buildx failed with: ERROR: failed to solve: process "/bin/sh -c set -eux; dpkgArch=\"$(dpkg --print-architecture)\"; case \"${dpkgArch##*-}\" in amd64) rustArch=\"x86_64-unknown-linux-gnu\"; rustupSha256=${RUSTUP_SHA256_AMD64} ;; arm64) rustArch=\"aarch64-unknown-linux-gnu\"; rustupSha256=${RUSTUP_SHA256_ARM64} ;; *) echo >&2 \"unsupported architecture: ${dpkgArch}\"; exit 1 ;; esac; wget -O /usr/local/bin/rustup-init \"https://static.rust-lang.org/rustup/archive/${RUSTUP_VERSION}/${rustArch}/rustup-init\"; if [ ! -z \"${rustupSha256}\" ]; then echo \"${rustupSha256} */usr/local/bin/rustup-init\" | sha256sum -c -; else echo \"Checksum for rustup-init not verified\"; fi; chmod +x /usr/local/bin/rustup-init; rustup-init -y --no-modify-path --default-toolchain \"${RUST_VERSION}\"; rustup target add wasm32-unknown-unknown; rustup target add aarch64-unknown-linux-gnu; rustup target add x86_64-unknown-linux-gnu; chmod -R a+rw ${RUSTUP_HOME} ${CARGO_HOME}; rm /usr/local/bin/rustup-init; rustup --version; cargo --version; rustc --version;" did not complete successfully: exit code: 2