log: 
13:44:26.698
Starting!
13:44:26.704
Nothing to download!
13:44:26.719
Downloading Java Runtime java-runtime-alpha:16.0.1.9.1
13:44:27.459
Extracting 8 files!
13:44:28.874
Using default game log configuration client-1.12.xml (outputs XML)
13:46:21.395
Loading tweak class name optifine.OptiFineTweaker
13:46:21.439
Using primary tweak class name optifine.OptiFineTweaker
13:46:21.439
Calling tweak class optifine.OptiFineTweaker
13:46:21.969
Launching wrapped minecraft {net.minecraft.client.main.Main}
13:46:54.824
[OptiFine] (Reflector) Field not found: World.tileEntitiesToBeRemoved
13:46:55.059
[OptiFine] (Reflector) Class not present: net.minecraftforge.eventbus.api.Event$Result
13:46:55.060
[OptiFine] (Reflector) Method not present: net.minecraftforge.common.extensions.IForgeBlockState.hasTileEntity
13:46:55.061
[OptiFine] (Reflector) Class not present: net.minecraftforge.common.extensions.IForgeEntity
13:46:55.095
[OptiFine] (Reflector) Class not present: net.minecraftforge.fml.CrashReportExtender
13:46:56.248
[OptiFine] (Reflector) Method not present: afv.createOptional
13:47:03.090
[OptiFine] (Reflector) Class not present: net.minecraftforge.client.ForgeHooksClient
13:47:19.639
 
13:47:19.639
Process crashed with exit code -1073741819