Producers paying buyers to take oil off of their hands.

The price for delivery in May of West Texas Intermediate (WTI) crude oil fell below $0 today (WSJ, April 2020). The negative price means that the producer pays the "buyer" money now when the buyer agrees to take delivery of oil in May. So many questions arise!

1. Why would a producer pay someone now to take delivery of oil in the future? 
2. Why are buyers paying the producers money now to take delivery in November instead of getting paid now to take delivery in May?