* installing *source* package ‘fru’ ...
** this is package ‘fru’ version ‘0.0.3’
** package ‘fru’ successfully unpacked and MD5 sums checked
** using staged installation
cargo 1.84.1 (66221abde 2024-11-19)
rustc 1.84.1 (e71f9a9a9 2025-01-27)
** libs
using C compiler: ‘Apple clang version 14.0.3 (clang-1403.0.22.14.1)’
using SDK: ‘MacOSX11.3.sdk’
clang -arch x86_64 -I"/Library/Frameworks/R.framework/Resources/include" -DNDEBUG -DSTRICT_R_HEADERS -DR_NO_REMAP  -I/opt/R/x86_64/include    -fPIC  -falign-functions=64 -Wall -g -O2  -c wrapper.c -o wrapper.o
mkdir -p /Volumes/Builds/packages/big-sur-x86_64/results/4.5/fru.Rcheck/00_pkg_src/fru/src/.cargo
PATH="/opt/gfortran/bin:/opt/R/x86_64/bin:/Library/TeX/texbin:/usr/texbin:/opt/R/x86_64/gfortran/bin:/usr/local/bin:/usr/local/gfortran/bin:/usr/local/teTeX/bin/x86_64-apple-darwin-current:/Library/Frameworks/R.framework/Resources/bin:/opt/gfortran/bin:/opt/R/x86_64/bin:/usr/local/bin:/System/Cryptexes/App/usr/bin:/usr/bin:/bin:/usr/sbin:/sbin:/Library/TeX/texbin:/usr/local/go/bin:/opt/X11/bin:/Library/Apple/usr/bin:/var/run/com.apple.security.cryptexd/codex.system/bootstrap/usr/local/bin:/var/run/com.apple.security.cryptexd/codex.system/bootstrap/usr/bin:/var/run/com.apple.security.cryptexd/codex.system/bootstrap/usr/appleinternal/bin:/Users/urbanek/.cargo/bin" cargo build --offline --release -j 2 --manifest-path=fru/Cargo.toml
error: failed to parse manifest at `/Volumes/Builds/packages/big-sur-x86_64/results/4.5/fru.Rcheck/00_pkg_src/fru/src/fru/Cargo.toml`

Caused by:
  feature `edition2024` is required

  The package requires the Cargo feature called `edition2024`, but that feature is not stabilized in this version of Cargo (1.84.1 (66221abde 2024-11-19)).
  Consider trying a newer version of Cargo (this may require the nightly release).
  See https://doc.rust-lang.org/nightly/cargo/reference/unstable.html#edition-2024 for more information about the status of this feature.
make: *** [fru/target/release/fru.a] Error 101
make: *** Waiting for unfinished jobs....
ERROR: compilation failed for package ‘fru’
* removing ‘/Volumes/Builds/packages/big-sur-x86_64/results/4.5/fru.Rcheck/fru’