Steps to reproduce:
1. Open the attached project ("1205313.zip")
2. Open "Lights and Shadows" Scene
3. Select "Point Light", "Spot Light" and "Area Light"
4. Move the lights around the Scene continually interrupting baking

Reproducible with: 2019.3.0a1, 2019.3.0f4, 2020.1.0a1, 2020.1.0a18
Not reproducible with: 2018.4.15f1, 2019.2.17f1

First 5 lines of the stacktrace:
0x00007FF729793E4C (Unity) SpookyHash::Short
0x00007FF72A242164 (Unity) LightFalloffRefcountedDataHandle<UnityInputLightFalloffTable>::GetHash
0x00007FF72A08BF4A (Unity) SortedHashArray<LightFalloffRefcountedDataHandle<UnityInputLightFalloffTable>,DefaultHashFunctor<LightFalloffRefcountedDataHandle<UnityInputLightFalloffTable> > >::find
0x00007FF72A081A38 (Unity) EnlightenRuntimeManager::GetLightFalloffTable
0x00007FF72B9F5333 (Unity) ConvertToBakedLight
0x00007FF72B9F7F33 (Unity) CreateEnlightenBakeInputLightingJob::Execute

Notes:
- Usually crashes without a stacktrace on Windows
- Produces a full stacktrace on Mac
- Seems to only repro with URP/LWRP/HDRP set as the SRP of the Project
- Continually interrupting auto-generating light means changing the position of the lights while the light is still baking

Related to https://fogbugz.unity3d.com/f/cases/1197692/, but most likely not a duplicate.