ExampleTests PythonFramework fails with sigabort.

$ ./src/examples/python/test-framework local
[..]
I0124 15:22:46.637238 65925120 master.cpp:563] Using default 'crammd5' authenticator
W0124 15:22:46.637269 65925120 authenticator.cpp:513] No credentials provided, authentication requests will be refused
I0124 15:22:46.637284 65925120 authenticator.cpp:520] Initializing server SASL
I0124 15:22:46.659503 2385417024 resolver.cpp:69] Creating default secret resolver
I0124 15:22:46.659624 2385417024 containerizer.cpp:304] Using isolation { environment_secret, filesystem/posix, posix/mem, posix/cpu }
I0124 15:22:46.659951 2385417024 provisioner.cpp:299] Using default backend 'copy'
I0124 15:22:46.661628 67534848 slave.cpp:262] Mesos agent started on (1)@192.168.178.20:49682
I0124 15:22:46.661669 67534848 slave.cpp:263] Flags at startup: --appc_simple_discovery_uri_prefix="http://" --appc_store_dir="/var/folders/_t/rdp354gx7j5fjww270kbk6_r0000gn/T/mesos/store/appc" --authenticate_http_executors="false" --authenticate_http_readonly="false" --authenticate_http_readwrite="false" --authenticatee="crammd5" --authentication_backoff_factor="1secs" --authorizer="local" --container_disk_watch_interval="15secs" --containerizers="mesos" --default_role="*" --disk_watch_interval="1mins" --docker="docker" --docker_kill_orphans="true" --docker_registry="https://registry-1.docker.io" --docker_remove_delay="6hrs" --docker_socket="/var/run/docker.sock" --docker_stop_timeout="0ns" --docker_store_dir="/var/folders/_t/rdp354gx7j5fjww270kbk6_r0000gn/T/mesos/store/docker" --docker_volume_checkpoint_dir="/var/run/mesos/isolators/docker/volume" --enforce_container_disk_quota="false" --executor_registration_timeout="1mins" --executor_reregistration_timeout="2secs" --executor_shutdown_grace_period="5secs" --fetcher_cache_dir="/var/folders/_t/rdp354gx7j5fjww270kbk6_r0000gn/T/mesos/work/agents/0/fetch" --fetcher_cache_size="2GB" --frameworks_home="" --gc_delay="1weeks" --gc_disk_headroom="0.1" --hadoop_home="" --help="false" --hostname_lookup="true" --http_command_executor="false" --http_heartbeat_interval="30secs" --initialize_driver_logging="true" --isolation="posix/cpu,posix/mem" --launcher="posix" --launcher_dir="/usr/local/libexec/mesos" --logbufsecs="0" --logging_level="INFO" --max_completed_executors_per_framework="150" --oversubscribed_resources_interval="15secs" --port="5051" --qos_correction_interval_min="0ns" --quiet="false" --reconfiguration_policy="equal" --recover="reconnect" --recovery_timeout="15mins" --registration_backoff_factor="1secs" --runtime_dir="/var/folders/_t/rdp354gx7j5fjww270kbk6_r0000gn/T/mesos/work/agents/0/run" --sandbox_directory="/mnt/mesos/sandbox" --strict="true" --switch_user="true" --version="false" --work_dir="/var/folders/_t/rdp354gx7j5fjww270kbk6_r0000gn/T/mesos/work/agents/0/work" --zk_session_timeout="10secs"
python(1780,0x700004068000) malloc: *** error for object 0x106ac07c8: pointer being freed was not allocated
*** set a breakpoint in malloc_error_break to debug

* thread #7, stop reason = signal SIGABRT
  * frame #0: 0x00007fff55321e3e libsystem_kernel.dylib`__pthread_kill + 10
    frame #1: 0x00007fff55460150 libsystem_pthread.dylib`pthread_kill + 333
    frame #2: 0x00007fff5527e312 libsystem_c.dylib`abort + 127
    frame #3: 0x00007fff5537b866 libsystem_malloc.dylib`free + 521
    frame #4: 0x000000010d24daac _scheduler.so`google::protobuf::internal::ArenaStringPtr::DestroyNoArena(this=0x000070000ac355b0, default_value="") at arenastring.h:264
    frame #5: 0x000000010d2fe1aa _scheduler.so`mesos::Resource::SharedDtor(this=0x000070000ac35580) at mesos.pb.cc:31016
    frame #6: 0x000000010d2fe063 _scheduler.so`mesos::Resource::~Resource(this=0x000070000ac35580) at mesos.pb.cc:31011
    frame #7: 0x000000010d2fe485 _scheduler.so`mesos::Resource::~Resource(this=0x000070000ac35580) at mesos.pb.cc:31009
    frame #8: 0x000000010b0257c7 _scheduler.so`mesos::Resources::parse(name="cpus", value="8", role="*") at resources.cpp:702
    frame #9: 0x000000010c7ae4c9 _scheduler.so`mesos::internal::slave::Containerizer::resources(flags=0x000000010202bac0) at containerizer.cpp:118
    frame #10: 0x000000010c3a93e1 _scheduler.so`mesos::internal::slave::Slave::initialize(this=0x000000010202ba00) at slave.cpp:472
    frame #11: 0x000000010c3d7cb2 _scheduler.so`virtual thunk to mesos::internal::slave::Slave::initialize(this=0x000000010202ba00) at slave.cpp:0
    frame #12: 0x000000010e459c39 _scheduler.so`process::ProcessManager::resume(this=0x00000001005790f0, process=0x000000010202ba00) at process.cpp:2819
    frame #13: 0x000000010e57ef75 _scheduler.so`process::ProcessManager::init_threads(this=0x00000001001a9fa8)::$_2::operator()() const at process.cpp:2443
    frame #14: 0x000000010e57eb30 _scheduler.so`void* std::__1::__thread_proxy<std::__1::tuple<std::__1::unique_ptr<std::__1::__thread_struct, std::__1::default_delete<std::__1::__thread_struct> >, process::ProcessManager::init_threads()::$_2> >(void*) [inlined] decltype(__f=0x00000001001a9fa8)::$_2>(fp)(std::__1::forward<>(fp0))) std::__1::__invoke<process::ProcessManager::init_threads()::$_2>(process::ProcessManager::init_threads()::$_2&&) at type_traits:4291
    frame #15: 0x000000010e57eb1f _scheduler.so`void* std::__1::__thread_proxy<std::__1::tuple<std::__1::unique_ptr<std::__1::__thread_struct, std::__1::default_delete<std::__1::__thread_struct> >, process::ProcessManager::init_threads()::$_2> >(void*) [inlined] void std::__1::__thread_execute<std::__1::unique_ptr<std::__1::__thread_struct, std::__1::default_delete<std::__1::__thread_struct> >, process::ProcessManager::init_threads()::$_2>(__t=0x00000001001a9fa0)::$_2>&, std::__1::__tuple_indices<>) at thread:336
    frame #16: 0x000000010e57eafb _scheduler.so`void* std::__1::__thread_proxy<std::__1::tuple<std::__1::unique_ptr<std::__1::__thread_struct, std::__1::default_delete<std::__1::__thread_struct> >, process::ProcessManager::init_threads()::$_2> >(__vp=0x00000001001a9fa0) at thread:346
    frame #17: 0x00007fff5545d6c1 libsystem_pthread.dylib`_pthread_body + 340
    frame #18: 0x00007fff5545d56d libsystem_pthread.dylib`_pthread_start + 377
    frame #19: 0x00007fff5545cc5d libsystem_pthread.dylib`thread_start + 13