chapter08/06-coverage fail

[fancyerii]

When I follow 06-coverage example. it fails. Here are my steps:

cmake -B build -DCMAKE_BUILD_TYPE=Debug
06-coverage$ cmake --build build/ --clean-first -t coverage
[  7%] Building CXX object _deps/googletest-build/googletest/CMakeFiles/gtest.dir/src/gtest-all.cc.o
[ 14%] Linking CXX static library ../../../lib/libgtestd.a
[ 14%] Built target gtest
[ 21%] Building CXX object _deps/googletest-build/googletest/CMakeFiles/gtest_main.dir/src/gtest_main.cc.o
[ 28%] Linking CXX static library ../../../lib/libgtest_maind.a
[ 28%] Built target gtest_main
[ 35%] Building CXX object _deps/googletest-build/googlemock/CMakeFiles/gmock.dir/src/gmock-all.cc.o
[ 42%] Linking CXX static library ../../../lib/libgmockd.a
[ 42%] Built target gmock
[ 50%] Building CXX object bin/CMakeFiles/sut.dir/calc.cpp.o
[ 57%] Building CXX object bin/CMakeFiles/sut.dir/run.cpp.o
[ 64%] Building CXX object bin/CMakeFiles/sut.dir/rng_mt19937.cpp.o
[ 71%] Linking CXX static library libsut.a
[ 71%] Built target sut
[ 78%] Building CXX object test/CMakeFiles/unit_tests.dir/calc_test.cpp.o
[ 85%] Building CXX object test/CMakeFiles/unit_tests.dir/run_test.cpp.o
[ 92%] Linking CXX executable unit_tests
[ 92%] Built target unit_tests
[100%] Running coverage for unit_tests...
Deleting all .da files in . and subdirectories
Done.
Running main() from /home/lili/codes/Modern-CMake-for-Cpp/examples/chapter08/06-coverage/build/_deps/googletest-src/googletest/src/gtest_main.cc
[==========] Running 4 tests from 2 test suites.
[----------] Global test environment set-up.
[----------] 3 tests from CalcTestSuite
[ RUN      ] CalcTestSuite.SumAddsTwoInts
[       OK ] CalcTestSuite.SumAddsTwoInts (0 ms)
[ RUN      ] CalcTestSuite.MultiplyMultipliesTwoInts
[       OK ] CalcTestSuite.MultiplyMultipliesTwoInts (0 ms)
[ RUN      ] CalcTestSuite.AddRandomNumberAddsThree
[       OK ] CalcTestSuite.AddRandomNumberAddsThree (0 ms)
[----------] 3 tests from CalcTestSuite (0 ms total)

[----------] 1 test from RunTest
[ RUN      ] RunTest.RunOutputsCorrectEquations
[       OK ] RunTest.RunOutputsCorrectEquations (0 ms)
[----------] 1 test from RunTest (0 ms total)

[----------] Global test environment tear-down
[==========] 4 tests from 2 test suites ran. (0 ms total)
[  PASSED  ] 4 tests.
Capturing coverage data from .
Found gcov version: 7.5.0
Scanning . for .gcda files ...
Found 3 data files in .
Processing sut.dir/calc.cpp.gcda
geninfo: WARNING: /home/lili/codes/Modern-CMake-for-Cpp/examples/chapter08/06-coverage/build/bin/CMakeFiles/sut.dir/calc.cpp.gcno: Overlong record at end of file!
/home/lili/codes/Modern-CMake-for-Cpp/examples/chapter08/06-coverage/build/bin/CMakeFiles/sut.dir/calc.cpp.gcno:version 'A84*', prefer 'A75*'
/home/lili/codes/Modern-CMake-for-Cpp/examples/chapter08/06-coverage/build/bin/CMakeFiles/sut.dir/calc.cpp.gcno:no functions found
geninfo: WARNING: gcov did not create any files for /home/lili/codes/Modern-CMake-for-Cpp/examples/chapter08/06-coverage/build/bin/CMakeFiles/sut.dir/calc.cpp.gcda!
Processing sut.dir/run.cpp.gcda
geninfo: WARNING: /home/lili/codes/Modern-CMake-for-Cpp/examples/chapter08/06-coverage/build/bin/CMakeFiles/sut.dir/run.cpp.gcno: Overlong record at end of file!
/home/lili/codes/Modern-CMake-for-Cpp/examples/chapter08/06-coverage/build/bin/CMakeFiles/sut.dir/run.cpp.gcno:version 'A84*', prefer 'A75*'
/home/lili/codes/Modern-CMake-for-Cpp/examples/chapter08/06-coverage/build/bin/CMakeFiles/sut.dir/run.cpp.gcno:no functions found
geninfo: WARNING: gcov did not create any files for /home/lili/codes/Modern-CMake-for-Cpp/examples/chapter08/06-coverage/build/bin/CMakeFiles/sut.dir/run.cpp.gcda!
Processing sut.dir/rng_mt19937.cpp.gcda
geninfo: WARNING: /home/lili/codes/Modern-CMake-for-Cpp/examples/chapter08/06-coverage/build/bin/CMakeFiles/sut.dir/rng_mt19937.cpp.gcno: Overlong record at end of file!
/home/lili/codes/Modern-CMake-for-Cpp/examples/chapter08/06-coverage/build/bin/CMakeFiles/sut.dir/rng_mt19937.cpp.gcno:version 'A84*', prefer 'A75*'
/home/lili/codes/Modern-CMake-for-Cpp/examples/chapter08/06-coverage/build/bin/CMakeFiles/sut.dir/rng_mt19937.cpp.gcno:no functions found
geninfo: WARNING: gcov did not create any files for /home/lili/codes/Modern-CMake-for-Cpp/examples/chapter08/06-coverage/build/bin/CMakeFiles/sut.dir/rng_mt19937.cpp.gcda!
Finished .info-file creation
Reading tracefile coverage.info
lcov: ERROR: no valid records found in tracefile coverage.info
test/CMakeFiles/coverage.dir/build.make:70: recipe for target 'test/CMakeFiles/coverage' failed
make[3]: *** [test/CMakeFiles/coverage] Error 255
CMakeFiles/Makefile2:252: recipe for target 'test/CMakeFiles/coverage.dir/all' failed
make[2]: *** [test/CMakeFiles/coverage.dir/all] Error 2
CMakeFiles/Makefile2:259: recipe for target 'test/CMakeFiles/coverage.dir/rule' failed
make[1]: *** [test/CMakeFiles/coverage.dir/rule] Error 2
Makefile:218: recipe for target 'coverage' failed
make: *** [coverage] Error 2

I am using cmake cmake-3.27.7 in ubuntu 18.04