Steps to reproduce:
1. Open attached project
2. Open Scene Scenes/testLevel
3. Enter Play mode/exit Play mode

Expected result: no crash
Actual result: the project will either crash upon loading, entering/exiting play mode, closing Unity with the project open or in some other situation

Reproducible with: 2017.2.0b1, 2017.3.0p3, 2017.2.0f3, 2018.1.0b2
Not reproducible with: 2018.1.0b3, 2018.1.0b6

Note: the problem seems to have gone away around 2018.1.0b3
Note2: the stack trace is different when Unity crashes upon closing (text file attached)

Stack trace:

0x000000014092E89F (Unity) SerializeTraits<dynamic_array<PPtr<AnimationClip>,4> >::Transfer<RemapPPtrTransfer>
0x0000000141ACC67C (Unity) SerializeTraits<std::map<math::int3_storage,TileAnimationData,TilemapPosition_Less,stl_allocator<std::pair<math::int3_storage const ,TileAnimationData>,95,16> > >::Transfer<RemapPPtrTransfer>
0x0000000141AD0D1C (Unity) Tilemap::Transfer<RemapPPtrTransfer>
0x00000001405CF88A (Unity) MarkDependencies
0x00000001405CF92D (Unity) MarkAllDependencies
0x00000001405D23B5 (Unity) GarbageCollectSharedAssets
0x00000001406B5565 (Unity) UnloadUnusedAssetsOperation::IntegrateMainThread
0x00000001406B9AF8 (Unity) PreloadManager::UpdatePreloadingSingleStep
0x00000001406B9C98 (Unity) PreloadManager::WaitForAllAsyncOperationsToComplete
0x0000000140B811C2 (Unity) EditorSceneManager::RestoreSceneBackups
0x0000000140B88F96 (Unity) EditorSceneManager::RestoreSceneManagerSetup
0x0000000140B893DA (Unity) EditorSceneManager::LoadSceneManagerSetup
0x00000001410B81C2 (Unity) RestoreLastOpenedScenes
0x00000001410C2B7B (Unity) Application::FinishLoadingProject
0x00000001412CDAEB (Unity) WinMain
0x0000000141DE45A8 (Unity) __tmainCRTStartup
0x00007FFFA5C81FE4 (KERNEL32) BaseThreadInitThunk
0x00007FFFA79AEF91 (ntdll) RtlUserThreadStart