* installing *source* package 'fru' ...
** this is package 'fru' version '0.0.4'
** using staged installation
cargo 1.92.0 (344c4567c 2025-10-21)
rustc 1.92.0 (ded5c06cf 2025-12-08)
** libs
using C compiler: 'gcc.exe (GCC) 14.3.0'
gcc  -I"D:/RCompile/recent/R/include" -DNDEBUG -DSTRICT_R_HEADERS -DR_NO_REMAP    -I"d:/rtools45/x86_64-w64-mingw32.static.posix/include"      -pedantic -Wstrict-prototypes -O2 -Wall -std=gnu2x  -mfpmath=sse -msse2 -mstackrealign   -c wrapper.c -o wrapper.o
mkdir -p /.cargo
mkdir: cannot create directory '/.cargo': Permission denied
make: *** [Makevars.win:12: fru/target/release/fru.a] Error 1
ERROR: compilation failed for package 'fru'
* removing 'd:/RCompile/CRANincoming/R-devel/lib/fru'