buildx failed with: ERROR: failed to solve: process "/bin/sh -c useradd --uid 1001 --create-home --shell /bin/bash buildmaster && mkdir /home/buildmaster/dfhack-native && cd /home/buildmaster/dfhack-native && git clone --depth=1 --recursive https://github.com/DFHack/dfhack.git && cmake dfhack -G Ninja -DDFHACK_BUILD_ARCH=64 -DBUILD_LIBRARY=OFF -DBUILD_PLUGINS=OFF -DBUILD_RUBY=OFF -DBUILD_SUPPORTED=OFF -DDOWNLOAD_RUBY=OFF && ninja protoc-bin && bash -e dfhack/ci/build-lua.sh && chmod a+rx /root /root/lua53/bin/* && chmod -R a+rX /root/lua53 && cd /home/buildmaster && mkdir -p dfhack-native-bin/depends/protobuf dfhack-native-bin/ci && mv dfhack-native/ImportExecutables.cmake dfhack-native-bin && mv dfhack-native/depends/protobuf/libprotobuf.so dfhack-native/depends/protobuf/libprotoc.so dfhack-native/depends/protobuf/protoc dfhack-native-bin/depends/protobuf && mv dfhack-native/dfhack/ci/run-tests.py dfhack-native-bin/ci && rm -rf dfhack-native && mv dfhack-native-bin dfhack-native" did not complete successfully: exit code: 1

The job was canceled because "gcc-4_8" failed.