buildx failed with: ERROR: failed to solve: process "/bin/sh -c set -ex; if [ \"$(getconf LONG_BIT)\" = \"32\" ]; then RUSTFLAGS='RUSTFLAGS=-Ccodegen-units=16'; fi; if [ \"${RUST_RELEASE_MODE}\" = \"release\" ]; then cargo clean --release; RUST_BACKTRACE=full ${RUSTFLAGS} cargo build --features \"${CARGO_BUILD_FEATURES}\" --release; mv target/\"${RUST_RELEASE_MODE}\"/lemmy_server ./lemmy_server; if [ \"$(getconf LONG_BIT)\" = \"64\" ]; then wget https://github.com/upx/upx/releases/download/v4.2.4/upx-4.2.4-${TARGETARCH}_linux.tar.xz; tar -xvf upx-4.2.4-${TARGETARCH}_linux.tar.xz; cp upx-4.2.4-${TARGETARCH}_linux/upx /usr/bin; upx --best --lzma /home/lemmy/lemmy_server; fi; fi" did not complete successfully: exit code: 127