(2.6.3) Crash in MixpanelInstance.swift line 1670 (closure #1 in closure #1 in MixpanelInstance.checkDecide(forceFetch:completion:))

[mman]

In production, random, indicated by firebase as a stack corruption:

Crashed: com.mixpanel.11ff2efb4b52912007de15fb93f0924f
0  libobjc.A.dylib                0x1ed33bbf0 objc_retain + 16
1  libswiftCore.dylib             0x21bd112dc swift_bridgeObjectRetain + 44
2  Mixpanel                       0x1011f7f3c closure #1 in closure #1 in MixpanelInstance.checkDecide(forceFetch:completion:) + 1670 (MixpanelInstance.swift:1670)
3  Mixpanel                       0x1011e5924 thunk for @escaping @callee_guaranteed () -> () (<compiler-generated>)
4  libdispatch.dylib              0x1edb88a38 _dispatch_call_block_and_release + 24
5  libdispatch.dylib              0x1edb897d4 _dispatch_client_callout + 16
6  libdispatch.dylib              0x1edb32320 _dispatch_lane_serial_drain$VARIANT$mp + 592
7  libdispatch.dylib              0x1edb32e3c _dispatch_lane_invoke$VARIANT$mp + 428
8  libdispatch.dylib              0x1edb3b4a8 _dispatch_workloop_worker_thread + 596
9  libsystem_pthread.dylib        0x1edd69114 _pthread_wqthread + 304
10 libsystem_pthread.dylib        0x1edd6bcd4 start_wqthread + 4

[mman]

Happens about a seconds into the app start, here are the last entries:

2019-06-28 08:23:28:374 [inactive:main] application(willFinishLaunchingWithOptions:)
2019-06-28 08:23:28:956 [inactive:main] application(didFinishLaunchingWithOptions:)
2019-06-28 08:23:29:427 [active:main] crash

[zihejia]

Hi @mman, thanks for bringing this up, we have released a new version contains a fix for it. https://github.com/mixpanel/mixpanel-swift/releases/tag/v2.6.4. I'm closing this one now, please feel free to open it if the problem still exists.