I'm not using anything related to the latest Beta, I've installed them in the past weeks but had to remove everything from my current machine. I just double checked everything:
Xcode 10.2.1 (10E1001)
both Swift 4.2 and Swift 5
I looked into the DiagnosticReports
folder and I found the following log with the correct timing of my last try, I'm not able to read it though.
Process: lldb-rpc-server [7305]
Path: /Applications/Xcode.app/Contents/SharedFrameworks/LLDBRPC.framework/Versions/A/Resources/lldb-rpc-server
Identifier: lldb-rpc-server
Version: 2
Code Type: X86-64 (Native)
Parent Process: Xcode [7279]
Responsible: lldb-rpc-server [7305]
User ID: 502
Date/Time: 2019-07-01 14:04:47.674 +0200
OS Version: Mac OS X 10.14.5 (18F132)
Report Version: 12
Bridge OS Version: 3.5 (16P5125)
Anonymous UUID: EE5EBBB8-BD54-DF23-19B2-269F1C9CFF77
Time Awake Since Boot: 20000 seconds
System Integrity Protection: disabled
Crashed Thread: 7 <lldb.process.internal-state(pid=7421)>
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 [7305]
VM Regions Near 0:
-->
__TEXT 000000010499d000-0000000104a1f000 [ 520K] r-x/rwx SM=COW /Applications/Xcode.app/Contents/SharedFrameworks/LLDBRPC.framework/Versions/A/Resources/lldb-rpc-server
Thread 0:: Connection::RunLoop() packet reading thread Dispatch queue: com.apple.main-thread
0 libsystem_kernel.dylib 0x00007fff71c2cef2 read + 10
1 lldb-rpc-server 0x00000001049a74b1 rpc_common::RPCConnectionSocket::Read(std::__1::basic_string<unsigned char, std::__1::char_traits<unsigned char>, std::__1::allocator<unsigned char> >&, bool) + 173
2 lldb-rpc-server 0x00000001049adfba rpc_common::Connection::ReceivePacket(rpc_common::RPCPacket&) + 148
3 lldb-rpc-server 0x00000001049adae7 rpc_common::Connection::RunLoop() + 203
4 lldb-rpc-server 0x00000001049ea3f7 main + 471
5 libdyld.dylib 0x00007fff71af63d5 start + 1
Thread 1:
0 libsystem_pthread.dylib 0x00007fff71ce93f0 start_wqthread + 0
Thread 2:
0 libsystem_kernel.dylib 0x00007fff71c2b22a mach_msg_trap + 10
1 libsystem_kernel.dylib 0x00007fff71c2b76c mach_msg + 60
2 com.apple.CoreFoundation 0x00007fff45bc2bee __CFRunLoopServiceMachPort + 328
3 com.apple.CoreFoundation 0x00007fff45bc215c __CFRunLoopRun + 1612
4 com.apple.CoreFoundation 0x00007fff45bc18be CFRunLoopRunSpecific + 455
5 com.apple.CoreFoundation 0x00007fff45bc16d2 CFRunLoopRun + 40
6 com.apple.DebugSymbols 0x00007fff5a83bd2b SpotlightQueryThread(void*) + 475
7 libsystem_pthread.dylib 0x00007fff71cea2eb _pthread_body + 126
8 libsystem_pthread.dylib 0x00007fff71ced249 _pthread_start + 66
9 libsystem_pthread.dylib 0x00007fff71ce940d thread_start + 13
Thread 3:: RPC packet thread for client tid 000512c4 (332484)
0 libsystem_kernel.dylib 0x00007fff71c2e86a __psynch_cvwait + 10
1 libsystem_pthread.dylib 0x00007fff71ced56e _pthread_cond_wait + 722
2 libc++.1.dylib 0x00007fff6ed28a0a std::__1::condition_variable::wait(std::__1::unique_lock<std::__1::mutex>&) + 18
3 lldb-rpc-server 0x00000001049b1102 Packets::ReadThread() + 222
4 lldb-rpc-server 0x00000001049b101f Packets::RunReadThread(void*) + 9
5 libsystem_pthread.dylib 0x00007fff71cea2eb _pthread_body + 126
6 libsystem_pthread.dylib 0x00007fff71ced249 _pthread_start + 66
7 libsystem_pthread.dylib 0x00007fff71ce940d thread_start + 13
Thread 4:: RPC packet thread for client tid 00051049 (331849)
0 libsystem_kernel.dylib 0x00007fff71c2e86a __psynch_cvwait + 10
1 libsystem_pthread.dylib 0x00007fff71ced56e _pthread_cond_wait + 722
2 libc++.1.dylib 0x00007fff6ed28a0a std::__1::condition_variable::wait(std::__1::unique_lock<std::__1::mutex>&) + 18
3 lldb-rpc-server 0x00000001049b1102 Packets::ReadThread() + 222
4 lldb-rpc-server 0x00000001049b101f Packets::RunReadThread(void*) + 9
5 libsystem_pthread.dylib 0x00007fff71cea2eb _pthread_body + 126
6 libsystem_pthread.dylib 0x00007fff71ced249 _pthread_start + 66
7 libsystem_pthread.dylib 0x00007fff71ce940d thread_start + 13
Thread 5:: RPC packet thread for client tid 000512c3 (332483)
0 libsystem_kernel.dylib 0x00007fff71c2e86a __psynch_cvwait + 10
1 libsystem_pthread.dylib 0x00007fff71ced56e _pthread_cond_wait + 722
2 libc++.1.dylib 0x00007fff6ed28a0a std::__1::condition_variable::wait(std::__1::unique_lock<std::__1::mutex>&) + 18
3 lldb-rpc-server 0x00000001049b1102 Packets::ReadThread() + 222
4 lldb-rpc-server 0x00000001049b101f Packets::RunReadThread(void*) + 9
5 libsystem_pthread.dylib 0x00007fff71cea2eb _pthread_body + 126
6 libsystem_pthread.dylib 0x00007fff71ced249 _pthread_start + 66
7 libsystem_pthread.dylib 0x00007fff71ce940d thread_start + 13
Thread 6:: <lldb.process.gdb-remote.async>
0 libsystem_kernel.dylib 0x00007fff71c2e86a __psynch_cvwait + 10
1 libsystem_pthread.dylib 0x00007fff71ced56e _pthread_cond_wait + 722
2 libc++.1.dylib 0x00007fff6ed28a0a std::__1::condition_variable::wait(std::__1::unique_lock<std::__1::mutex>&) + 18
3 com.apple.LLDB.framework 0x000000010c0401ab lldb_private::Listener::GetEventInternal(lldb_private::Timeout<std::__1::ratio<1l, 1000000l> > const&, lldb_private::Broadcaster*, lldb_private::ConstString const*, unsigned int, unsigned int, std::__1::shared_ptr<lldb_private::Event>&) + 235
4 com.apple.LLDB.framework 0x000000010c0404c3 lldb_private::Listener::GetEvent(std::__1::shared_ptr<lldb_private::Event>&, lldb_private::Timeout<std::__1::ratio<1l, 1000000l> > const&) + 33
5 com.apple.LLDB.framework 0x000000010c1bcd46 lldb_private::process_gdb_remote::ProcessGDBRemote::AsyncThread(void*) + 262
6 com.apple.LLDB.framework 0x000000010c26f93b lldb_private::HostNativeThreadBase::ThreadCreateTrampoline(void*) + 105
7 libsystem_pthread.dylib 0x00007fff71cea2eb _pthread_body + 126
8 libsystem_pthread.dylib 0x00007fff71ced249 _pthread_start + 66
9 libsystem_pthread.dylib 0x00007fff71ce940d thread_start + 13
Thread 7 Crashed:: <lldb.process.internal-state(pid=7421)>
0 com.apple.LLDB.framework 0x000000010c2e5e13 lldb_private::ThreadList::WillResume() + 177
1 com.apple.LLDB.framework 0x000000010c2963be lldb_private::Process::PrivateResume() + 252
2 com.apple.LLDB.framework 0x000000010c29c91f lldb_private::Process::ShouldBroadcastEvent(lldb_private::Event*) + 849
3 com.apple.LLDB.framework 0x000000010c2992d0 lldb_private::Process::HandlePrivateEvent(std::__1::shared_ptr<lldb_private::Event>&) + 210
4 com.apple.LLDB.framework 0x000000010c29d209 lldb_private::Process::RunPrivateStateThread(bool) + 865
5 com.apple.LLDB.framework 0x000000010c29c9b2 lldb_private::Process::PrivateStateThread(void*) + 22
6 com.apple.LLDB.framework 0x000000010c26f93b lldb_private::HostNativeThreadBase::ThreadCreateTrampoline(void*) + 105
7 libsystem_pthread.dylib 0x00007fff71cea2eb _pthread_body + 126
8 libsystem_pthread.dylib 0x00007fff71ced249 _pthread_start + 66
9 libsystem_pthread.dylib 0x00007fff71ce940d thread_start + 13
Thread 8:: RPC packet thread for client tid 00051b0e (334606)
0 libsystem_kernel.dylib 0x00007fff71c3261a __select + 10
1 com.apple.LLDB.framework 0x000000010c47a47b SelectHelper::Select() + 895
2 com.apple.LLDB.framework 0x000000010bfa8685 lldb_private::ConnectionFileDescriptor::BytesAvailable(lldb_private::Timeout<std::__1::ratio<1l, 1000000l> > const&, lldb_private::Status*) + 253
3 com.apple.LLDB.framework 0x000000010bfa8284 lldb_private::ConnectionFileDescriptor::Read(void*, unsigned long, lldb_private::Timeout<std::__1::ratio<1l, 1000000l> > const&, lldb::ConnectionStatus&, lldb_private::Status*) + 112
4 com.apple.LLDB.framework 0x000000010c02972b lldb_private::Communication::ReadFromConnection(void*, unsigned long, lldb_private::Timeout<std::__1::ratio<1l, 1000000l> > const&, lldb::ConnectionStatus&, lldb_private::Status*) + 45
5 com.apple.LLDB.framework 0x000000010c0292d8 lldb_private::Communication::Read(void*, unsigned long, lldb_private::Timeout<std::__1::ratio<1l, 1000000l> > const&, lldb::ConnectionStatus&, lldb_private::Status*) + 174
6 com.apple.LLDB.framework 0x000000010c1a748f lldb_private::process_gdb_remote::GDBRemoteCommunication::WaitForPacketNoLock(StringExtractorGDBRemote&, lldb_private::Timeout<std::__1::ratio<1l, 1000000l> >, bool) + 273
7 com.apple.LLDB.framework 0x000000010c37308c lldb_private::process_gdb_remote::GDBRemoteClientBase::SendPacketAndWaitForResponseNoLock(llvm::StringRef, StringExtractorGDBRemote&) + 106
8 com.apple.LLDB.framework 0x000000010c372f9c lldb_private::process_gdb_remote::GDBRemoteClientBase::SendPacketAndWaitForResponse(llvm::StringRef, StringExtractorGDBRemote&, bool) + 76
9 com.apple.LLDB.framework 0x000000010c1b9b12 lldb_private::process_gdb_remote::ProcessGDBRemote::DoDestroy() + 598
10 com.apple.LLDB.framework 0x000000010c292eba lldb_private::Process::Destroy(bool) + 238
11 com.apple.LLDB.framework 0x0000000108e9a3c9 lldb::SBProcess::Kill() + 101
12 lldb-rpc-server 0x00000001049a0e45 rpc_server::_ZN4lldb9SBProcess4KillEv::HandleRPCCall(rpc_common::Connection&, rpc_common::RPCStream&, rpc_common::RPCStream&) + 47
13 lldb-rpc-server 0x00000001049accd3 rpc_common::Connection::PrivateHandleRPCPacket(rpc_common::RPCPacket&, rpc_common::RPCPacket&, bool&) + 469
14 lldb-rpc-server 0x00000001049ad9d4 rpc_common::Connection::HandleRPCPacket(rpc_common::RPCPacket&) + 62
15 lldb-rpc-server 0x00000001049b12ba Packets::ProcessPackets() + 254
16 lldb-rpc-server 0x00000001049b10e2 Packets::ReadThread() + 190
17 lldb-rpc-server 0x00000001049b101f Packets::RunReadThread(void*) + 9
18 libsystem_pthread.dylib 0x00007fff71cea2eb _pthread_body + 126
19 libsystem_pthread.dylib 0x00007fff71ced249 _pthread_start + 66
20 libsystem_pthread.dylib 0x00007fff71ce940d thread_start + 13
Thread 9:: RPC packet thread for client tid 00051ae5 (334565)
0 libsystem_kernel.dylib 0x00007fff71c2e86a __psynch_cvwait + 10
1 libsystem_pthread.dylib 0x00007fff71ced56e _pthread_cond_wait + 722
2 libc++.1.dylib 0x00007fff6ed28a0a std::__1::condition_variable::wait(std::__1::unique_lock<std::__1::mutex>&) + 18
3 lldb-rpc-server 0x00000001049b1102 Packets::ReadThread() + 222
4 lldb-rpc-server 0x00000001049b101f Packets::RunReadThread(void*) + 9
5 libsystem_pthread.dylib 0x00007fff71cea2eb _pthread_body + 126
6 libsystem_pthread.dylib 0x00007fff71ced249 _pthread_start + 66
7 libsystem_pthread.dylib 0x00007fff71ce940d thread_start + 13
Thread 7 crashed with X86 Thread State (64-bit):
rax: 0x0000000000000000 rbx: 0x000000010c7e240a rcx: 0x00007fff71c2ef4a rdx: 0x0000000000000000
rdi: 0x00007f7f2f0f4180 rsi: 0x000000010c7b13b9 rbp: 0x0000700005b65ca0 rsp: 0x0000700005b65b90
r8: 0x0000700005b65708 r9: 0x0000000000000000 r10: 0x00007fff71c2ef4a r11: 0x0000000000000296
r12: 0x00007f7f2f7274c0 r13: 0x000000010c7e2582 r14: 0x000000010c7e253c r15: 0x00007f7f2f727460
rip: 0x000000010c2e5e13 rfl: 0x0000000000010246 cr2: 0x0000000108cb9000
Logical CPU: 0
Error Code: 0x0200005d
Trap Number: 133
...