* using log directory ‘/srv/hornik/tmp/CRAN_pretest/NNMoMo.Rcheck’
* using R Under development (unstable) (2025-10-16 r88927)
* using platform: x86_64-pc-linux-gnu
* R was compiled by
    Debian clang version 19.1.7 (7)
    Debian flang-new version 19.1.7 (7)
* running under: Debian GNU/Linux forky/sid
* using session charset: UTF-8
* checking for file ‘NNMoMo/DESCRIPTION’ ... OK
* checking extension type ... Package
* this is package ‘NNMoMo’ version ‘0.1.0’
* package encoding: UTF-8
* checking CRAN incoming feasibility ... [3s/3s] NOTE
Maintainer: ‘Daniel Herzog <studium.daniel.herzog@gmail.com>’

New submission

Possibly misspelled words in DESCRIPTION:
  StMoMo (3:36, 7:41, 7:352)
  demogdata (7:214)

No Authors@R field in DESCRIPTION.
Please add one, modifying
  Authors@R: person(given = "Daniel",
                    family = "Herzog",
                    role = c("aut", "cre"),
                    email = "studium.daniel.herzog@gmail.com")
as necessary.
* checking package namespace information ... OK
* checking package dependencies ... OK
* checking if this is a source package ... OK
* checking if there is a namespace ... OK
* checking for executable files ... OK
* checking for hidden files and directories ... OK
* checking for portable file names ... OK
* checking for sufficient/correct file permissions ... OK
* checking whether package ‘NNMoMo’ can be installed ... [8s/8s] OK
* checking package directory ... OK
* checking for future file timestamps ... OK
* checking ‘build’ directory ... OK
* checking DESCRIPTION meta-information ... OK
* checking top-level files ... OK
* checking for left-over files ... OK
* checking index information ... OK
* checking package subdirectories ... OK
* checking code files for non-ASCII characters ... OK
* checking R files for syntax errors ... OK
* checking whether the package can be loaded ... [2s/2s] OK
* checking whether the package can be loaded with stated dependencies ... [2s/2s] OK
* checking whether the package can be unloaded cleanly ... [2s/2s] OK
* checking whether the namespace can be loaded with stated dependencies ... [2s/2s] OK
* checking whether the namespace can be unloaded cleanly ... [2s/2s] OK
* checking loading without being on the library search path ... [2s/2s] OK
* checking use of S3 registration ... OK
* checking dependencies in R code ... OK
* checking S3 generic/method consistency ... OK
* checking replacement functions ... OK
* checking foreign function calls ... OK
* checking R code for possible problems ... [10s/10s] OK
* checking Rd files ... [0s/0s] OK
* checking Rd metadata ... OK
* checking Rd line widths ... OK
* checking Rd cross-references ... OK
* checking for missing documentation entries ... OK
* checking for code/documentation mismatches ... OK
* checking Rd \usage sections ... OK
* checking Rd contents ... OK
* checking for unstated dependencies in examples ... OK
* checking contents of ‘data’ directory ... OK
* checking data for non-ASCII characters ... [0s/0s] OK
* checking LazyData ... OK
* checking data for ASCII and uncompressed saves ... OK
* checking installed files from ‘inst/doc’ ... OK
* checking files in ‘vignettes’ ... OK
* checking examples ... [4s/4s] ERROR
Running examples in ‘NNMoMo-Ex.R’ failed
The error most likely occurred in:

> base::assign(".ptime", proc.time(), pos = "CheckExEnv")
> ### Name: fit.NNMoMo
> ### Title: Fit a Neural Network Lee-Carter Model
> ### Aliases: fit.NNMoMo
> 
> ### ** Examples
> 
> # Example: fitting with random data, do not expect to get
> # any meaningful results.
> 
> # creating example data for fitting:
> demography_obj <- demography::demogdata(
+   data = matrix(runif(10*5), nrow = 10),
+   pop = matrix(runif(10*5, 1000, 2000), nrow = 10),
+   ages = 50:59,
+   years = 2000:2004,
+   type = "mortality",
+   name = "male",
+   label = "France"
+ )
> nn_data <- NNMoMoData(demography_obj)
> 
> # fitting the data in 10 epochs (in practice, many more epochs are needed):
> fit <- fit(object = lcNN(),
+            data = nn_data,
+            fitting.epochs = 10)
Error in torch_tensor_cpp(data, dtype, device, requires_grad, pin_memory) : 
  Lantern is not loaded. Please use `install_torch()` to install additional dependencies.
Calls: fit ... <Anonymous> -> <Anonymous> -> <Anonymous> -> torch_tensor_cpp
Execution halted
* checking for unstated dependencies in ‘tests’ ... OK
* checking tests ... [3s/3s] OK
  Running ‘testthat.R’ [3s/3s]
* checking for unstated dependencies in vignettes ... OK
* checking package vignettes ... OK
* checking re-building of vignette outputs ... [4s/4s] ERROR
Error(s) in re-building vignettes:
  ...
--- re-building ‘NNMoMoVignette.Rmd’ using rmarkdown

Quitting from NNMoMoVignette.Rmd:70-82 [fitting]
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
<error/rlang_error>
Error in `torch_tensor_cpp()`:
! Lantern is not loaded. Please use `install_torch()` to install additional dependencies.
---
Backtrace:
    ▆
 1. ├─StMoMo::fit(...)
 2. └─NNMoMo:::fit.NNMoMo(...)
 3.   └─torch (local) initialize_torch_dataset(data, object$loss_type)
 4.     └─d$new(df = df, loss_type = loss_type)
 5.       └─NNMoMo (local) initialize(...)
 6.         └─torch::torch_tensor(as.matrix(df[, rate_cols]))
 7.           └─Tensor$new(data, dtype, device, requires_grad, pin_memory)
 8.             └─methods$initialize(NULL, NULL, ...)
 9.               └─torch:::torch_tensor_cpp(...)
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

Error: processing vignette 'NNMoMoVignette.Rmd' failed with diagnostics:
Lantern is not loaded. Please use `install_torch()` to install additional dependencies.
--- failed re-building ‘NNMoMoVignette.Rmd’

SUMMARY: processing the following file failed:
  ‘NNMoMoVignette.Rmd’

Error: Vignette re-building failed.
Execution halted

* checking PDF version of manual ... [3s/3s] OK
* checking HTML version of manual ... [0s/0s] OK
* checking for non-standard things in the check directory ... OK
* checking for detritus in the temp directory ... OK
* DONE
Status: 2 ERRORs, 1 NOTE