CMake Warning:
  Manually-specified variables were not used by the project:

    CMAKE_EXPORT_NO_PACKAGE_REGISTRY
    protobuf_BUILD_LIBPROTOC


In file included from /home/conan/w/cci_PR-2037/.conan/data/protobuf/3.9.1/_/_/build/b6ed6852348b865abb04a1f44074bcd81d14d521/source_subfolder/src/google/protobuf/util/internal/default_value_objectwriter.cc:31:
/home/conan/w/cci_PR-2037/.conan/data/protobuf/3.9.1/_/_/build/b6ed6852348b865abb04a1f44074bcd81d14d521/source_subfolder/src/google/protobuf/util/internal/default_value_objectwriter.h:122:37: warning: 'RenderNull' overrides a member function but is not marked 'override' [-Winconsistent-missing-override]
  virtual DefaultValueObjectWriter* RenderNull(StringPiece name);
                                    ^
/home/conan/w/cci_PR-2037/.conan/data/protobuf/3.9.1/_/_/build/b6ed6852348b865abb04a1f44074bcd81d14d521/source_subfolder/src/google/protobuf/util/internal/object_writer.h:106:25: note: overridden virtual function is here
  virtual ObjectWriter* RenderNull(StringPiece name) = 0;
                        ^
clang: error: unable to execute command: Terminated
clang: error: clang frontend command failed due to signal (use -v to see invocation)
clang version 8.0.0-3 (tags/RELEASE_800/final)
Target: x86_64-pc-linux-gnu
Thread model: posix
InstalledDir: /usr/bin
clang: note: diagnostic msg: PLEASE submit a bug report to https://bugs.llvm.org/ and include the crash backtrace, preprocessed source, and associated run script.
Terminated
make[2]: *** [source_subfolder/cmake/CMakeFiles/libprotobuf.dir/build.make:895: source_subfolder/cmake/CMakeFiles/libprotobuf.dir/__/src/google/protobuf/util/internal/json_escaping.cc.o] Error 143
make[2]: *** Waiting for unfinished jobs....
clang: error: unable to execute command: Terminated
clang: error: clang frontend command failed due to signal (use -v to see invocation)
clang version 8.0.0-3 (tags/RELEASE_800/final)
Target: x86_64-pc-linux-gnu
Thread model: posix
InstalledDir: /usr/bin
clang: note: diagnostic msg: PLEASE submit a bug report to https://bugs.llvm.org/ and include the crash backtrace, preprocessed source, and associated run script.
Terminated
make[2]: *** [source_subfolder/cmake/CMakeFiles/libprotobuf.dir/build.make:856: source_subfolder/cmake/CMakeFiles/libprotobuf.dir/__/src/google/protobuf/util/internal/default_value_objectwriter.cc.o] Error 143
clang: error: unable to execute command: Terminated
clang: error: clang frontend command failed due to signal (use -v to see invocation)
clang version 8.0.0-3 (tags/RELEASE_800/final)
Target: x86_64-pc-linux-gnu
Thread model: posix
InstalledDir: /usr/bin
clang: note: diagnostic msg: PLEASE submit a bug report to https://bugs.llvm.org/ and include the crash backtrace, preprocessed source, and associated run script.
Terminated
make[2]: *** [source_subfolder/cmake/CMakeFiles/libprotobuf.dir/build.make:882: source_subfolder/cmake/CMakeFiles/libprotobuf.dir/__/src/google/protobuf/util/internal/field_mask_utility.cc.o] Error 143
make[1]: *** [CMakeFiles/Makefile2:154: source_subfolder/cmake/CMakeFiles/libprotobuf.dir/all] Error 2
make: *** [Makefile:130: all] Error 2
protobuf/3.9.1: ERROR: Package 'b6ed6852348b865abb04a1f44074bcd81d14d521' build failed
protobuf/3.9.1: WARN: Build folder /home/conan/w/cci_PR-2037/.conan/data/protobuf/3.9.1/_/_/build/b6ed6852348b865abb04a1f44074bcd81d14d521
ERROR: protobuf/3.9.1: Error in build() method, line 127
	cmake.build()
	ConanException: Error 2 while executing cmake --build '/home/conan/w/cci_PR-2037/.conan/data/protobuf/3.9.1/_/_/build/b6ed6852348b865abb04a1f44074bcd81d14d521/build_subfolder' '--' '-j3'