I searched high and low but couldn't find any topic related to this, so I apologize if this is all old news.
Miner cancels task: resting injury. <--- Has this happened to you a suspicious number of times?
Apparently, warpstone is bad. Seriously, do NOT mine it!
Warpstone, when mined, inflicts a syndrome on the miner. This syndrome can vary depending on the type of warpstone.
Weak Warpstone - Cough blood, generally more annoying than harmful. CAN STACK!
Unstable Warpstone - High chance of contracting "Stone Sickness" which causes the miner's heart, spine, brain, and lungs to ROT... yet they won't die(?)
Warpstone Clusters - Untested. Assume the worst.
Literally any other type of warpstone not listed here - Time for !!SCIENCE!!, right?
Known(?) possible effects of mining warpstone:
1. Cough up blood.
2. Causes instantaneous drowsiness and nausea.
3. Causes instantaneous very drowsiness and very nauseas.
5. Causes instantaneous very hungry and very thirstiness.
4. INSTANTANIOUS necrosis rot of spine, brain, heart, and lungs. (This is a syndrome called Stone Sickness. Contagiousness unknown).
5. Transformation into a lich for whatever random reason. Seriously, why though?
7. Potential death by asphyxiation.
8. Causes unconsciousness.
9. Instant death (Heavy testing required. Have fun with that...)
10. Inflicts a potentially contagious dust-like syndrome on the miner. Prepare for quarantine.