Running 'run-core.R' [0s]
  Running 'run-cpo.R' [39s]
  Running 'run-meta.R' [9s]
  Running 'run-zzzlint.R' [0s]
Running the tests in 'tests/run-cpo.R' failed.
Complete output:
  > library(testthat)
  > ISTESTING = TRUE  # nolint
  > test_check("mlrCPO", filter = "^cpo_")
  Loading required package: mlrCPO
  Loading required package: ParamHelpers
  Loading required package: mlr
  'mlr' is in maintenance mode since July 2019. Future development
  efforts will go into its successor 'mlr3' (<https://mlr3.mlr-org.com>).
  Starting 2 test processes
  -- ERROR (???): cpoApplyFunRegrTarget invert works as expected -----------------
  Error: unimplemented type '...' in 'deparse2buff'
  
  Backtrace:
       x
    1. +-mlrCPO::`internal%>>%`(...)
    2. +-mlrCPO:::`%>>%.Task`(...)
    3. | \-mlrCPO::is.nullcpo(cpo2)
    4. |   \-"NULLCPO" %in% class(x)
    5. \-mlrCPO::cpoApplyFunRegrTarget(identity, identity)
    6.   \-mlrCPO:::checkParamsFeasible(par.set, present.pars)
    7.     +-ParamHelpers::isFeasible(par.set$pars[[n]], par.vals[[n]])
    8.     \-ParamHelpers:::isFeasible.Param(par.set$pars[[n]], par.vals[[n]])
    9.       \-ParamHelpers:::constraintsOkParam(par, x)
   10.         \-ParamHelpers::isSpecialValue(par, x)
   11.           \-BBmisc::vlapply(...)
   12.             \-base::vapply(X = x, FUN = fun, ..., FUN.VALUE = NA, USE.NAMES = use.names)
   13.               \-ParamHelpers:::FUN(X[[i]], ...)
   14.                 +-base::isTRUE(all.equal(x, special.val))
   15.                 +-base::all.equal(x, special.val)
   16.                 \-base::all.equal.function(x, special.val)
   17.                   \-base::all.equal.environment(...)
   18.                     \-base::all.equal.list(...)
   19.                       +-base::all.equal(...)
   20.                       \-base::all.equal.function(...)
   21.                         \-base::all.equal.environment(...)
   22.                           \-base::all.equal.list(...)
   23.                             +-base::all.equal(...)
   24.                             \-base::all.equal.function(...)
   25.                               \-base::all.equal.language(target, current, ...)
   26.                                 +-base::paste(deparse(current), collapse = "\n")
   27.                                 \-base::deparse(current)
  
  -- ERROR (???): cpoApplyFunRegrTarget invert se with gauss quadrature works ----
  Error: argument "current" is missing, with no default
  Backtrace:
       x
    1. +-mlrCPO::`internal%>>%`(...)
    2. +-mlrCPO:::`%>>%.Task`(...)
    3. | \-mlrCPO::is.nullcpo(cpo2)
    4. |   \-"NULLCPO" %in% class(x)
    5. \-mlrCPO::cpoApplyFunRegrTarget(...)
    6.   \-mlrCPO:::checkParamsFeasible(par.set, present.pars)
    7.     +-ParamHelpers::isFeasible(par.set$pars[[n]], par.vals[[n]])
    8.     \-ParamHelpers:::isFeasible.Param(par.set$pars[[n]], par.vals[[n]])
    9.       \-ParamHelpers:::constraintsOkParam(par, x)
   10.         \-ParamHelpers::isSpecialValue(par, x)
   11.           \-BBmisc::vlapply(...)
   12.             \-base::vapply(X = x, FUN = fun, ..., FUN.VALUE = NA, USE.NAMES = use.names)
   13.               \-ParamHelpers:::FUN(X[[i]], ...)
   14.                 +-base::isTRUE(all.equal(x, special.val))
   15.                 +-base::all.equal(x, special.val)
   16.                 \-base::all.equal.function(x, special.val)
   17.                   \-base::all.equal.environment(...)
   18.                     \-base::all.equal.list(...)
   19.                       +-base::all.equal(...)
   20.                       \-base::all.equal.default(...)
   21.                         \-base::all.equal.list(target, current, ...)
  
  -- Skip (test_cpo_filter.R:5:3): filterFeatures default test -------------------
  Reason: On CRAN
  
  -- Warning (test_cpo_impute.R:140:3): CPO ImputeWrapper ------------------------
  `expect_is()` was deprecated in the 3rd edition.
  i Use `expect_type()`, `expect_s3_class()`, or `expect_s4_class()` instead
  
  -- Warning (test_cpo_impute.R:143:3): CPO ImputeWrapper ------------------------
  `expect_is()` was deprecated in the 3rd edition.
  i Use `expect_type()`, `expect_s3_class()`, or `expect_s4_class()` instead
  
  -- Skipped tests  --------------------------------------------------------------
  * On CRAN (1)
  
  == testthat results  ===========================================================
  ERROR (???): cpoApplyFunRegrTarget invert works as expected
  ERROR (???): cpoApplyFunRegrTarget invert se with gauss quadrature works
  Warning (test_cpo_impute.R:140:3): CPO ImputeWrapper
  Warning (test_cpo_impute.R:143:3): CPO ImputeWrapper
  
  [ FAIL 2 | WARN 2 | SKIP 1 | PASS 408 ]
  Error: Test failures
  Execution halted