buildx failed with: ERROR: failed to solve: process "/bin/bash -o pipefail -c echo \"Triggering Rust install for channel '${RUST_CHANNEL}' and rustc-hash '${RUSTC_HASH}'.\" && curl --retry 3 --proto '=https' --tlsv1.2 -sqSf https://sh.rustup.rs | sh -s -- -y --profile minimal --component rustfmt clippy --default-toolchain \"${RUST_CHANNEL}\" --target \"${RUST_MUSL_CROSS_TARGET}\" && rustup set profile minimal && find \"${RUSTUP_HOME}/toolchains/${RUST_CHANNEL}-$(uname -m)-unknown-linux-gnu/share/\" -type f -exec truncate -s0 {} \\; && if [[ \"${RUST_CHANNEL}\" == \"stable\" ]] ; then STABLE_VER=$(rustc -V | grep -oE \"[[:digit:]]+\\.[[:digit:]]+\\.[[:digit:]]\") ; ln -vfsr \"${RUSTUP_HOME}/toolchains/stable-$(uname -m)-unknown-linux-gnu\" \"${RUSTUP_HOME}/toolchains/${STABLE_VER}-$(uname -m)-unknown-linux-gnu\" ; fi && echo -ne \"\" \"[build]\\n\" \"target = \\\"${RUST_MUSL_CROSS_TARGET}\\\"\\n\" \"rustflags = [\\\"-Ctarget-feature=+crt-static\\\", \\\"-Clink-self-contained=yes\\\", \\\"-Cprefer-dynamic=no\\\", \\\"-L/${TARGET_PREFIX}/lib\\\", \\\"-L${SYSROOT}/lib\\\"]\\n\" \"\\n\" \"[target.${RUST_MUSL_CROSS_TARGET}]\\n\" \"linker = \\\"${RUST_MUSL_CROSS_TARGET}-ld\\\"\\n\" \"\\n\" > \"${CARGO_HOME}/config.toml\" && ln -sfnr \"${TARGET_PREFIX}/bin/${TARGET}-strip\" \"${TARGET_PREFIX}/bin/musl-strip\" && ln -sfnr \"${CARGO_HOME}\" /root/.cargo && ln -sfnr \"${RUSTUP_HOME}\" /root/.rustup" did not complete successfully: exit code: 1