Race between concurrent `javah` runs trying to create `java/jni` output directory.

[debug] execute contextualize
/usr/lib/jvm/java-1.8.0-openjdk-1.8.0.191.b12-1.el7_6.x86_64/bin/javah -d java/jni                              \
  -classpath java/target/mesos-1.10.0.jar:/tmp/SRC/build/mesos-1.10.0/_build/src/java/target/protobuf-java-3.5.0.jar                        \
   org.apache.mesos.Log
/usr/lib/jvm/java-1.8.0-openjdk-1.8.0.191.b12-1.el7_6.x86_64/bin/javah -d java/jni                              \
  -classpath java/target/mesos-1.10.0.jar:/tmp/SRC/build/mesos-1.10.0/_build/src/java/target/protobuf-java-3.5.0.jar                        \
   org.apache.mesos.MesosExecutorDriver
/usr/lib/jvm/java-1.8.0-openjdk-1.8.0.191.b12-1.el7_6.x86_64/bin/javah -d java/jni                              \
  -classpath java/target/mesos-1.10.0.jar:/tmp/SRC/build/mesos-1.10.0/_build/src/java/target/protobuf-java-3.5.0.jar                        \
   org.apache.mesos.MesosSchedulerDriver
/usr/lib/jvm/java-1.8.0-openjdk-1.8.0.191.b12-1.el7_6.x86_64/bin/javah -d java/jni                              \
  -classpath java/target/mesos-1.10.0.jar:/tmp/SRC/build/mesos-1.10.0/_build/src/java/target/protobuf-java-3.5.0.jar                        \
   org.apache.mesos.state.AbstractState
/usr/lib/jvm/java-1.8.0-openjdk-1.8.0.191.b12-1.el7_6.x86_64/bin/javah -d java/jni                              \
  -classpath java/target/mesos-1.10.0.jar:/tmp/SRC/build/mesos-1.10.0/_build/src/java/target/protobuf-java-3.5.0.jar                        \
   org.apache.mesos.state.LevelDBState
/usr/lib/jvm/java-1.8.0-openjdk-1.8.0.191.b12-1.el7_6.x86_64/bin/javah -d java/jni                              \
  -classpath java/target/mesos-1.10.0.jar:/tmp/SRC/build/mesos-1.10.0/_build/src/java/target/protobuf-java-3.5.0.jar                        \
   org.apache.mesos.state.LogState
/usr/lib/jvm/java-1.8.0-openjdk-1.8.0.191.b12-1.el7_6.x86_64/bin/javah -d java/jni                              \
  -classpath java/target/mesos-1.10.0.jar:/tmp/SRC/build/mesos-1.10.0/_build/src/java/target/protobuf-java-3.5.0.jar                        \
   org.apache.mesos.state.Variable
/usr/lib/jvm/java-1.8.0-openjdk-1.8.0.191.b12-1.el7_6.x86_64/bin/javah -d java/jni                              \
  -classpath java/target/mesos-1.10.0.jar:/tmp/SRC/build/mesos-1.10.0/_build/src/java/target/protobuf-java-3.5.0.jar                        \
   org.apache.mesos.state.ZooKeeperState
/usr/lib/jvm/java-1.8.0-openjdk-1.8.0.191.b12-1.el7_6.x86_64/bin/javah -d java/jni                              \
  -classpath java/target/mesos-1.10.0.jar:/tmp/SRC/build/mesos-1.10.0/_build/src/java/target/protobuf-java-3.5.0.jar                        \
   org.apache.mesos.v1.scheduler.V1Mesos
/usr/lib/jvm/java-1.8.0-openjdk-1.8.0.191.b12-1.el7_6.x86_64/bin/javah -d java/jni                              \
  -classpath java/target/mesos-1.10.0.jar:/tmp/SRC/build/mesos-1.10.0/_build/src/java/target/protobuf-java-3.5.0.jar                        \
   org.apache.mesos.v1.scheduler.V0Mesos
Error: The directory java/jni could not be create for output.