COPY scripts/cmake.sh /scripts/
RUN /scripts/cmake.sh
-ENV RUST_CONFIGURE_ARGS --build=x86_64-unknown-linux-gnu --set rust.ignore-git=false
+ENV RUST_CONFIGURE_ARGS --build=x86_64-unknown-linux-gnu --set rust.ignore-git=false \
+ --set llvm.allow-old-toolchain
ENV SCRIPT python3 ../x.py --stage 2 test distcheck
ENV DIST_SRC 1