autoplot.PredictionRegr ──────────────────
  Error: there is no package called 'vdiffr'
  Backtrace:
      █
   1. └─base::loadNamespace(x)
   2.   └─base::withRestarts(stop(cond), retry_loadNamespace = function() NULL)
   3.     └─base:::withOneRestart(expr, restarts[[1L]])
   4.       └─base:::doWithOneRestart(return(expr), restart)
  ── Error (test_PredictionClust.R:14:3): autoplot.PredictionClust ───────────────
  Error: there is no package called 'vdiffr'
  Backtrace:
      █
   1. └─base::loadNamespace(x)
   2.   └─base::withRestarts(stop(cond), retry_loadNamespace = function() NULL)
   3.     └─base:::withOneRestart(expr, restarts[[1L]])
   4.       └─base:::doWithOneRestart(return(expr), restart)
  ── Error (test_PredictionSurv.R:11:3): autoplot.PredictionSurv ─────────────────
  Error: there is no package called 'vdiffr'
  Backtrace:
      █
   1. └─base::loadNamespace(x)
   2.   └─base::withRestarts(stop(cond), retry_loadNamespace = function() NULL)
   3.     └─base:::withOneRestart(expr, restarts[[1L]])
   4.       └─base:::doWithOneRestart(return(expr), restart)
  ── Error (test_TaskClassif.R:6:3): autoplot.TaskClassif ────────────────────────
  Error: there is no package called 'vdiffr'
  Backtrace:
      █
   1. └─base::loadNamespace(x)
   2.   └─base::withRestarts(stop(cond), retry_loadNamespace = function() NULL)
   3.     └─base:::withOneRestart(expr, restarts[[1L]])
   4.       └─base:::doWithOneRestart(return(expr), restart)
  ── Error (test_TaskClust.R:7:3): autoplot.TaskClust ────────────────────────────
  Error: there is no package called 'vdiffr'
  Backtrace:
      █
   1. └─base::loadNamespace(x)
   2.   └─base::withRestarts(stop(cond), retry_loadNamespace = function() NULL)
   3.     └─base:::withOneRestart(expr, restarts[[1L]])
   4.       └─base:::doWithOneRestart(return(expr), restart)
  ── Error (test_TaskDens.R:8:3): autoplot.TaskDens ──────────────────────────────
  Error: there is no package called 'vdiffr'
  Backtrace:
      █
   1. └─base::loadNamespace(x)
   2.   └─base::withRestarts(stop(cond), retry_loadNamespace = function() NULL)
   3.     └─base:::withOneRestart(expr, restarts[[1L]])
   4.       └─base:::doWithOneRestart(return(expr), restart)
  ── Error (test_TaskRegr.R:6:3): autoplot.TaskRegr ──────────────────────────────
  Error: there is no package called 'vdiffr'
  Backtrace:
      █
   1. └─base::loadNamespace(x)
   2.   └─base::withRestarts(stop(cond), retry_loadNamespace = function() NULL)
   3.     └─base:::withOneRestart(expr, restarts[[1L]])
   4.       └─base:::doWithOneRestart(return(expr), restart)
  ── Error (test_TuningInstanceSingleCrit.R:48:3): autoplot.TuningInstanceSingleCrit ──
  Error: there is no package called 'vdiffr'
  Backtrace:
      █
   1. ├─mlr3viz:::expect_multiple("marginal", p)
   2. └─base::loadNamespace(x)
   3.   └─base::withRestarts(stop(cond), retry_loadNamespace = function() NULL)
   4.     └─base:::withOneRestart(expr, restarts[[1L]])
   5.       └─base:::doWithOneRestart(return(expr), restart)
  ── Error (test_plot_learner_prediction.R:8:3): plot_learner_prediction.LearnerClassif ──
  Error: there is no package called 'vdiffr'
  Backtrace:
      █
   1. └─base::loadNamespace(x)
   2.   └─base::withRestarts(stop(cond), retry_loadNamespace = function() NULL)
   3.     └─base:::withOneRestart(expr, restarts[[1L]])
   4.       └─base:::doWithOneRestart(return(expr), restart)
  ── Error (test_plot_learner_prediction.R:41:3): plot_learner_prediction.LearnerRegr 2d ──
  Error: there is no package called 'vdiffr'
  Backtrace:
      █
   1. └─base::loadNamespace(x)
   2.   └─base::withRestarts(stop(cond), retry_loadNamespace = function() NULL)
   3.     └─base:::withOneRestart(expr, restarts[[1L]])
   4.       └─base:::doWithOneRestart(return(expr), restart)
  ── Error (test_plot_learner_prediction.R:51:3): plot_learner_prediction.LearnerRegr 1d ──
  Error: there is no package called 'vdiffr'
  Backtrace:
      █
   1. └─base::loadNamespace(x)
   2.   └─base::withRestarts(stop(cond), retry_loadNamespace = function() NULL)
   3.     └─base:::withOneRestart(expr, restarts[[1L]])
   4.       └─base:::doWithOneRestart(return(expr), restart)
  ── Error (test_ResampleResult.R:19:3): autoplot ResampleResult ─────────────────
  Error: there is no package called 'vdiffr'
  Backtrace:
      █
   1. └─base::loadNamespace(x)
   2.   └─base::withRestarts(stop(cond), retry_loadNamespace = function() NULL)
   3.     └─base:::withOneRestart(expr, restarts[[1L]])
   4.       └─base:::doWithOneRestart(return(expr), restart)
  
  [ FAIL 23 | WARN 1 | SKIP 0 | PASS 88 ]
  Error: Test failures
  Execution halted