Smoketest action fails when new file add into the repository with PR

119.Applying merge patch
120../merge-patch:132: trailing whitespace.
121    import teststd.Math as testMod;    
122warning: 1 line adds whitespace errors.
123[detached HEAD 3de37e90c] merge-patch
124 4 files changed, 7 insertions(+), 7 deletions(-)
125Cached source tree files:
126./system/aws/aws-sdk-cpp/aws-cpp-sdk-core/include/aws/core/SDKConfig.h
127./plugins/couchbase/libcouchbase/tests/CouchbaseMock.jar
128./plugins/couchbase/libcouchbase/packaging/distinfo/distinfo.cmake
129================
1307518 blocks
131error: The following untracked working tree files would be overwritten by checkout:
132	testing/regress/ecl/key/teststdlibrary2.xml
133	testing/regress/ecl/teststdlibrary2.ecl
134Please move or remove them before you switch branches.
135Aborting
136Error: Process completed with exit code 1. 

  git checkout $(cat ../build/cache-sha)
  git submodule update --init --recursive --jobs 4
  echo "Applying merge patch"
  git apply ../merge-patch
  git add .                     # Add new files before commit
  git -c user.name='Smoketest' -c user.email='smoke@test.com' commit -a -m 'merge-patch'