(gdb) thread apply all bt

Thread 34 (Thread 0x7fe9e5f13700 (LWP 26562)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at ../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1  0x00007fea09247ddb in boost::condition_variable::wait (this=0x211c3a8, m=...) at /usr/include/boost/thread/pthread/condition_variable.hpp:73
#2  0x00007fea09242501 in gazebo::common::ModelDatabase::UpdateModelCache (this=0x7fea0c988580 <SingletonT<gazebo::common::ModelDatabase>::GetInstance()::t>, _fetchImmediately=false) at gazebo/common/ModelDatabase.cc:284
#3  0x00007fea08fbaa4a in ?? () from /usr/lib/x86_64-linux-gnu/libboost_thread.so.1.54.0
#4  0x00007fea098ec184 in start_thread (arg=0x7fe9e5f13700) at pthread_create.c:312
#5  0x00007fea082c037d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:111

Thread 33 (Thread 0x7fe9dc696700 (LWP 26563)):
#0  0x00007fea082b2fdd in poll () at ../sysdeps/unix/syscall-template.S:81
#1  0x00007fea0475dfe4 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007fea0475e30a in g_main_loop_run () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007fe9e3eee336 in ?? () from /usr/lib/x86_64-linux-gnu/libgio-2.0.so.0
#4  0x00007fea04782f05 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#5  0x00007fea098ec184 in start_thread (arg=0x7fe9dc696700) at pthread_create.c:312
#6  0x00007fea082c037d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:111

Thread 32 (Thread 0x7fe9dbe95700 (LWP 26564)):
#0  0x00007fea082b2fdd in poll () at ../sysdeps/unix/syscall-template.S:81
#1  0x00007fea0475dfe4 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007fea0475e0ec in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007fea0475e129 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#4  0x00007fea04782f05 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#5  0x00007fea098ec184 in start_thread (arg=0x7fe9dbe95700) at pthread_create.c:312
#6  0x00007fea082c037d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:111

Thread 31 (Thread 0x7fe9cbfff700 (LWP 26567)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at ../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1  0x00007fea0641e690 in ?? () from /usr/lib/x86_64-linux-gnu/libOgreMain.so.1.8.1
#2  0x00007fea0641d6af in Ogre::DefaultWorkQueue::waitForNextRequest() () from /usr/lib/x86_64-linux-gnu/libOgreMain.so.1.8.1
#3  0x00007fea0641db24 in Ogre::DefaultWorkQueue::_threadMain() () from /usr/lib/x86_64-linux-gnu/libOgreMain.so.1.8.1
#4  0x00007fea08fbaa4a in ?? () from /usr/lib/x86_64-linux-gnu/libboost_thread.so.1.54.0
#5  0x00007fea098ec184 in start_thread (arg=0x7fe9cbfff700) at pthread_create.c:312
#6  0x00007fea082c037d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:111

Thread 30 (Thread 0x7fe9cb7fe700 (LWP 26568)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at ../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1  0x00007fea0641e690 in ?? () from /usr/lib/x86_64-linux-gnu/libOgreMain.so.1.8.1
#2  0x00007fea0641d6af in Ogre::DefaultWorkQueue::waitForNextRequest() () from /usr/lib/x86_64-linux-gnu/libOgreMain.so.1.8.1
#3  0x00007fea0641db24 in Ogre::DefaultWorkQueue::_threadMain() () from /usr/lib/x86_64-linux-gnu/libOgreMain.so.1.8.1
#4  0x00007fea08fbaa4a in ?? () from /usr/lib/x86_64-linux-gnu/libboost_thread.so.1.54.0
#5  0x00007fea098ec184 in start_thread (arg=0x7fe9cb7fe700) at pthread_create.c:312
#6  0x00007fea082c037d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:111

Thread 29 (Thread 0x7fe9caffd700 (LWP 26569)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at ../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1  0x00007fea0641e690 in ?? () from /usr/lib/x86_64-linux-gnu/libOgreMain.so.1.8.1
#2  0x00007fea0641d6af in Ogre::DefaultWorkQueue::waitForNextRequest() () from /usr/lib/x86_64-linux-gnu/libOgreMain.so.1.8.1
#3  0x00007fea0641db24 in Ogre::DefaultWorkQueue::_threadMain() () from /usr/lib/x86_64-linux-gnu/libOgreMain.so.1.8.1
#4  0x00007fea08fbaa4a in ?? () from /usr/lib/x86_64-linux-gnu/libboost_thread.so.1.54.0
#5  0x00007fea098ec184 in start_thread (arg=0x7fe9caffd700) at pthread_create.c:312
#6  0x00007fea082c037d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:111

Thread 28 (Thread 0x7fe9ca7fc700 (LWP 26570)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at ../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1  0x00007fea0641e690 in ?? () from /usr/lib/x86_64-linux-gnu/libOgreMain.so.1.8.1
#2  0x00007fea0641d6af in Ogre::DefaultWorkQueue::waitForNextRequest() () from /usr/lib/x86_64-linux-gnu/libOgreMain.so.1.8.1
#3  0x00007fea0641db24 in Ogre::DefaultWorkQueue::_threadMain() () from /usr/lib/x86_64-linux-gnu/libOgreMain.so.1.8.1
#4  0x00007fea08fbaa4a in ?? () from /usr/lib/x86_64-linux-gnu/libboost_thread.so.1.54.0
#5  0x00007fea098ec184 in start_thread (arg=0x7fe9ca7fc700) at pthread_create.c:312
#6  0x00007fea082c037d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:111

Thread 27 (Thread 0x7fe9c9ffb700 (LWP 26571)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at ../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1  0x00007fea0641e690 in ?? () from /usr/lib/x86_64-linux-gnu/libOgreMain.so.1.8.1
#2  0x00007fea0641d6af in Ogre::DefaultWorkQueue::waitForNextRequest() () from /usr/lib/x86_64-linux-gnu/libOgreMain.so.1.8.1
#3  0x00007fea0641db24 in Ogre::DefaultWorkQueue::_threadMain() () from /usr/lib/x86_64-linux-gnu/libOgreMain.so.1.8.1
#4  0x00007fea08fbaa4a in ?? () from /usr/lib/x86_64-linux-gnu/libboost_thread.so.1.54.0
#5  0x00007fea098ec184 in start_thread (arg=0x7fe9c9ffb700) at pthread_create.c:312
#6  0x00007fea082c037d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:111

Thread 26 (Thread 0x7fe9c97fa700 (LWP 26572)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at ../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1  0x00007fea0641e690 in ?? () from /usr/lib/x86_64-linux-gnu/libOgreMain.so.1.8.1
#2  0x00007fea0641d6af in Ogre::DefaultWorkQueue::waitForNextRequest() () from /usr/lib/x86_64-linux-gnu/libOgreMain.so.1.8.1
#3  0x00007fea0641db24 in Ogre::DefaultWorkQueue::_threadMain() () from /usr/lib/x86_64-linux-gnu/libOgreMain.so.1.8.1
#4  0x00007fea08fbaa4a in ?? () from /usr/lib/x86_64-linux-gnu/libboost_thread.so.1.54.0
#5  0x00007fea098ec184 in start_thread (arg=0x7fe9c97fa700) at pthread_create.c:312
#6  0x00007fea082c037d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:111

Thread 25 (Thread 0x7fe9c8ff9700 (LWP 26573)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at ../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1  0x00007fea0641e690 in ?? () from /usr/lib/x86_64-linux-gnu/libOgreMain.so.1.8.1
#2  0x00007fea0641d6af in Ogre::DefaultWorkQueue::waitForNextRequest() () from /usr/lib/x86_64-linux-gnu/libOgreMain.so.1.8.1
#3  0x00007fea0641db24 in Ogre::DefaultWorkQueue::_threadMain() () from /usr/lib/x86_64-linux-gnu/libOgreMain.so.1.8.1
#4  0x00007fea08fbaa4a in ?? () from /usr/lib/x86_64-linux-gnu/libboost_thread.so.1.54.0
#5  0x00007fea098ec184 in start_thread (arg=0x7fe9c8ff9700) at pthread_create.c:312
#6  0x00007fea082c037d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:111

Thread 24 (Thread 0x7fe9bbfff700 (LWP 26574)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at ../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1  0x00007fea0641e690 in ?? () from /usr/lib/x86_64-linux-gnu/libOgreMain.so.1.8.1
#2  0x00007fea0641d6af in Ogre::DefaultWorkQueue::waitForNextRequest() () from /usr/lib/x86_64-linux-gnu/libOgreMain.so.1.8.1
#3  0x00007fea0641db24 in Ogre::DefaultWorkQueue::_threadMain() () from /usr/lib/x86_64-linux-gnu/libOgreMain.so.1.8.1
#4  0x00007fea08fbaa4a in ?? () from /usr/lib/x86_64-linux-gnu/libboost_thread.so.1.54.0
#5  0x00007fea098ec184 in start_thread (arg=0x7fe9bbfff700) at pthread_create.c:312
#6  0x00007fea082c037d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:111

Thread 23 (Thread 0x7fe9bb7fe700 (LWP 26575)):
#0  __clock_nanosleep (clock_id=0, flags=0, req=0x7fe9bb7fdba0, rem=0xffffffffffffffff) at ../sysdeps/unix/sysv/linux/clock_nanosleep.c:49
#1  0x00007fea09272753 in gazebo::common::Time::Sleep (_time=...) at gazebo/common/Time.cc:427
#2  0x00007fea09272917 in gazebo::common::Time::MSleep (_ms=_ms@entry=1) at gazebo/common/Time.cc:446
#3  0x00007fea0c7613c4 in gazebo::Server::Run (this=0x7fe9940008c0) at gazebo/Server.cc:581
#4  0x000000000040bd50 in QTestFixture::RunServer (this=0x7ffd49b6aee0, _worldFilename=..., _paused=<optimized out>, _createScene=<optimized out>) at gazebo/gui/QTestFixture.cc:138
#5  0x00007fea08fbaa4a in ?? () from /usr/lib/x86_64-linux-gnu/libboost_thread.so.1.54.0
#6  0x00007fea098ec184 in start_thread (arg=0x7fe9bb7fe700) at pthread_create.c:312
#7  0x00007fea082c037d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:111

Thread 22 (Thread 0x7fe9baffd700 (LWP 26576)):
#0  0x00007fea082c0a13 in epoll_wait () at ../sysdeps/unix/syscall-template.S:81
#1  0x00007fea07f80f58 in boost::asio::detail::epoll_reactor::run (this=0x7fe994001910, block=<optimized out>, ops=...) at /usr/include/boost/asio/detail/impl/epoll_reactor.ipp:392
#2  0x00007fea07f86628 in do_run_one (ec=..., this_thread=..., lock=..., this=<optimized out>) at /usr/include/boost/asio/detail/impl/task_io_service.ipp:368
#3  boost::asio::detail::task_io_service::run (this=0x7fe9940013f0, ec=...) at /usr/include/boost/asio/detail/impl/task_io_service.ipp:153
#4  0x00007fea07f94bc6 in boost::asio::io_service::run (this=0x7fe994001380) at /usr/include/boost/asio/impl/io_service.ipp:59
#5  0x00007fea08fbaa4a in ?? () from /usr/lib/x86_64-linux-gnu/libboost_thread.so.1.54.0
#6  0x00007fea098ec184 in start_thread (arg=0x7fe9baffd700) at pthread_create.c:312
#7  0x00007fea082c037d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:111

Thread 21 (Thread 0x7fe9ba7fc700 (LWP 26577)):
#0  __clock_nanosleep (clock_id=0, flags=0, req=0x7fe9ba7fbd10, rem=0xffffffffffffffff) at ../sysdeps/unix/sysv/linux/clock_nanosleep.c:49
#1  0x00007fea09272753 in gazebo::common::Time::Sleep (_time=...) at gazebo/common/Time.cc:427
#2  0x00007fea09272917 in gazebo::common::Time::MSleep (_ms=_ms@entry=10) at gazebo/common/Time.cc:446
#3  0x00007fea0c770665 in gazebo::Master::Run (this=0x7fe994000a60) at gazebo/Master.cc:382
#4  0x00007fea08b58a60 in ?? () from /usr/lib/x86_64-linux-gnu/libstdc++.so.6
#5  0x00007fea098ec184 in start_thread (arg=0x7fe9ba7fc700) at pthread_create.c:312
#6  0x00007fea082c037d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:111

Thread 20 (Thread 0x7fe9b9ffb700 (LWP 26578)):
#0  pthread_cond_timedwait@@GLIBC_2.3.2 () at ../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_timedwait.S:238
#1  0x00007fea07f8f770 in do_wait_until (timeout=..., m=..., this=0x7fea0c987da8 <SingletonT<gazebo::transport::ConnectionManager>::GetInstance()::t+8>) at /usr/include/boost/thread/pthread/condition_variable.hpp:108
#2  timed_wait (wait_until=..., m=..., this=0x7fea0c987da8 <SingletonT<gazebo::transport::ConnectionManager>::GetInstance()::t+8>) at /usr/include/boost/thread/pthread/condition_variable_fwd.hpp:108
#3  timed_wait<boost::date_time::subsecond_duration<boost::posix_time::time_duration, 1000l> > (wait_duration=..., m=..., this=0x7fea0c987da8 <SingletonT<gazebo::transport::ConnectionManager>::GetInstance()::t+8>) at /usr/include/boost/thread/pthread/condition_variable_fwd.hpp:123
#4  gazebo::transport::ConnectionManager::Run (this=0x7fea0c987da0 <SingletonT<gazebo::transport::ConnectionManager>::GetInstance()::t>) at gazebo/transport/ConnectionManager.cc:316
#5  0x00007fea08fbaa4a in ?? () from /usr/lib/x86_64-linux-gnu/libboost_thread.so.1.54.0
#6  0x00007fea098ec184 in start_thread (arg=0x7fe9b9ffb700) at pthread_create.c:312
#7  0x00007fea082c037d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:111

Thread 19 (Thread 0x7fe9db694700 (LWP 26579)):
#0  0x00007fea082c0a13 in epoll_wait () at ../sysdeps/unix/syscall-template.S:81
#1  0x00007fe9fbcbcb16 in ?? () from /usr/lib/x86_64-linux-gnu/libzmq.so.3
#2  0x00007fe9fbce11e0 in ?? () from /usr/lib/x86_64-linux-gnu/libzmq.so.3
#3  0x00007fea098ec184 in start_thread (arg=0x7fe9db694700) at pthread_create.c:312
#4  0x00007fea082c037d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:111

Thread 18 (Thread 0x7fe9b93d4700 (LWP 26580)):
#0  0x00007fea082c0a13 in epoll_wait () at ../sysdeps/unix/syscall-template.S:81
#1  0x00007fe9fbcbcb16 in ?? () from /usr/lib/x86_64-linux-gnu/libzmq.so.3
#2  0x00007fe9fbce11e0 in ?? () from /usr/lib/x86_64-linux-gnu/libzmq.so.3
#3  0x00007fea098ec184 in start_thread (arg=0x7fe9b93d4700) at pthread_create.c:312
#4  0x00007fea082c037d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:111

Thread 17 (Thread 0x7fe9b8bd3700 (LWP 26581)):
#0  0x00007fea082b2fdd in poll () at ../sysdeps/unix/syscall-template.S:81
#1  0x00007fe9fbce935d in zmq_poll () from /usr/lib/x86_64-linux-gnu/libzmq.so.3
#2  0x00007fea04eac4a5 in ignition::transport::NodeShared::RunReceptionTask() () from /usr/lib/x86_64-linux-gnu/libignition-transport3.so.3
#3  0x00007fea08b58a60 in ?? () from /usr/lib/x86_64-linux-gnu/libstdc++.so.6
#4  0x00007fea098ec184 in start_thread (arg=0x7fe9b8bd3700) at pthread_create.c:312
#5  0x00007fea082c037d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:111

Thread 16 (Thread 0x7fe9a3fff700 (LWP 26582)):
#0  0x00007fea082b2fdd in poll () at ../sysdeps/unix/syscall-template.S:81
#1  0x00007fe9fbce935d in zmq_poll () from /usr/lib/x86_64-linux-gnu/libzmq.so.3
#2  0x00007fea04eb6de0 in ignition::transport::Discovery<ignition::transport::MessagePublisher>::RecvMessages() () from /usr/lib/x86_64-linux-gnu/libignition-transport3.so.3
#3  0x00007fea08b58a60 in ?? () from /usr/lib/x86_64-linux-gnu/libstdc++.so.6
#4  0x00007fea098ec184 in start_thread (arg=0x7fe9a3fff700) at pthread_create.c:312
#5  0x00007fea082c037d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:111

Thread 15 (Thread 0x7fe9a37fe700 (LWP 26583)):
#0  0x00007fea082b2fdd in poll () at ../sysdeps/unix/syscall-template.S:81
#1  0x00007fe9fbce935d in zmq_poll () from /usr/lib/x86_64-linux-gnu/libzmq.so.3
#2  0x00007fea04eb9300 in ignition::transport::Discovery<ignition::transport::ServicePublisher>::RecvMessages() () from /usr/lib/x86_64-linux-gnu/libignition-transport3.so.3
#3  0x00007fea08b58a60 in ?? () from /usr/lib/x86_64-linux-gnu/libstdc++.so.6
#4  0x00007fea098ec184 in start_thread (arg=0x7fe9a37fe700) at pthread_create.c:312
#5  0x00007fea082c037d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:111

Thread 14 (Thread 0x7fe9a22e2700 (LWP 26585)):
#0  0x00007fea082b2fdd in poll () at ../sysdeps/unix/syscall-template.S:81
#1  0x00007fe9b81ba031 in ?? () from /usr/lib/x86_64-linux-gnu/libpulse.so.0
#2  0x00007fe9b81ab83c in pa_mainloop_poll () from /usr/lib/x86_64-linux-gnu/libpulse.so.0
#3  0x00007fe9b81abece in pa_mainloop_iterate () from /usr/lib/x86_64-linux-gnu/libpulse.so.0
#4  0x00007fe9b81abf80 in pa_mainloop_run () from /usr/lib/x86_64-linux-gnu/libpulse.so.0
#5  0x00007fe9b81b9fe3 in ?? () from /usr/lib/x86_64-linux-gnu/libpulse.so.0
#6  0x00007fe9a2bd1f08 in ?? () from /usr/lib/x86_64-linux-gnu/pulseaudio/libpulsecommon-4.0.so
#7  0x00007fea098ec184 in start_thread (arg=0x7fe9a22e2700) at pthread_create.c:312
#8  0x00007fea082c037d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:111

Thread 13 (Thread 0x7fe9a1ae1700 (LWP 26586)):
#0  0x00007fea098f3b9d in nanosleep () at ../sysdeps/unix/syscall-template.S:81
#1  0x00007fe9ffe6654a in ?? () from /usr/lib/x86_64-linux-gnu/libopenal.so.1
#2  0x00007fe9ffe735eb in ?? () from /usr/lib/x86_64-linux-gnu/libopenal.so.1
#3  0x00007fe9ffe65e6a in ?? () from /usr/lib/x86_64-linux-gnu/libopenal.so.1
#4  0x00007fea098ec184 in start_thread (arg=0x7fe9a1ae1700) at pthread_create.c:312
#5  0x00007fea082c037d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:111

Thread 12 (Thread 0x7fe9a0ea8700 (LWP 26587)):
#0  syscall () at ../sysdeps/unix/sysv/linux/x86_64/syscall.S:38
#1  0x00007fea076142db in ?? () from /usr/lib/libtbb.so.2
#2  0x00007fea076142f9 in ?? () from /usr/lib/libtbb.so.2
#3  0x00007fea098ec184 in start_thread (arg=0x7fe9a0ea8700) at pthread_create.c:312
#4  0x00007fea082c037d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:111

Thread 11 (Thread 0x7fe9a0aa7700 (LWP 26588)):
#0  syscall () at ../sysdeps/unix/sysv/linux/x86_64/syscall.S:38
#1  0x00007fea076142db in ?? () from /usr/lib/libtbb.so.2
#2  0x00007fea076142f9 in ?? () from /usr/lib/libtbb.so.2
#3  0x00007fea098ec184 in start_thread (arg=0x7fe9a0aa7700) at pthread_create.c:312
#4  0x00007fea082c037d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:111

Thread 10 (Thread 0x7fe9a06a6700 (LWP 26589)):
#0  syscall () at ../sysdeps/unix/sysv/linux/x86_64/syscall.S:38
#1  0x00007fea076142db in ?? () from /usr/lib/libtbb.so.2
#2  0x00007fea076142f9 in ?? () from /usr/lib/libtbb.so.2
#3  0x00007fea098ec184 in start_thread (arg=0x7fe9a06a6700) at pthread_create.c:312
#4  0x00007fea082c037d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:111

Thread 9 (Thread 0x7fe977ffe700 (LWP 26590)):
#0  syscall () at ../sysdeps/unix/sysv/linux/x86_64/syscall.S:38
#1  0x00007fea076142db in ?? () from /usr/lib/libtbb.so.2
#2  0x00007fea076142f9 in ?? () from /usr/lib/libtbb.so.2
#3  0x00007fea098ec184 in start_thread (arg=0x7fe977ffe700) at pthread_create.c:312
#4  0x00007fea082c037d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:111

Thread 8 (Thread 0x7fe977bfd700 (LWP 26591)):
#0  syscall () at ../sysdeps/unix/sysv/linux/x86_64/syscall.S:38
#1  0x00007fea076142db in ?? () from /usr/lib/libtbb.so.2
#2  0x00007fea076142f9 in ?? () from /usr/lib/libtbb.so.2
#3  0x00007fea098ec184 in start_thread (arg=0x7fe977bfd700) at pthread_create.c:312
#4  0x00007fea082c037d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:111

Thread 7 (Thread 0x7fe9777fc700 (LWP 26593)):
#0  syscall () at ../sysdeps/unix/sysv/linux/x86_64/syscall.S:38
#1  0x00007fea076142db in ?? () from /usr/lib/libtbb.so.2
#2  0x00007fea076142f9 in ?? () from /usr/lib/libtbb.so.2
#3  0x00007fea098ec184 in start_thread (arg=0x7fe9777fc700) at pthread_create.c:312
#4  0x00007fea082c037d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:111

Thread 6 (Thread 0x7fe9773fb700 (LWP 26592)):
#0  syscall () at ../sysdeps/unix/sysv/linux/x86_64/syscall.S:38
#1  0x00007fea076142db in ?? () from /usr/lib/libtbb.so.2
#2  0x00007fea076142f9 in ?? () from /usr/lib/libtbb.so.2
#3  0x00007fea098ec184 in start_thread (arg=0x7fe9773fb700) at pthread_create.c:312
#4  0x00007fea082c037d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:111

Thread 5 (Thread 0x7fe9766f9700 (LWP 26594)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at ../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1  0x00007fea07cfc69b in boost::condition_variable::wait (this=this@entry=0x7fe9944b8c58, m=...) at /usr/include/boost/thread/pthread/condition_variable.hpp:73
#2  0x00007fea07cfa953 in gazebo::sensors::SensorManager::SensorContainer::RunLoop (this=0x7fe9944b8c00) at gazebo/sensors/SensorManager.cc:503
#3  0x00007fea08fbaa4a in ?? () from /usr/lib/x86_64-linux-gnu/libboost_thread.so.1.54.0
#4  0x00007fea098ec184 in start_thread (arg=0x7fe9766f9700) at pthread_create.c:312
#5  0x00007fea082c037d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:111

Thread 4 (Thread 0x7fe975ef8700 (LWP 26595)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at ../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1  0x00007fea07cfc69b in boost::condition_variable::wait (this=this@entry=0x7fe994521358, m=...) at /usr/include/boost/thread/pthread/condition_variable.hpp:73
#2  0x00007fea07cfa953 in gazebo::sensors::SensorManager::SensorContainer::RunLoop (this=0x7fe994521300) at gazebo/sensors/SensorManager.cc:503
#3  0x00007fea08fbaa4a in ?? () from /usr/lib/x86_64-linux-gnu/libboost_thread.so.1.54.0
#4  0x00007fea098ec184 in start_thread (arg=0x7fe975ef8700) at pthread_create.c:312
#5  0x00007fea082c037d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:111

Thread 3 (Thread 0x7fe9756f7700 (LWP 26596)):
#0  __lll_lock_wait () at ../nptl/sysdeps/unix/sysv/linux/x86_64/lowlevellock.S:135
#1  0x00007fea098ee664 in _L_lock_952 () from /lib/x86_64-linux-gnu/libpthread.so.0
#2  0x00007fea098ee4c6 in __GI___pthread_mutex_lock (mutex=0x28d4920) at ../nptl/pthread_mutex_lock.c:114
#3  0x00007fea0bd57ca3 in __gthread_mutex_lock (__mutex=<optimized out>) at /usr/include/x86_64-linux-gnu/c++/4.8/bits/gthr-default.h:748
#4  __gthread_recursive_mutex_lock (__mutex=<optimized out>) at /usr/include/x86_64-linux-gnu/c++/4.8/bits/gthr-default.h:810
#5  std::recursive_mutex::lock (this=<optimized out>) at /usr/include/c++/4.8/mutex:175
#6  0x00007fea0bd8668c in lock_guard (__m=..., this=<synthetic pointer>) at /usr/include/c++/4.8/mutex:414
#7  gazebo::gui::IntrospectionCurveHandler::OnIntrospection (this=0x7ffd49b6a220, _msg=...) at gazebo/gui/plot/IntrospectionCurveHandler.cc:273
#8  0x00007fea0bd88ba0 in operator() (__args#1=..., __args#0=..., this=0x7fe93c0014f0) at /usr/include/c++/4.8/functional:2471
#9  ignition::transport::SubscriptionHandler<gazebo::msgs::Param_V>::RunLocalCallback (this=0x7fe93c0014c0, _msg=..., _info=...) at /usr/include/ignition/transport3/ignition/transport/SubscriptionHandler.hh:213
#10 0x00007fea04e9d736 in ignition::transport::Node::Publisher::Publish(google::protobuf::Message const&) () from /usr/lib/x86_64-linux-gnu/libignition-transport3.so.3
#11 0x00007fea09b42ecc in gazebo::util::IntrospectionManager::Update (this=this@entry=0x614b00 <SingletonT<gazebo::util::IntrospectionManager>::GetInstance()::t>) at gazebo/util/IntrospectionManager.cc:246
#12 0x00007fea0a3e9e84 in gazebo::physics::World::Update (this=this@entry=0x7fe994962500) at gazebo/physics/World.cc:843
#13 0x00007fea0a3edbe9 in gazebo::physics::World::Step (this=this@entry=0x7fe994962500) at gazebo/physics/World.cc:697
#14 0x00007fea0a3ee0e8 in gazebo::physics::World::RunLoop (this=0x7fe994962500) at gazebo/physics/World.cc:506
#15 0x00007fea08b58a60 in ?? () from /usr/lib/x86_64-linux-gnu/libstdc++.so.6
#16 0x00007fea098ec184 in start_thread (arg=0x7fe9756f7700) at pthread_create.c:312
#17 0x00007fea082c037d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:111

Thread 2 (Thread 0x7fe974ef6700 (LWP 26597)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at ../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1  0x00007fea08b554dc in std::condition_variable::wait(std::unique_lock<std::mutex>&) () from /usr/lib/x86_64-linux-gnu/libstdc++.so.6
#2  0x00007fea0a3e286e in gazebo::physics::World::LogWorker (this=0x7fe994962500) at gazebo/physics/World.cc:2757
#3  0x00007fea08b58a60 in ?? () from /usr/lib/x86_64-linux-gnu/libstdc++.so.6
#4  0x00007fea098ec184 in start_thread (arg=0x7fe974ef6700) at pthread_create.c:312
#5  0x00007fea082c037d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:111

Thread 1 (Thread 0x7fea0cb18880 (LWP 26561)):
#0  __lll_lock_wait () at ../nptl/sysdeps/unix/sysv/linux/x86_64/lowlevellock.S:135
#1  0x00007fea098ee649 in _L_lock_909 () from /lib/x86_64-linux-gnu/libpthread.so.0
#2  0x00007fea098ee470 in __GI___pthread_mutex_lock (mutex=0x7fe9952c13c0) at ../nptl/pthread_mutex_lock.c:79
#3  0x00007fea09b39853 in __gthread_mutex_lock (__mutex=<optimized out>) at /usr/include/x86_64-linux-gnu/c++/4.8/bits/gthr-default.h:748
#4  std::mutex::lock (this=<optimized out>) at /usr/include/c++/4.8/mutex:134
#5  0x00007fea09b422c1 in lock_guard (__m=..., this=<synthetic pointer>) at /usr/include/c++/4.8/mutex:414
Python Exception <class 'IndexError'> list index out of range: 
#6  gazebo::util::IntrospectionManager::UpdateFilter (this=this@entry=0x614b00 <SingletonT<gazebo::util::IntrospectionManager>::GetInstance()::t>, _filterId="kcazfm", _newItems=std::set with 2 elements) at gazebo/util/IntrospectionManager.cc:339
#7  0x00007fea09b435e4 in gazebo::util::IntrospectionManager::UpdateFilter (this=0x614b00 <SingletonT<gazebo::util::IntrospectionManager>::GetInstance()::t>, _req=..., _result=@0x7ffd49b698c0: false) at gazebo/util/IntrospectionManager.cc:536
#8  0x00007fea09b3f506 in ignition::transport::Node::Request<gazebo::msgs::Param_V, gazebo::msgs::Empty>(std::string const&, gazebo::msgs::Param_V const&, std::function<void (gazebo::msgs::Empty const&, bool)>&) (this=0x20948a0, _topic="/introspection/mvtsmb/filter_update", _req=..., _cb=...) at /usr/include/ignition/transport3/ignition/transport/Node.hh:752
Python Exception <class 'IndexError'> list index out of range: 
#9  0x00007fea09b384d7 in gazebo::util::IntrospectionClient::UpdateFilter(std::string const&, std::string const&, std::set<std::string, std::less<std::string>, std::allocator<std::string> > const&, std::function<void (bool)> const&) const (this=0x28d4978, _managerId="mvtsmb", _filterId="kcazfm", _newItems=std::set with 2 elements, _cb=...) at gazebo/util/IntrospectionClient.cc:301
#10 0x00007fea0bd87642 in gazebo::gui::IntrospectionCurveHandler::__lambda23::operator() (__closure=<optimized out>, _items=..., _itemsResult=<optimized out>) at gazebo/gui/plot/IntrospectionCurveHandler.cc:513
Python Exception <class 'IndexError'> list index out of range: 
#11 0x00007fea09b368be in operator() (__args#1=true, __args#0=std::set with 13 elements, this=0x28d3e70) at /usr/include/c++/4.8/functional:2471
#12 operator() (_result=<optimized out>, _rep=..., __closure=0x28d3e70) at gazebo/util/IntrospectionClient.cc:464
#13 std::_Function_handler<void(const gazebo::msgs::Param_V&, bool), gazebo::util::IntrospectionClient::Items(const string&, const std::function<void(const std::set<std::basic_string<char> >&, bool)>&) const::__lambda25>::_M_invoke(const std::_Any_data &, const gazebo::msgs::Param_V &, bool) (__functor=..., __args#0=..., __args#1=<optimized out>) at /usr/include/c++/4.8/functional:2071
#14 0x00007fea09b40492 in ignition::transport::Node::Request<gazebo::msgs::Empty, gazebo::msgs::Param_V>(std::string const&, gazebo::msgs::Empty const&, std::function<void (gazebo::msgs::Param_V const&, bool)>&) (this=0x20948a0, _topic="/introspection/mvtsmb/items", _req=..., _cb=...) at /usr/include/ignition/transport3/ignition/transport/Node.hh:754
#15 0x00007fea09b3908f in gazebo::util::IntrospectionClient::Items(std::string const&, std::function<void (std::set<std::string, std::less<std::string>, std::allocator<std::string> > const&, bool)> const&) const (this=0x28d4978, _managerId="mvtsmb", _cb=...) at gazebo/util/IntrospectionClient.cc:471
#16 0x00007fea0bd84a95 in gazebo::gui::IntrospectionCurveHandler::AddItemToFilter(std::string const&, std::function<void (bool)> const&) (this=this@entry=0x7ffd49b6a220, _name="data://path?p=variable_a", _cb=...) at gazebo/gui/plot/IntrospectionCurveHandler.cc:539
#17 0x00007fea0bd85b91 in gazebo::gui::IntrospectionCurveHandler::AddCurve (this=this@entry=0x7ffd49b6a220, _name="data://path?p=variable_a", _curve=std::weak_ptr (count 2, weak 12) 0x27499e0) at gazebo/gui/plot/IntrospectionCurveHandler.cc:144
#18 0x000000000040aee9 in IntrospectionCurveHandler_TEST::AddRemoveCurve (this=<optimized out>) at gazebo/gui/plot/IntrospectionCurveHandler_TEST.cc:55
#19 0x00007fea0a89c908 in QMetaMethod::invoke(QObject*, Qt::ConnectionType, QGenericReturnArgument, QGenericArgument, QGenericArgument, QGenericArgument, QGenericArgument, QGenericArgument, QGenericArgument, QGenericArgument, QGenericArgument, QGenericArgument, QGenericArgument) const () from /usr/lib/x86_64-linux-gnu/libQtCore.so.4
#20 0x00007fea0a89edc2 in QMetaObject::invokeMethod(QObject*, char const*, Qt::ConnectionType, QGenericReturnArgument, QGenericArgument, QGenericArgument, QGenericArgument, QGenericArgument, QGenericArgument, QGenericArgument, QGenericArgument, QGenericArgument, QGenericArgument, QGenericArgument) () from /usr/lib/x86_64-linux-gnu/libQtCore.so.4
#21 0x00007fea0b8bafbf in ?? () from /usr/lib/x86_64-linux-gnu/libQtTest.so.4
#22 0x00007fea0b8bbddf in QTest::qExec(QObject*, int, char**) () from /usr/lib/x86_64-linux-gnu/libQtTest.so.4
#23 0x0000000000408375 in main (argc=1, argv=0x7ffd49b6b018) at gazebo/gui/plot/IntrospectionCurveHandler_TEST.cc:79
(gdb)