buildx failed with: ERROR: failed to build: failed to solve: process "/bin/sh -c set +e\n if [ -z \"$R_TOOLCHAIN\" ] || [ \"$R_TOOLCHAIN\" = \"\" ]; then\n exit 1\n fi\n apk update && apk upgrade --no-cache --no-interactive 2>/dev/null\n apk add rustup --latest --upgrade --no-cache --no-interactive 2>/dev/null\n hash -r >/dev/null 2>&1\n rustup-init --default-toolchain \"$R_TOOLCHAIN\" --no-modify-path -y || true\n if [ -d \"/root/.rustup/toolchains\" ] && [ \"$(du -sm '/root/.rustup/toolchains' | cut -f1)\" -gt 10 ]; then\n find \"/root/.rustup/toolchains\" -type d \\( -path '*/share/bash' -o -path '*/share/doc' -o -path '*/share/fish' \\\n -o -path '*/share/man' -o -path '*/share/zsh' \\) -exec rm -rvf \"{}\" + 2>/dev/null || true\n else\n #https://gitlab.alpinelinux.org/alpine/aports/-/blob/master/community/rustup/APKBUILD#L8\n if [ \"$(uname -m)\" == \"riscv64\" ]; then\n if ! command -v cargo >/dev/null 2>&1; then \n apk add cargo --latest --upgrade --no-cache --no-interactive 2>/dev/null\n fi\n hash -r >/dev/null 2>&1\n if ! command -v cargo >/dev/null 2>&1; then \n exit 1\n fi\n else\n exit 1\n fi\n fi\n" did not complete successfully: exit code: 1