MTEval Build error

[VikrantChauhan001]

Cloning into 'mteval'...
remote: Enumerating objects: 504, done.
remote: Total 504 (delta 0), reused 0 (delta 0), pack-reused 504
Receiving objects: 100% (504/504), 175.58 KiB | 454.00 KiB/s, done.
Resolving deltas: 100% (290/290), done.
-- The CXX compiler identification is GNU 9.2.1
-- Check for working CXX compiler: /usr/bin/c++
-- Check for working CXX compiler: /usr/bin/c++ -- works
-- Detecting CXX compiler ABI info
-- Detecting CXX compiler ABI info - done
-- Detecting CXX compile features
-- Detecting CXX compile features - done
-- Boost version: 1.67.0
-- Found the following Boost libraries:
-- program_options
-- unit_test_framework
-- Boost include directory: /usr/include
-- Configuring done
-- Generating done
-- Build files have been written to: /home/vikrant/psgen_docker/try2/pseudogen/tools/mteval/build
Scanning dependencies of target mteval
[ 5%] Building CXX object mteval/CMakeFiles/mteval.dir/Dictionary.cc.o
[ 11%] Building CXX object mteval/CMakeFiles/mteval.dir/BLEUEvaluator.cc.o
[ 17%] Building CXX object mteval/CMakeFiles/mteval.dir/NISTEvaluator.cc.o
[ 23%] Building CXX object mteval/CMakeFiles/mteval.dir/EvaluatorFactory.cc.o
/home/vikrant/psgen_docker/try2/pseudogen/tools/mteval/mteval/BLEUEvaluator.cc: In member function ‘virtual MTEval::Statistics MTEval::BLEUEvaluator::map(const MTEval::Sample&) const’:
/home/vikrant/psgen_docker/try2/pseudogen/tools/mteval/mteval/BLEUEvaluator.cc:58:19: error: moving a local object in a return statement prevents copy elision [-Werror=pessimizing-move]
58 | return std::move(stats);
| ~~~~~~~~~^~~~~~~
/home/vikrant/psgen_docker/try2/pseudogen/tools/mteval/mteval/BLEUEvaluator.cc:58:19: note: remove ‘std::move’ call
/home/vikrant/psgen_docker/try2/pseudogen/tools/mteval/mteval/NISTEvaluator.cc: In member function ‘virtual MTEval::Statistics MTEval::NISTEvaluator::map(const MTEval::Sample&) const’:
/home/vikrant/psgen_docker/try2/pseudogen/tools/mteval/mteval/NISTEvaluator.cc:73:19: error: moving a local object in a return statement prevents copy elision [-Werror=pessimizing-move]
73 | return std::move(stats);
| ~~~~~~~~~^~~~~~~
/home/vikrant/psgen_docker/try2/pseudogen/tools/mteval/mteval/NISTEvaluator.cc:73:19: note: remove ‘std::move’ call
cc1plus: all warnings being treated as errors
make[2]: *** [mteval/CMakeFiles/mteval.dir/build.make:63: mteval/CMakeFiles/mteval.dir/BLEUEvaluator.cc.o] Error 1
make[2]: *** Waiting for unfinished jobs....
cc1plus: all warnings being treated as errors
make[2]: *** [mteval/CMakeFiles/mteval.dir/build.make:102: mteval/CMakeFiles/mteval.dir/NISTEvaluator.cc.o] Error 1
make[1]: *** [CMakeFiles/Makefile2:224: mteval/CMakeFiles/mteval.dir/all] Error 2
make: *** [Makefile:95: all] Error 2