• using R Under development (unstable) (2025-12-23 r89222 ucrt)
• using platform: x86_64-w64-mingw32
• R was compiled by     gcc.exe (GCC) 14.3.0     GNU Fortran (GCC) 14.3.0
• running under: Windows Server 2022 x64 (build 20348)
• using session charset: UTF-8
• checking for file 'marginaleffects/DESCRIPTION' ... OK
• this is package 'marginaleffects' version '0.31.0'
• package encoding: UTF-8
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• checking whether package 'marginaleffects' can be installed ... OK See the install log for details.
• checking installed package size ... OK
• checking package directory ... OK
• checking 'build' directory ... OK
• checking DESCRIPTION meta-information ... OK
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• checking R files for syntax errors ... OK
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• checking examples ... [1s] ERROR Running examples in 'marginaleffects-Ex.R' failed The error most likely occurred in: > ### Name: datagrid > ### Title: Data grids > ### Aliases: datagrid > > ### ** Examples > > # The output only has 2 rows, and all the variables except `hp` are at their > # mean or mode. > datagrid(newdata = mtcars, hp = c(100, 110))   rowid mpg cyl disp drat wt qsec vs am gear carb hp 1 1 20.09062 6 230.7219 3.596563 3.21725 17.84875 0 0 4 3 100 2 2 20.09062 6 230.7219 3.596563 3.21725 17.84875 0 0 4 3 110 > > # We get the same result by feeding a model instead of a data.frame > mod <- lm(mpg ~ hp, mtcars) > datagrid(model = mod, hp = c(100, 110))   rowid mpg hp 1 1 20.09062 100 2 2 20.09062 110 > > # Use in `marginaleffects` to compute "Typical Marginal Effects". When used > # in `slopes()` or `predictions()` we do not need to specify the > # `model` or `newdata` arguments. > slopes(mod, newdata = datagrid(hp = c(100, 110))) Error in `[.data.table`(out, , `:=`(tmp_idx, seq_len(.N)), by = tmp) :   attempt access index 10/10 in VECTOR_ELT Calls: slopes ... <Anonymous> -> do.call -> get_comparisons -> [ -> [.data.table Execution halted
• checking for unstated dependencies in 'tests' ... OK
• checking tests ... [1s] OK   Running 'spelling.R' [0s]   Running 'tinytest.R' [0s]
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• checking re-building of vignette outputs ... [2s] OK
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• DONE

Status: 1 ERROR