Crash in MXSpaceService.prepareData()

[gileluard]

Steps to reproduce

This bug has been reported by TF

What happened?

Incident Identifier: E2565DFD-7D2B-4528-A5BE-7473EA5B63DC
Hardware Model:      iPhone12,8
Process:             Riot [11830]
Path:                /private/var/containers/Bundle/Application/5C29322C-D88F-421B-9F8A-7D4342448367/Riot.app/Riot
Identifier:          im.vector.app
Version:             1.6.2 (20211008175454)
AppStoreTools:       13A227
AppVariant:          1:iPhone12,8:15
Beta:                YES
Code Type:           ARM-64 (Native)
Role:                Foreground
Parent Process:      launchd [1]
Coalition:           im.vector.app [1795]

Date/Time:           2021-10-11 00:27:28.4650 -0400
Launch Time:         2021-10-10 23:27:06.4849 -0400
OS Version:          iPhone OS 15.0.1 (19A348)
Release Type:        User
Baseband Version:    3.00.00
Report Version:      104

Exception Type:  EXC_BAD_ACCESS (SIGSEGV)
Exception Subtype: KERN_INVALID_ADDRESS at 0x8000000000000008 -> 0x0000000000000008 (possible pointer authentication failure)
Exception Codes: 0x0000000000000001, 0x8000000000000008
VM Region Info: 0x8 is not in any region.  Bytes before following region: 4376395768
      REGION TYPE                 START - END      [ VSIZE] PRT/MAX SHRMOD  REGION DETAIL
      UNUSED SPACE AT START
--->  
      __TEXT                   104da8000-104f2c000 [ 1552K] r-x/r-x SM=COW  ...Riot.app/Riot
Exception Note:  EXC_CORPSE_NOTIFY
Terminating Process: exc handler [11830]
Triggered by Thread:  16

Thread 16 name:
Thread 16 Crashed:
0   libswiftCore.dylib            	0x0000000188268864 0x187e9f000 + 3971172
1   MatrixSDK                     	0x0000000108b11984 specialized Set._Variant.insert(_:) + 2546052 (<compiler-generated>:0)
2   MatrixSDK                     	0x0000000108b09384 closure #1 in MXSpaceService.prepareData(with:index:output:completion:) + 2511748 (MXSpaceService.swift:417)
3   MatrixSDK                     	0x0000000108ab5fc0 thunk for @escaping @callee_guaranteed () -> () + 20 (<compiler-generated>:0)
4   libdispatch.dylib             	0x000000018317bc04 _dispatch_call_block_and_release + 32 (init.c:1516)
5   libdispatch.dylib             	0x000000018317d950 _dispatch_client_callout + 20 (object.m:560)
6   libdispatch.dylib             	0x0000000183180e04 _dispatch_continuation_pop + 504 (inline_internal.h:2597)
7   libdispatch.dylib             	0x0000000183180460 _dispatch_async_redirect_invoke + 596 (queue.c:823)
8   libdispatch.dylib             	0x000000018318ef48 _dispatch_root_queue_drain + 388 (inline_internal.h:0)
9   libdispatch.dylib             	0x000000018318f768 _dispatch_worker_thread2 + 164 (queue.c:6935)
10  libsystem_pthread.dylib       	0x00000001f30d9174 _pthread_wqthread + 228 (pthread.c:2508)
11  libsystem_pthread.dylib       	0x00000001f30d8f50 start_wqthread + 8

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