* using log directory ‘/srv/hornik/tmp/CRAN_pretest/deepregression.Rcheck’
* using R Under development (unstable) (2024-12-01 r87410)
* using platform: x86_64-pc-linux-gnu
* R was compiled by
    Debian clang version 19.1.1 (1)
    Debian flang-new version 19.1.1 (1)
* running under: Debian GNU/Linux trixie/sid
* using session charset: UTF-8
* checking for file ‘deepregression/DESCRIPTION’ ... OK
* this is package ‘deepregression’ version ‘2.2.0’
* package encoding: UTF-8
* checking CRAN incoming feasibility ... [4s/4s] OK
* 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 ‘deepregression’ can be installed ... [9s/9s] OK
* checking package directory ... OK
* checking for future file timestamps ... 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
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* 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 ... [15s/15s] OK
* checking Rd files ... [0s/0s] NOTE
checkRd: (-1) dr_families.Rd:41: Lost braces in \itemize; meant \describe ?
checkRd: (-1) dr_families.Rd:42: Lost braces in \itemize; meant \describe ?
checkRd: (-1) dr_families.Rd:43: Lost braces in \itemize; meant \describe ?
checkRd: (-1) dr_families.Rd:44-45: Lost braces in \itemize; meant \describe ?
checkRd: (-1) dr_families.Rd:46: Lost braces in \itemize; meant \describe ?
checkRd: (-1) dr_families.Rd:47: Lost braces in \itemize; meant \describe ?
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checkRd: (-1) dr_families.Rd:51: Lost braces in \itemize; meant \describe ?
checkRd: (-1) dr_families.Rd:52-54: Lost braces in \itemize; meant \describe ?
checkRd: (-1) dr_families.Rd:55: Lost braces in \itemize; meant \describe ?
checkRd: (-1) dr_families.Rd:56: Lost braces in \itemize; meant \describe ?
checkRd: (-1) dr_families.Rd:57: Lost braces in \itemize; meant \describe ?
checkRd: (-1) dr_families.Rd:58: Lost braces in \itemize; meant \describe ?
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checkRd: (-1) dr_families.Rd:75: Lost braces in \itemize; meant \describe ?
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checkRd: (-1) dr_families.Rd:78: Lost braces in \itemize; meant \describe ?
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checkRd: (-1) tfd_mse.Rd:10-27: Lost braces
    10 | {
       | ^
checkRd: (-1) tfd_mse.Rd:47-64: Lost braces
    47 | {
       | ^
* 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 examples ... [3s/3s] ERROR
Running examples in ‘deepregression-Ex.R’ failed
The error most likely occurred in:

> base::assign(".ptime", proc.time(), pos = "CheckExEnv")
> ### Name: layer_node
> ### Title: NODE/ODTs Layer
> ### Aliases: layer_node
> 
> ### ** Examples
> 
> n <- 1000
> data_regr <- data.frame(matrix(rnorm(4 * n), c(n, 4)))
> colnames(data_regr) <- c("x0", "x1", "x2", "x3")
> y_regr <- rnorm(n) + data_regr$x0^2 + data_regr$x1 + 
+   data_regr$x2*data_regr$x3 + data_regr$x2 + data_regr$x3
>   
> library(deepregression)
> 
> formula_node <- ~ node(x1, x2, x3, x0, n_trees = 2, n_layers = 2, tree_depth = 2)
> 
> mod_node_regr <- deepregression(
+ list_of_formulas = list(loc = formula_node, scale = ~ 1),
+ data = data_regr,
+ y = y_regr
+ )
Tensorflow not available. Use install_tensorflow().
> 
> mod_node_regr %>% fit(epochs = 15, batch_size = 64, verbose = TRUE, 
+   validation_split = 0.1, early_stopping = TRUE)
Error in UseMethod("fit") : 
  no applicable method for 'fit' applied to an object of class "NULL"
Calls: %>% -> fit
Execution halted
* checking for unstated dependencies in ‘tests’ ... OK
* checking tests ... [3s/3s] OK
  Running ‘testthat.R’ [2s/2s]
* checking PDF version of manual ... [4s/4s] OK
* checking HTML version of manual ... [2s/2s] OK
* checking for non-standard things in the check directory ... OK
* checking for detritus in the temp directory ... OK
* DONE
Status: 1 ERROR, 1 NOTE