R Under development (unstable) (2025-10-20 r88955 ucrt) -- "Unsuffered Consequences"
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> ## load dependencies
> library(testthat)
> 
> ## test package
> test_check('DiceKriging')
Loading required package: DiceKriging
[1] "SK  ; trend.reestim= FALSE"
[1] "SK with known nugget ; trend.reestim= FALSE"
[1] "SK  ; trend.reestim= TRUE"
[1] "SK with known nugget ; trend.reestim= TRUE"
[1] "UK  ; trend.reestim= FALSE"
[1] "UK with known nugget ; trend.reestim= FALSE"
[1] "UK  ; trend.reestim= TRUE"
[1] "UK with known nugget ; trend.reestim= TRUE"

optimisation start
------------------
* estimation method   : MLE 
* optimisation method : BFGS 
* analytical gradient : used
* trend model : ~x
* covariance model : 
  - type :  matern5_2 
  - nugget : NO
  - parameters lower bounds :  1e-10 
  - parameters upper bounds :  2 
  - best initial criterion value(s) :  2.342037 

N = 1, M = 5 machine precision = 2.22045e-16
At X0, 0 variables are exactly at the bounds
At iterate     0  f=       -2.342  |proj g|=      0.15544
At iterate     1  f =       -2.353  |proj g|=       0.61509
At iterate     2  f =      -2.3565  |proj g|=      0.088841
At iterate     3  f =      -2.3566  |proj g|=     0.0095332
At iterate     4  f =      -2.3566  |proj g|=    0.00010663
At iterate     5  f =      -2.3566  |proj g|=    1.2307e-07

iterations 5
function evaluations 7
segments explored during Cauchy searches 5
BFGS updates skipped 0
active bounds at final generalized Cauchy point 0
norm of the final projected gradient 1.23072e-07
final function value -2.3566

F = -2.3566
final  value -2.356598 
converged
[ FAIL 0 | WARN 6 | SKIP 12 | PASS 97 ]

══ Skipped tests (12) ══════════════════════════════════════════════════════════
• empty test (12): 'tests-cv.R:47:1', 'tests-cv.R:48:1', 'tests-cv.R:49:1',
  'tests-cv.R:50:1', 'tests-cv.R:63:1', 'tests-cv.R:64:1', 'tests-cv.R:65:1',
  'tests-cv.R:66:1', 'tests-cv.R:76:1', 'tests-cv.R:77:1', 'tests-cv.R:84:1',
  'tests-cv.R:85:1'

[ FAIL 0 | WARN 6 | SKIP 12 | PASS 97 ]
> 
> proc.time()
   user  system elapsed 
  13.34    1.57   14.92