Store yet more details (failure time and exceptions) on upstream submission failures
Store yet more details (failure time and exceptions) on upstream submission failures

uingei/eloipool,ahmedbodi/SHA-Eloipool-MMCFE-,cinnamoncoin/eloipool-1,thrasher-/eloipool,jameshilliard/4tar-eloipool,uingei/eloi,imsaguy/eloipool,svasva/eloipool,thrasher-/eloipool,wizkid057/eloipool,pointgaming/point-gaming-btc,thrasher-/eloipool