The discount retailer's fiscal second-quarter report included a lot of disappointing news for investors.Dollar Tree (DLTR -24.29%) stock is getting crushed in Wednesday's trading. The discount retailer's share price was down 24% as of 2:02 p.m. ET, according to data from S&P Global Market Intelligence.Before the market opened Wednesday morning, Dollar Tree published results for its fiscal second quarter, which ended Aug. 3. Sales and earnings fell short of analysts' consensus expectations, and management cu ...