QtCreator segfault on startup (MacOS)

[peteispo]

I'm getting a segfault when I try to start QtCreator on my iMac.
What's odd is that it worked fine yesterday, and I don't see anything having updated or changed since then.
Starting from the command line returns almost immediately with

Segmentation fault: 11

Clicking on the icon in my dock brings up a "QtCreator quit unexpectedly" dialog, which gives me a crash report that is too large to insert here, but if I skip out the large binary images section I can post some of it:

Process:               Qt Creator [12732]
Path:                  /Users/USER/*/Qt Creator.app/Contents/MacOS/Qt Creator
Identifier:            org.qt-project.qtcreator
Version:               4.11.0 (4.11.0)
Code Type:             X86-64 (Native)
Parent Process:        ??? [1]
Responsible:           Qt Creator [12732]
User ID:               501

Date/Time:             2020-01-08 07:59:27.098 +0000
OS Version:            Mac OS X 10.13.6 (17G10021)
Report Version:        12
Anonymous UUID:        3E3E011A-CE13-846F-632E-8C082737A1E3

Sleep/Wake UUID:       02CF8103-5595-4D68-AE29-BB0E1D42A2F7

Time Awake Since Boot: 450000 seconds
Time Since Wake:       230000 seconds

System Integrity Protection: enabled

Crashed Thread:        0  Dispatch queue: com.apple.main-thread

Exception Type:        EXC_BAD_ACCESS (SIGSEGV)
Exception Codes:       KERN_INVALID_ADDRESS at 0x0000000000000000
Exception Note:        EXC_CORPSE_NOTIFY

Termination Signal:    Segmentation fault: 11
Termination Reason:    Namespace SIGNAL, Code 0xb
Terminating Process:   exc handler [0]

VM Regions Near 0:
--> 
    __TEXT                 0000000109986000-000000010999a000 [   80K] r-x/rwx SM=COW  /Users/USER/*/Qt Creator.app/Contents/MacOS/Qt Creator

Thread 0 Crashed:: Dispatch queue: com.apple.main-thread
0   libUtils.4.11.0.dylib         	0x0000000109ab07b0 QtPrivate::QFunctorSlotObject<Utils::FancyMainWindowPrivate::FancyMainWindowPrivate(Utils::FancyMainWindow*)::$_2, 1, QtPrivate::List<bool>, void>::impl(int, QtPrivate::QSlotObjectBase*, QObject*, void**, bool*) + 48
1   org.qt-project.QtCore         	0x000000010ac459b5 0x10aa1e000 + 2259381
2   org.qt-project.QtWidgets      	0x0000000109cf640e QAction::setChecked(bool) + 174
3   libDebugger.dylib             	0x00000001109f72ef Utils::DebuggerMainWindow::restorePersistentSettings() + 1151
4   libDebugger.dylib             	0x00000001109f6c5d Utils::DebuggerMainWindow::DebuggerMainWindow() + 925
5   libDebugger.dylib             	0x00000001109fe8fb Utils::Perspective::Perspective(QString const&, QString const&, QString const&, QString const&) + 267
6   libDebugger.dylib             	0x0000000110a01d25 Debugger::Internal::DebuggerPluginPrivate::DebuggerPluginPrivate(QStringList const&) + 1781
7   libDebugger.dylib             	0x0000000110a13747 Debugger::Internal::DebuggerPlugin::initialize(QStringList const&, QString*) + 39
8   libExtensionSystem.4.11.0.dylib	0x00000001099ccecb ExtensionSystem::Internal::PluginSpecPrivate::initializePlugin() + 107
9   libExtensionSystem.4.11.0.dylib	0x00000001099bf6a0 ExtensionSystem::Internal::PluginManagerPrivate::loadPlugin(ExtensionSystem::PluginSpec*, ExtensionSystem::PluginSpec::State) + 656
10  libExtensionSystem.4.11.0.dylib	0x00000001099b7f90 ExtensionSystem::Internal::PluginManagerPrivate::loadPlugins() + 592
11  org.qt-project.qtcreator      	0x0000000109991e28 main + 14520
12  libdyld.dylib                 	0x00007fff5e4da015 start + 1

Thread 1:
0   libsystem_kernel.dylib        	0x00007fff5e62b28a __workq_kernreturn + 10
1   libsystem_pthread.dylib       	0x00007fff5e7f220e _pthread_wqthread + 1552
2   libsystem_pthread.dylib       	0x00007fff5e7f1be9 start_wqthread + 13

Thread 2:
0   libsystem_kernel.dylib        	0x00007fff5e62b28a __workq_kernreturn + 10
1   libsystem_pthread.dylib       	0x00007fff5e7f2009 _pthread_wqthread + 1035
2   libsystem_pthread.dylib       	0x00007fff5e7f1be9 start_wqthread + 13

Thread 3:
0   libsystem_pthread.dylib       	0x00007fff5e7f1bdc start_wqthread + 0
1   ???                           	0x0063002f00790072 0 + 27866224565747826

Thread 4:
0   libsystem_kernel.dylib        	0x00007fff5e62b28a __workq_kernreturn + 10
1   libsystem_pthread.dylib       	0x00007fff5e7f220e _pthread_wqthread + 1552
2   libsystem_pthread.dylib       	0x00007fff5e7f1be9 start_wqthread + 13

Thread 5:
0   libsystem_kernel.dylib        	0x00007fff5e62b28a __workq_kernreturn + 10
1   libsystem_pthread.dylib       	0x00007fff5e7f2009 _pthread_wqthread + 1035
2   libsystem_pthread.dylib       	0x00007fff5e7f1be9 start_wqthread + 13

Thread 6:
0   libsystem_pthread.dylib       	0x00007fff5e7f1bdc start_wqthread + 0
1   ???                           	0x007865646e496d65 0 + 33888479226719589

Thread 7:: com.apple.CFSocket.private
0   libsystem_kernel.dylib        	0x00007fff5e62acf2 __select + 10
1   com.apple.CoreFoundation      	0x00007fff36534a4b __CFSocketManager + 635
2   libsystem_pthread.dylib       	0x00007fff5e7f2661 _pthread_body + 340
3   libsystem_pthread.dylib       	0x00007fff5e7f250d _pthread_start + 377
4   libsystem_pthread.dylib       	0x00007fff5e7f1bf9 thread_start + 13

Thread 0 crashed with X86 Thread State (64-bit):
  rax: 0x0000000000000000  rbx: 0x0000000000000000  rcx: 0x00007ffee6278ec0  rdx: 0x000060400027e080
  rdi: 0x0000000000000000  rsi: 0x00006040002244e0  rbp: 0x00007ffee6278de0  rsp: 0x00007ffee6278dd0
   r8: 0x0000000000000000   r9: 0x0000000000000000  r10: 0x000000010c25fbb8  r11: 0x0000000109e4c1d0
  r12: 0x00006040004be5a0  r13: 0x00007fff96bf6380  r14: 0x0000000000000001  r15: 0x000060400027e080
  rip: 0x0000000109ab07b0  rfl: 0x0000000000010246  cr2: 0x000070000bb92b18
  
Logical CPU:     0
Error Code:      0x0200005d
Trap Number:     133

[Skipped binary images section]

External Modification Summary:
  Calls made by other processes targeting this process:
    task_for_pid: 0
    thread_create: 0
    thread_set_state: 0
  Calls made by this process:
    task_for_pid: 0
    thread_create: 0
    thread_set_state: 0
  Calls made by all processes on this machine:
    task_for_pid: 255744
    thread_create: 0
    thread_set_state: 3170

VM Region Summary:
ReadOnly portion of Libraries: Total=580.2M resident=0K(0%) swapped_out_or_unallocated=580.2M(100%)
Writable regions: Total=116.8M written=0K(0%) resident=0K(0%) swapped_out=0K(0%) unallocated=116.8M(100%)
 
                                VIRTUAL   REGION 
REGION TYPE                        SIZE    COUNT (non-coalesced) 
===========                     =======  ======= 
Accelerate framework               128K        2 
Activity Tracing                   256K        2 
CG backing stores                  336K        3 
CoreImage                            8K        3 
CoreUI image file                  180K        3 
JS VM register file               4360K        5 
JS VM register file (reserved)    2040K        2         reserved VM address space (unallocated)
Kernel Alloc Once                    8K        2 
MALLOC                            93.1M       33 
MALLOC guard page                   32K        9 
OpenGL GLSL                        256K        4 
STACK GUARD                       56.0M        9 
Stack                             11.6M        9 
VM_ALLOCATE                        280K       14 
WebAssembly memory                4096K        2 
__DATA                            36.9M      374 
__FONT_DATA                          4K        2 
__GLSLBUILTINS                    2588K        2 
__LINKEDIT                       228.0M      108 
__TEXT                           352.2M      362 
__UNICODE                          560K        2 
mapped file                       55.5M       85 
shared memory                      628K       10 
===========                     =======  ======= 
TOTAL                            848.7M     1024 
TOTAL, minus reserved VM space   846.7M     1024 

Model: iMac12,1, BootROM 87.0.0.0.0, 4 processors, Intel Core i5, 2.5 GHz, 8 GB, SMC 1.71f22
Graphics: AMD Radeon HD 6750M, AMD Radeon HD 6750M, PCIe
Memory Module: BANK 0/DIMM0, 2 GB, DDR3, 1333 MHz, 0x80CE, 0x4D34373142353637334648302D4348392020
Memory Module: BANK 1/DIMM0, 2 GB, DDR3, 1333 MHz, 0x80CE, 0x4D34373142353637334648302D4348392020
Memory Module: BANK 0/DIMM1, 4 GB, DDR3, 1333 MHz, 0x859B, 0x435434473353313333394D2E4D3136464B44
AirPort: spairport_wireless_card_type_airport_extreme (0x168C, 0x9A), Atheros 9380: 4.0.74.0-P2P
Bluetooth: Version 6.0.7f16, 3 services, 27 devices, 1 incoming serial ports
Network Service: Ethernet, Ethernet, en0
Network Service: Maidstone Hotel VPN, PPP (L2TP), ppp0
Serial ATA Device: ST3500418AS, 500.11 GB
Serial ATA Device: OPTIARC DVD RW AD-5690H
USB Device: USB 2.0 Bus
USB Device: Hub
USB Device: IR Receiver
USB Device: Internal Memory Card Reader
USB Device: USB 2.0 Bus
USB Device: FaceTime HD Camera (Built-in)
USB Device: Hub
USB Device: Wireless Receiver
USB Device: BRCM2046 Hub
USB Device: Bluetooth USB Host Controller
Thunderbolt Bus: iMac, Apple Inc., 22.1

[jsulm]

@peteispo Try to start QtCreator with disabled plug-ins to see whether it makes a difference (-noload all).