infra: fix python coverage (#7641)

* infra: fix python coverage

The python coverage has not started working on oss-fuzz.com yet. This is
an effort to fix this.

* add logs and stats files

* log stderr too

1 files changed, 8 insertions, 1 deletions

diff --git a/infra/base-images/base-runner/coverage b/infra/base-images/base-runner/coverage
index 9eb0e9b6..30e9920e 100755
--- a/infra/base-images/base-runner/coverage
+++ b/infra/base-images/base-runner/coverage
@@ -155,7 +155,11 @@ function run_python_fuzz_target {
   local target=$1
   local zipped_sources="$DUMPS_DIR/$target.deps.zip"
   local corpus_real="$CORPUS_DIR/${target}"
-  $OUT/$target.pkg $corpus_real -atheris_runs=$(ls -la $corpus_real | wc -l)
+  # Write dummy stats file
+  echo "{}" > "$FUZZER_STATS_DIR/$target.json"
+
+  # Run fuzzer
+  $OUT/$target.pkg $corpus_real -atheris_runs=$(ls -la $corpus_real | wc -l) > $LOGS_DIR/$target.log 2>&1
   if (( $? != 0 )); then
     echo "Error happened getting coverage of $target"
     echo "This is likely because Atheris did not exit gracefully"
@@ -308,6 +312,9 @@ elif [[ $FUZZING_LANGUAGE == "python" ]]; then
   python3 /usr/local/bin/python_coverage_runner_help.py combine .coverage_*
   python3 /usr/local/bin/python_coverage_runner_help.py html
   mv htmlcov/* $REPORT_PLATFORM_DIR/
+
+  # Create an empty summary file for now
+  echo "{}" >> $SUMMARY_FILE
 elif [[ $FUZZING_LANGUAGE == "jvm" ]]; then
 
   # From this point on the script does not tolerate any errors.