Thread 4 "Thread (pooled)" received signal SIGSEGV, Segmentation fault.
[Switching to Thread 0x7fffa941f700 (LWP 13935)]
0x000055555571342e in QString::QString (this=0x7fffa941e910, other=...) at /usr/include/x86_64-linux-gnu/qt5/QtCore/qstring.h:955
955 inline QString::QString(const QString &other) Q_DECL_NOTHROW : d(other.d)
(gdb) backtrace
#0 0x000055555571342e in QString::QString(QString const&) (this=0x7fffa941e910, other=...) at /usr/include/x86_64-linux-gnu/qt5/QtCore/qstring.h:955
#1 0x0000555555b066f1 in ClipController::clipUrl() const (this=0x110) at /home/bruno/build/kdenlive.bsantos/src/mltcontroller/clipcontroller.cpp:536
#2 0x0000555555947e47 in ProjectClip::url() const (this=0x0) at /home/bruno/build/kdenlive.bsantos/src/bin/projectclip.cpp:288
#3 0x0000555555acf4da in MeltJob::startJob() (this=0x55556ef2b3f0) at /home/bruno/build/kdenlive.bsantos/src/jobs/meltjob.cpp:58
#4 0x0000555555aaec39 in AbstractClipJob::execute(std::shared_ptr<AbstractClipJob> const&) (job=
std::shared_ptr<AbstractClipJob> (use count 2, weak count 0) = {...}) at /home/bruno/build/kdenlive.bsantos/src/jobs/abstractclipjob.cpp:59
#5 0x0000555555ac123c in QtConcurrent::FunctionWrapper1<bool, std::shared_ptr<AbstractClipJob> const&>::operator()(std::shared_ptr<AbstractClipJob> const&) (this=0x7fffa45ebea8, u=std::shared_ptr<AbstractClipJob> (use count 2, weak count 0) = {...})
at /usr/include/x86_64-linux-gnu/qt5/QtConcurrent/qtconcurrentfunctionwrappers.h:80
#6 0x0000555555ac0ee1 in QtConcurrent::MappedEachKernel<__gnu_cxx::__normal_iterator<std::shared_ptr<AbstractClipJob> const*, std::vector<std::shared_ptr<AbstractClipJob>, std::allocator<std::shared_ptr<AbstractClipJob> > > >, QtConcurrent::FunctionWrapper1<bool, std::shared_ptr<AbstractClipJob> const&> >::runIteration(__gnu_cxx::__normal_iterator<std::shared_ptr<AbstractClipJob> const*, std::vector<std::shared_ptr<AbstractClipJob>, std::allocator<std::shared_ptr<AbstractClipJob> > > >, int, bool*) (this=0x7fffa45ebe70, it=
std::shared_ptr<AbstractClipJob> (use count 2, weak count 0) = {get() = 0x55556ef2b3f0}, result=0x7fffa45f6b18)
at /usr/include/x86_64-linux-gnu/qt5/QtConcurrent/qtconcurrentmapkernel.h:175
#7 0x0000555555ac0f71 in QtConcurrent::MappedEachKernel<__gnu_cxx::__normal_iterator<std::shared_ptr<AbstractClipJob> const*, std::vector<std::shared_ptr<AbstractClipJob>, std::allocator<std::shared_ptr<AbstractClipJob> > > >, QtConcurrent::FunctionWrapper1<bool, std::shared_ptr<AbstractClipJob> const&> >::runIterations(__gnu_cxx::__normal_iterator<std::shared_ptr<AbstractClipJob> const*, std::vector<std::shared_ptr<AbstractClipJob>, std::allocator<std::shared_ptr<AbstractClipJob> > > >, int, int, bool*) (this=0x7fffa45ebe70, sequenceBeginIterator=
std::shared_ptr<AbstractClipJob> (use count 2, weak count 0) = {get() = 0x55556ef2b3f0}, begin=0, end=1, results=0x7fffa45f6b18)
at /usr/include/x86_64-linux-gnu/qt5/QtConcurrent/qtconcurrentmapkernel.h:185
#8 0x0000555555ac14e9 in QtConcurrent::IterateKernel<__gnu_cxx::__normal_iterator<std::shared_ptr<AbstractClipJob> const*, std::vector<std::shared_ptr<AbstractClipJob>, std::allocator<std::shared_ptr<AbstractClipJob> > > >, bool>::forThreadFunction() (this=0x7fffa45ebe70)
at /usr/include/x86_64-linux-gnu/qt5/QtConcurrent/qtconcurrentiteratekernel.h:255
#9 0x0000555555ac10fe in QtConcurrent::IterateKernel<__gnu_cxx::__normal_iterator<std::shared_ptr<AbstractClipJob> const*, std::vector<std::shared_ptr<AbstractClipJob>, std::allocator<std::shared_ptr<AbstractClipJob> > > >, bool>::threadFunction() (this=0x7fffa45ebe70)
at /usr/include/x86_64-linux-gnu/qt5/QtConcurrent/qtconcurrentiteratekernel.h:217
#10 0x00007ffff3c69d5d in QtConcurrent::ThreadEngineBase::run() () at /usr/lib/x86_64-linux-gnu/libQt5Concurrent.so.5
#11 0x00007fffef7d1472 in () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#12 0x00007fffef7cdb52 in () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#13 0x00007fffeb06a6db in start_thread (arg=0x7fffa941f700) at pthread_create.c:463
#14 0x00007fffeecd588f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95