* installing *source* package ‘orbweaver’ ...
** using staged installation
** libs
using C compiler: ‘Debian clang version 18.1.6 (1)’
rm -Rf orbweaver.so ./rust/target/release/liborbweaver.a entrypoint.o /srv/hornik/tmp/CRAN/orbweaver.Rcheck/00_pkg_src/orbweaver/src/.cargo /srv/hornik/tmp/CRAN/orbweaver.Rcheck/00_pkg_src/orbweaver/src/vendor
clang-18  -I"/home/hornik/tmp/R/include" -DNDEBUG   -I/usr/local/include -DUSE_TYPE_CHECKING_STRICT -D_FORTIFY_SOURCE=3   -fpic  -g -O3 -Wall -pedantic -c entrypoint.c -o entrypoint.o
if [ -f ./rust/vendor.tar.xz ]; then \
	tar xf rust/vendor.tar.xz && \
	mkdir -p /srv/hornik/tmp/CRAN/orbweaver.Rcheck/00_pkg_src/orbweaver/src/.cargo && \
	cp rust/vendor-config.toml /srv/hornik/tmp/CRAN/orbweaver.Rcheck/00_pkg_src/orbweaver/src/.cargo/config.toml; \
fi
# In some environments, ~/.cargo/bin might not be included in PATH, so we need
# to set it here to ensure cargo can be invoked. It is appended to PATH and
# therefore is only used if cargo is absent from the user's PATH.
if [ "" != "true" ]; then \
	export CARGO_HOME=/srv/hornik/tmp/CRAN/orbweaver.Rcheck/00_pkg_src/orbweaver/src/.cargo; \
fi && \
	export PATH="/srv/hornik/tmp/CRAN/orbweaver.Rcheck/R_check_bin:/usr/local/bin:/usr/bin:/bin:/home/hornik/.cargo/bin" && \
		cargo +stable build -j 2 --offline --lib --release --manifest-path=./rust/Cargo.toml --target-dir ./rust/target && \
		echo `cargo --version` && echo `rustc --version`;
error: no such command: `+stable`

	Cargo does not handle `+toolchain` directives.
	Did you mean to invoke `cargo` through `rustup` instead?
make: *** [Makevars:19: rust/target/release/liborbweaver.a] Error 101
ERROR: compilation failed for package ‘orbweaver’
* removing ‘/srv/hornik/tmp/CRAN/orbweaver.Rcheck/orbweaver’