• using R Under development (unstable) (2025-06-25 r88360)
• using platform: x86_64-pc-linux-gnu
• R was compiled by     Debian clang version 19.1.7 (3+b1)     Debian flang-new version 19.1.7 (3+b1)
• running under: Debian GNU/Linux 13 (trixie)
• using session charset: UTF-8
• checking for file ‘torchopt/DESCRIPTION’ ... OK
• checking extension type ... Package
• this is package ‘torchopt’ version ‘0.1.4’
• package encoding: UTF-8
• checking CRAN incoming feasibility ... [1s/1s] NOTE Maintainer: ‘Gilberto Camara <gilberto.camara.inpe@gmail.com>’ The Description field contains   (a) 'adabelief' by Zhuang et al (2020), <arXiv:2010.07468>; (b)   'adabound' by Luo et al.(2019), <arXiv:1902.09843>; (c) 'adahessian' by   Yao et al.(2021) <arXiv:2006.00719>; (d) 'adamw' by Loshchilov & Hutter   (2019), <arXiv:1711.05101>; (e) 'madgrad' by Defazio and Jelassi   (2021), <arXiv:2101.11075>; (f) 'nadam' by Dozat (2019),   Ma and Yarats(2019), <arXiv:1810.06801>; (h) 'radam' by Liu et al.   (2019), <arXiv:1908.03265>; (i) 'swats' by Shekar and Sochee (2018),   <arXiv:1712.07628>; (j) 'yogi' by Zaheer et al.(2019), Please refer to arXiv e-prints via their arXiv DOI <doi:10.48550/arXiv.YYMM.NNNNN>.
• 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 ‘torchopt’ can be installed ... OK See the install log for details.
• 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 ... [0s/0s] OK
• checking whether the package can be loaded with stated dependencies ... [0s/0s] OK
• checking whether the package can be unloaded cleanly ... [0s/0s] OK
• checking whether the namespace can be loaded with stated dependencies ... [0s/0s] 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 ... [158s/212s] OK
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• checking for missing documentation entries ... OK
• checking for code/documentation mismatches ... OK
• checking Rd \usage sections ... OK
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• checking for unstated dependencies in examples ... OK
• checking examples ... [2s/2s] ERROR Running examples in ‘torchopt-Ex.R’ failed The error most likely occurred in: > base::assign(".ptime", proc.time(), pos = "CheckExEnv") > ### Name: optim_adabelief > ### Title: Adabelief optimizer > ### Aliases: optim_adabelief > > ### ** Examples > > if (torch::torch_is_installed()) { + # function to demonstrate optimization + beale <- function(x, y) { + log((1.5 - x + x * y)^2 + (2.25 - x - x * y^2)^2 + (2.625 - x + x * y^3)^2) + } + # define optimizer + optim <- torchopt::optim_adabelief + # define hyperparams + opt_hparams <- list(lr = 0.01) + + # starting point + x0 <- 3 + y0 <- 3 + # create tensor + x <- torch::torch_tensor(x0, requires_grad = TRUE) + y <- torch::torch_tensor(y0, requires_grad = TRUE) + # instantiate optimizer + optim <- do.call(optim, c(list(params = list(x, y)), opt_hparams)) + # run optimizer + steps <- 400 + x_steps <- numeric(steps) + y_steps <- numeric(steps) + for (i in seq_len(steps)) { + x_steps[i] <- as.numeric(x) + y_steps[i] <- as.numeric(y) + optim$zero_grad() + z <- beale(x, y) + z$backward() + optim$step() + } + print(paste0("starting value = ", beale(x0, y0))) + print(paste0("final value = ", beale(x_steps[steps], y_steps[steps]))) + } Error: .onLoad failed in loadNamespace() for 'torch', details:   call: inst_path()   error: torch cannot write into '/home/hornik/tmp/R.check/r-devel-clang/Work/build/Packages/torch/'. Execution halted
• checking for unstated dependencies in ‘tests’ ... OK
• checking tests ... [2s/2s] OK   Running ‘testthat.R’ [1s/2s]
• checking PDF version of manual ... [4s/6s] OK
• checking HTML version of manual ... [1s/1s] OK
• checking for non-standard things in the check directory ... OK
• DONE

Status: 1 ERROR, 1 NOTE