[R-package] CRAN error: r-devel-linux-x86_64-debian-clang #5502
Description
Description
CRAN checks for {lightgbm} are showing an ERROR for the r-devel-linux-x86_64-debian-clang check flavor.
https://cran.r-project.org/web/checks/check_results_lightgbm.html
Reproducible example
I haven't tried to reproduce this yet outside of the CRAN system.
According to CRAN's logs (link), exactly one test is failing.
== Failed ======================================================================
-- 1. Failure (test_basic.R:1276:5): lgb.train() supports non-ASCII feature name
dumped_model[["feature_names"]] not identical to iconv(feature_names, to = "UTF-8").
4/4 mismatches
x[1]: "F_é\u009b¶"
y[1]: "F_<U+96F6>"
x[2]: "F_äž\u0080"
y[2]: "F_<U+4E00>"
x[3]: "F_äº\u008c"
y[3]: "F_<U+4E8C>"
x[4]: "F_äž\u0089"
y[4]: "F_<U+4E09>"
== DONE ========================================================================
Error: Test failures
Execution halted
Additional Comments
This project has a CI job (#4164) that is intended to exactly replicate CRAN's r-devel-linux-x86_64-debian-clang check. That job has been succeeding. I'm not sure yet what the difference is between that job and CRAN's setup.