diff --git a/templates/tools/dockerfile/test/fuzzers.template b/templates/tools/dockerfile/test/fuzzers.template
index d4e3d6441108a87f77f49a47677c50eede2cf256..763a6169eac586909eb13766e3b1921176bf75c3 100644
--- a/templates/tools/dockerfile/test/fuzzers.template
+++ b/templates/tools/dockerfile/test/fuzzers.template
@@ -46,6 +46,5 @@ template: |
   RUN ar ruv libFuzzer.a Fuzzer*.o
   RUN mv libFuzzer.a /usr/lib
   RUN rm -f Fuzzer*.o
-  RUN mkdir /var/local/jenkins
   # Define the default command.
   CMD ["bash"]
diff --git a/tools/dockerfile/test/fuzzers/json_fuzzer_test/Dockerfile b/tools/dockerfile/test/fuzzers/json_fuzzer_test/Dockerfile
index beae39c59657a4256574361cf35823ff6c3fa57e..1c95555df737411b284b4060ea632e7bd9ce1357 100644
--- a/tools/dockerfile/test/fuzzers/json_fuzzer_test/Dockerfile
+++ b/tools/dockerfile/test/fuzzers/json_fuzzer_test/Dockerfile
@@ -90,6 +90,5 @@ RUN clang++ -c -g -O2 -std=c++11 llvm/lib/Fuzzer/*.cpp -IFuzzer
 RUN ar ruv libFuzzer.a Fuzzer*.o
 RUN mv libFuzzer.a /usr/lib
 RUN rm -f Fuzzer*.o
-RUN mkdir /var/local/jenkins
 # Define the default command.
 CMD ["bash"]
diff --git a/tools/fuzzer/build_and_run_fuzzer.sh b/tools/fuzzer/build_and_run_fuzzer.sh
index ace79523ea2d6260b677e8b5f5eb17e8597628c3..b335859ecc2dfaf11109a77bd1a252efe5dd2022 100755
--- a/tools/fuzzer/build_and_run_fuzzer.sh
+++ b/tools/fuzzer/build_and_run_fuzzer.sh
@@ -32,5 +32,5 @@
 set -ex
 
 git submodule update --init
-make CONFIG=$config $1
+make CONFIG=$config $1 -j3
 bins/$config/$1